1226 lines
34 KiB
JavaScript
1226 lines
34 KiB
JavaScript
const { invoke } = window.__TAURI__.core;
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import * as fitCurve from '/fit-curve.js';
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import { Bezier } from "/bezier.js";
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let simplifyPolyline = simplify
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let greetInputEl;
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let greetMsgEl;
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let rootPane;
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let canvases = [];
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let mode = "draw"
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let minSegmentSize = 5;
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let maxSmoothAngle = 0.6;
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let undoStack = [];
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let redoStack = [];
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let tools = {
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select: {
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icon: "/assets/select.svg",
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properties: {}
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},
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transform: {
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icon: "/assets/transform.svg",
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properties: {}
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},
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draw: {
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icon: "/assets/draw.svg",
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properties: {
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"lineWidth": {
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type: "number",
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label: "Line Width"
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},
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"simplifyMode": {
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type: "enum",
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options: ["corners", "smooth"], // "auto"],
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label: "Line Mode"
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},
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"fillShape": {
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type: "boolean",
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label: "Fill Shape"
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}
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}
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},
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rectangle: {
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icon: "/assets/rectangle.svg",
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properties: {}
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},
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ellipse: {
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icon: "assets/ellipse.svg",
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properties: {}
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},
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paint_bucket: {
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icon: "/assets/paint_bucket.svg",
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properties: {}
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}
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}
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let mouseEvent;
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let context = {
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mouseDown: false,
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swatches: [
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"#000000",
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"#FFFFFF",
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"#FF0000",
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"#FFFF00",
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"#00FF00",
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"#00FFFF",
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"#0000FF",
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"#FF00FF",
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],
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lineWidth: 5,
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simplifyMode: "smooth",
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fillShape: true,
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dragging: false,
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selectionRect: undefined,
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selection: [],
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}
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let config = {
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shortcuts: {
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playAnimation: " ",
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// undo: "<ctrl>+z"
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undo: "z",
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redo: "Z",
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}
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}
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// Pointers to all objects
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let pointerList = {}
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let actions = {
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addShape: {
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create: (parent, shape) => {
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redoStack.length = 0; // Clear redo stack
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let serializableCurves = []
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for (let curve of shape.curves) {
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serializableCurves.push({ points: curve.points })
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}
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let action = {
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parent: parent.idx,
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curves: serializableCurves,
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startx: shape.startx,
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starty: shape.starty,
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uuid: uuidv4()
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}
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undoStack.push({name: "addShape", action: action})
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actions.addShape.execute(action)
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},
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execute: (action) => {
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let object = pointerList[action.parent]
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let curvesList = action.curves
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let shape = new Shape(action.startx, action.starty, context, action.uuid)
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for (let curve of curvesList) {
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shape.addCurve(
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new Bezier(
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curve.points[0].x, curve.points[0].y,
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curve.points[1].x, curve.points[1].y,
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curve.points[2].x, curve.points[2].y,
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curve.points[3].x, curve.points[3].y
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))
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}
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object.addShape(shape)
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},
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rollback: (action) => {
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let object = pointerList[action.parent]
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let shape = pointerList[action.uuid]
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object.removeShape(shape)
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delete pointerList[action.uuid]
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}
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},
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editShape: {
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create: (shape, newCurves) => {
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let serializableNewCurves = []
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for (let curve of newCurves) {
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serializableNewCurves.push({ points: curve.points })
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}
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let serializableOldCurves = []
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for (let curve of shape.curves) {
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serializableOldCurves.push({ points: curve.points })
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}
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let action = {
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shape: shape.idx,
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oldCurves: serializableOldCurves,
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newCurves: serializableNewCurves
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}
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undoStack.push({name: "editShape", action: action})
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actions.editShape.execute(action)
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},
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execute: (action) => {
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let shape = pointerList[action.shape]
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let curvesList = action.newCurves
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shape.curves = []
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for (let curve of curvesList) {
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shape.addCurve(
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new Bezier(
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curve.points[0].x, curve.points[0].y,
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curve.points[1].x, curve.points[1].y,
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curve.points[2].x, curve.points[2].y,
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curve.points[3].x, curve.points[3].y
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))
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}
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},
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rollback: (action) => {
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let shape = pointerList[action.shape]
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let curvesList = action.oldCurves
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shape.curves = []
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for (let curve of curvesList) {
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shape.addCurve(
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new Bezier(
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curve.points[0].x, curve.points[0].y,
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curve.points[1].x, curve.points[1].y,
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curve.points[2].x, curve.points[2].y,
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curve.points[3].x, curve.points[3].y
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))
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}}
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},
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addObject: {
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create: () => {},
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execute: (action) => {
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},
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rollback: (action) => {}
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},
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editObject: {
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create: () => {},
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execute: (action) => {
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},
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rollback: (action) => {}
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},
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}
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function uuidv4() {
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return "10000000-1000-4000-8000-100000000000".replace(/[018]/g, c =>
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(+c ^ crypto.getRandomValues(new Uint8Array(1))[0] & 15 >> +c / 4).toString(16)
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);
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}
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function vectorDist(a, b) {
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return Math.sqrt((a.x-b.x)*(a.x-b.x) + (a.y-b.y)*(a.y-b.y))
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}
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function getMousePos(canvas, evt) {
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var rect = canvas.getBoundingClientRect();
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return {
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x: evt.clientX - rect.left,
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y: evt.clientY - rect.top
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};
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}
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function getProperty(context, path) {
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let pointer = context;
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let pathComponents = path.split('.')
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for (let component of pathComponents) {
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pointer = pointer[component]
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}
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return pointer
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}
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function setProperty(context, path, value) {
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let pointer = context;
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let pathComponents = path.split('.')
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let finalComponent = pathComponents.pop()
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for (let component of pathComponents) {
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pointer = pointer[component]
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}
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pointer[finalComponent] = value
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}
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function selectCurve(context, mouse) {
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let mouseTolerance = 15;
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for (let shape of context.activeObject.currentFrame.shapes) {
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if (mouse.x > shape.boundingBox.x.min - mouseTolerance &&
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mouse.x < shape.boundingBox.x.max + mouseTolerance &&
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mouse.y > shape.boundingBox.y.min - mouseTolerance &&
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mouse.y < shape.boundingBox.y.max + mouseTolerance) {
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let closestDist = mouseTolerance;
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let closest = undefined
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for (let curve of shape.curves) {
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let dist = vectorDist(mouse, curve.project(mouse))
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if (dist <= closestDist ) {
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closestDist = dist
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closest = curve
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}
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}
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if (closest) {
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return {curve:closest, shape:shape}
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} else {
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return undefined
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}
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}
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}
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}
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function moldCurve(curve, mouse, oldmouse) {
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let diff = {x: mouse.x - oldmouse.x, y: mouse.y - oldmouse.y}
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let p = curve.project(mouse)
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let min_influence = 0.1
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console.log(p.t)
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const CP1 = {
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x: curve.points[1].x + diff.x*(1-p.t)*2,
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y: curve.points[1].y + diff.y*(1-p.t)*2
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}
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const CP2 = {
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x: curve.points[2].x + diff.x*(p.t)*2,
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y: curve.points[2].y + diff.y*(p.t)*2
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}
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return new Bezier(curve.points[0], CP1, CP2, curve.points[3])
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// return curve
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}
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function moldCurveMath(curve, mouse) {
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let interpolated = true
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let p = curve.project({x: mouse.x, y: mouse.y})
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let t1 = p.t;
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let struts = curve.getStrutPoints(t1);
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let m = {
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t: p.t,
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B: p,
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e1: struts[7],
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e2: struts[8]
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};
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m.d1 = { x: m.e1.x - m.B.x, y: m.e1.y - m.B.y};
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m.d2 = { x: m.e2.x - m.B.x, y: m.e2.y - m.B.y};
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const S = curve.points[0],
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E = curve.points[curve.order],
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{B, t, e1, e2} = m,
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org = curve.getABC(t, B),
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nB = mouse,
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d1 = { x: e1.x - B.x, y: e1.y - B.y },
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d2 = { x: e2.x - B.x, y: e2.y - B.y },
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ne1 = { x: nB.x + d1.x, y: nB.y + d1.y },
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ne2 = { x: nB.x + d2.x, y: nB.y + d2.y },
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{A, C} = curve.getABC(t, nB),
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// The cubic case requires us to derive two control points,
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// which we'll do in a separate function to keep the code
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// at least somewhat manageable.
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{v1, v2, C1, C2} = deriveControlPoints(S, A, E, ne1, ne2, t);
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// if (interpolated) {
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// For the last example, we need to show what the "ideal" curve
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// looks like, in addition to the one we actually get when we
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// rely on the B we picked with the `t` value and e1/e2 points
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// that point B had...
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const ideal = getIdealisedCurve(S, nB, E);
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let idealCurve = new Bezier(ideal.S, ideal.C1, ideal.C2, ideal.E);
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// }
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let molded = new Bezier(S,C1,C2,E);
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let falloff = 100
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let d = Bezier.getUtils().dist(ideal.B, p);
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let t2 = Math.min(falloff, d) / falloff;
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console.log(d)
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let iC1 = {
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x: (1-t2) * molded.points[1].x + t2 * idealCurve.points[1].x,
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y: (1-t2) * molded.points[1].y + t2 * idealCurve.points[1].y
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};
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let iC2 = {
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x: (1-t2) * molded.points[2].x + t2 * idealCurve.points[2].x,
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y: (1-t2) * molded.points[2].y + t2 * idealCurve.points[2].y
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};
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let interpolatedCurve = new Bezier(molded.points[0], iC1, iC2, molded.points[3]);
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return interpolatedCurve
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// return idealCurve
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}
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function deriveControlPoints(S, A, E, e1, e2, t) {
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// Deriving the control points is effectively "doing what
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// we talk about in the section", in code:
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const v1 = {
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x: A.x - (A.x - e1.x)/(1-t),
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y: A.y - (A.y - e1.y)/(1-t)
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};
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const v2 = {
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x: A.x - (A.x - e2.x)/t,
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y: A.y - (A.y - e2.y)/t
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};
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const C1 = {
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x: S.x + (v1.x - S.x) / t,
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y: S.y + (v1.y - S.y) / t
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};
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const C2 = {
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x: E.x + (v2.x - E.x) / (1-t),
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y: E.y + (v2.y - E.y) / (1-t)
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};
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return {v1, v2, C1, C2};
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}
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function getIdealisedCurve(p1, p2, p3) {
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// This "reruns" the curve composition, but with a `t` value
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// that is unrelated to the actual point B we picked, instead
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// using whatever the appropriate `t` value would be if we were
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// trying to fit a circular arc, as per earlier in the section.
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const utils = Bezier.getUtils()
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const c = utils.getccenter(p1, p2, p3),
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d1 = utils.dist(p1, p2),
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d2 = utils.dist(p3, p2),
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t = d1 / (d1 + d2),
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{ A, B, C, S, E } = Bezier.getABC(3, p1, p2, p3, t),
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angle = (Math.atan2(E.y-S.y, E.x-S.x) - Math.atan2(B.y-S.y, B.x-S.x) + utils.TAU) % utils.TAU,
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bc = (angle < 0 || angle > utils.PI ? -1 : 1) * utils.dist(S, E)/3,
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de1 = t * bc,
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de2 = (1-t) * bc,
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tangent = [
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{ x: B.x - 10 * (B.y-c.y), y: B.y + 10 * (B.x-c.x) },
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{ x: B.x + 10 * (B.y-c.y), y: B.y - 10 * (B.x-c.x) }
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],
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tlength = utils.dist(tangent[0], tangent[1]),
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dx = (tangent[1].x - tangent[0].x)/tlength,
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dy = (tangent[1].y - tangent[0].y)/tlength,
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e1 = { x: B.x + de1 * dx, y: B.y + de1 * dy},
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e2 = { x: B.x - de2 * dx, y: B.y - de2 * dy },
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{v1, v2, C1, C2} = deriveControlPoints(S, A, E, e1, e2, t);
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return {A,B,C,S,E,e1,e2,v1,v2,C1,C2};
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}
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function growBoundingBox(bboxa, bboxb) {
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bboxa.x.min = Math.min(bboxa.x.min, bboxb.x.min)
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bboxa.y.min = Math.min(bboxa.y.min, bboxb.y.min)
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bboxa.x.max = Math.max(bboxa.x.max, bboxb.x.max)
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bboxa.y.max = Math.max(bboxa.y.max, bboxb.y.max)
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}
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function regionToBbox(region) {
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return {
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x: {min: Math.min(region.x1, region.x2), max: Math.max(region.x1, region.x2)},
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y: {min: Math.min(region.y1, region.y2), max: Math.max(region.y1, region.y2)}
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}
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}
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function hitTest(candidate, object) {
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let bbox = object.bbox()
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if (candidate.x.min) {
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// We're checking a bounding box
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if (candidate.x.min < bbox.x.max + object.x && candidate.x.max > bbox.x.min + object.x &&
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candidate.y.min < bbox.y.max + object.y && candidate.y.max > bbox.y.min + object.y) {
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return true;
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} else {
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return false;
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}
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} else {
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// We're checking a point
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if (candidate.x > bbox.x.min + object.x &&
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candidate.x < bbox.x.max + object.x &&
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candidate.y > bbox.y.min + object.y &&
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candidate.y < bbox.y.max + object.y) {
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return true;
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} else {
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return false
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}
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}
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}
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function pushState() {
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// console.log(context)
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// let ctx = context.ctx
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// context.ctx = undefined
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// undoStack.push(window.structuredClone([root,context]))
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// context.ctx = ctx
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}
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function undo() {
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let action = undoStack.pop()
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if (action) {
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actions[action.name].rollback(action.action)
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redoStack.push(action)
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updateUI()
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} else {
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console.log("No actions to undo")
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}
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}
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function redo() {
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let action = redoStack.pop()
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if (action) {
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actions[action.name].execute(action.action)
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undoStack.push(action)
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updateUI()
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} else {
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console.log("No actions to redo")
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}
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}
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class Curve {
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constructor(startx, starty, cp1x, cp1y, cp2x, cp2y, x, y) {
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this.startx = startx
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this.starty = starty
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this.cp1x = cp1x;
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this.cp1y = cp1y;
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this.cp2x = cp2x;
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this.cp2y = cp2y;
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this.x = x;
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this.y = y;
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}
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}
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class Frame {
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constructor(uuid) {
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this.keys = {}
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this.shapes = []
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if (!uuid) {
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this.idx = uuidv4()
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} else {
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this.idx = uuid
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}
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pointerList[this.idx] = this
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}
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}
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class Layer {
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constructor(uuid) {
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this.frames = [new Frame()]
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this.children = []
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if (!uuid) {
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this.idx = uuidv4()
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} else {
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this.idx = uuid
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}
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pointerList[this.idx] = this
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}
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}
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class Shape {
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constructor(startx, starty, context, uuid=undefined) {
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this.startx = startx;
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this.starty = starty;
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this.curves = [];
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this.fillStyle = context.fillStyle;
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this.fillImage = context.fillImage;
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this.strokeStyle = context.strokeStyle;
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this.lineWidth = context.lineWidth
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this.filled = context.fillShape;
|
|
this.stroked = context.strokeShape || true;
|
|
this.boundingBox = {
|
|
x: {min: startx, max: starty},
|
|
y: {min: starty, max: starty}
|
|
}
|
|
if (!uuid) {
|
|
this.idx = uuidv4()
|
|
} else {
|
|
this.idx = uuid
|
|
}
|
|
pointerList[this.idx] = this
|
|
}
|
|
addCurve(curve) {
|
|
this.curves.push(curve)
|
|
growBoundingBox(this.boundingBox, curve.bbox())
|
|
}
|
|
addLine(x, y) {
|
|
let lastpoint;
|
|
if (this.curves.length) {
|
|
lastpoint = this.curves[this.curves.length - 1].points[3]
|
|
} else {
|
|
lastpoint = {x: this.startx, y: this.starty}
|
|
}
|
|
let midpoint = {x: (x + lastpoint.x) / 2, y: (y + lastpoint.y) / 2}
|
|
let curve = new Bezier(lastpoint.x, lastpoint.y,
|
|
midpoint.x, midpoint.y,
|
|
midpoint.x, midpoint.y,
|
|
x, y)
|
|
this.curves.push(curve)
|
|
}
|
|
clear() {
|
|
this.curves = []
|
|
}
|
|
recalculateBoundingBox() {
|
|
for (let curve of this.curves) {
|
|
growBoundingBox(this.boundingBox, curve.bbox())
|
|
}
|
|
}
|
|
simplify(mode="corners") {
|
|
// Mode can be corners, smooth or auto
|
|
if (mode=="corners") {
|
|
let points = [{x: this.startx, y: this.starty}]
|
|
for (let curve of this.curves) {
|
|
points.push(curve.points[3])
|
|
}
|
|
// points = points.concat(this.curves)
|
|
let newpoints = simplifyPolyline(points, 10, false)
|
|
this.curves = []
|
|
let lastpoint = newpoints.shift()
|
|
let midpoint
|
|
for (let point of newpoints) {
|
|
midpoint = {x: (lastpoint.x+point.x)/2, y: (lastpoint.y+point.y)/2}
|
|
let bezier = new Bezier(lastpoint.x, lastpoint.y,
|
|
midpoint.x, midpoint.y,
|
|
midpoint.x,midpoint.y,
|
|
point.x,point.y)
|
|
this.curves.push(bezier)
|
|
lastpoint = point
|
|
}
|
|
} else if (mode=="smooth") {
|
|
let error = 30;
|
|
let points = [[this.startx, this.starty]]
|
|
for (let curve of this.curves) {
|
|
points.push([curve.points[3].x, curve.points[3].y])
|
|
}
|
|
this.curves = []
|
|
let curves = fitCurve.fitCurve(points, error)
|
|
for (let curve of curves) {
|
|
let bezier = new Bezier(curve[0][0], curve[0][1],
|
|
curve[1][0],curve[1][1],
|
|
curve[2][0], curve[2][1],
|
|
curve[3][0], curve[3][1])
|
|
this.curves.push(bezier)
|
|
|
|
}
|
|
}
|
|
this.recalculateBoundingBox()
|
|
}
|
|
draw(context) {
|
|
let ctx = context.ctx;
|
|
ctx.beginPath()
|
|
ctx.lineWidth = this.lineWidth
|
|
ctx.moveTo(this.startx, this.starty)
|
|
for (let curve of this.curves) {
|
|
ctx.bezierCurveTo(curve.points[1].x, curve.points[1].y,
|
|
curve.points[2].x, curve.points[2].y,
|
|
curve.points[3].x, curve.points[3].y)
|
|
|
|
// Debug, show curve endpoints
|
|
// ctx.beginPath()
|
|
// ctx.arc(curve.points[3].x,curve.points[3].y, 3, 0, 2*Math.PI)
|
|
// ctx.fill()
|
|
}
|
|
if (this.filled) {
|
|
if (this.fillImage) {
|
|
let pat = ctx.createPattern(this.fillImage, "no-repeat")
|
|
ctx.fillStyle = pat
|
|
} else {
|
|
ctx.fillStyle = this.fillStyle
|
|
}
|
|
ctx.fill()
|
|
}
|
|
if (this.stroked) {
|
|
ctx.strokeStyle = this.strokeStyle
|
|
ctx.stroke()
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
class GraphicsObject {
|
|
constructor(uuid) {
|
|
this.x = 0;
|
|
this.y = 0;
|
|
this.rotation = 0; // in radians
|
|
this.scale = 1;
|
|
if (!uuid) {
|
|
this.idx = uuidv4()
|
|
} else {
|
|
this.idx = uuid
|
|
}
|
|
pointerList[this.idx] = this
|
|
|
|
this.currentFrameNum = 0;
|
|
this.currentLayer = 0;
|
|
this.layers = [new Layer()]
|
|
// this.children = []
|
|
|
|
this.shapes = []
|
|
}
|
|
get activeLayer() {
|
|
return this.layers[this.currentLayer]
|
|
}
|
|
get children() {
|
|
return this.layers[this.currentLayer].children
|
|
}
|
|
get currentFrame() {
|
|
return this.layers[this.currentLayer].frames[this.currentFrameNum]
|
|
}
|
|
get maxFrame() {
|
|
let maxFrames = []
|
|
for (let layer of this.layers) {
|
|
maxFrames.push(layer.frames.length)
|
|
}
|
|
return Math.max(maxFrames)
|
|
}
|
|
bbox() {
|
|
let bbox;
|
|
if (this.currentFrame.shapes.length > 0) {
|
|
bbox = this.currentFrame.shapes[0].boundingBox
|
|
for (let shape of this.currentFrame.shapes) {
|
|
growBoundingBox(bbox, shape.boundingBox)
|
|
}
|
|
}
|
|
if (this.children.length > 0) {
|
|
if (!bbox) {
|
|
bbox = this.children[0].bbox()
|
|
}
|
|
for (let child of this.children) {
|
|
growBoundingBox(bbox, child.bbox())
|
|
}
|
|
}
|
|
return bbox
|
|
}
|
|
draw(context) {
|
|
let ctx = context.ctx;
|
|
ctx.translate(this.x, this.y)
|
|
ctx.rotate(this.rotation)
|
|
if (this.currentFrameNum>=this.maxFrame) {
|
|
this.currentFrameNum = 0;
|
|
}
|
|
for (let shape of this.currentFrame.shapes) {
|
|
shape.draw(context)
|
|
}
|
|
for (let child of this.children) {
|
|
let idx = child.idx
|
|
if (idx in this.currentFrame.keys) {
|
|
child.x = this.currentFrame.keys[idx].x;
|
|
child.y = this.currentFrame.keys[idx].y;
|
|
child.rotation = this.currentFrame.keys[idx].rotation;
|
|
child.scale = this.currentFrame.keys[idx].scale;
|
|
ctx.save()
|
|
child.draw(context)
|
|
ctx.restore()
|
|
}
|
|
}
|
|
if (this == context.activeObject) {
|
|
if (context.activeCurve) {
|
|
ctx.strokeStyle = "magenta"
|
|
ctx.beginPath()
|
|
ctx.moveTo(context.activeCurve.current.points[0].x, context.activeCurve.current.points[0].y)
|
|
ctx.bezierCurveTo(context.activeCurve.current.points[1].x, context.activeCurve.current.points[1].y,
|
|
context.activeCurve.current.points[2].x, context.activeCurve.current.points[2].y,
|
|
context.activeCurve.current.points[3].x, context.activeCurve.current.points[3].y
|
|
)
|
|
ctx.stroke()
|
|
}
|
|
for (let item of context.selection) {
|
|
ctx.save()
|
|
ctx.strokeStyle = "#00ffff"
|
|
ctx.translate(item.x, item.y)
|
|
ctx.beginPath()
|
|
let bbox = item.bbox()
|
|
ctx.rect(bbox.x.min, bbox.y.min, bbox.x.max, bbox.y.max)
|
|
ctx.stroke()
|
|
ctx.restore()
|
|
}
|
|
if (context.selectionRect) {
|
|
ctx.save()
|
|
ctx.strokeStyle = "#00ffff"
|
|
ctx.beginPath()
|
|
ctx.rect(
|
|
context.selectionRect.x1, context.selectionRect.y1,
|
|
context.selectionRect.x2 - context.selectionRect.x1,
|
|
context.selectionRect.y2 - context.selectionRect.y1
|
|
)
|
|
ctx.stroke()
|
|
ctx.restore()
|
|
}
|
|
}
|
|
}
|
|
addShape(shape) {
|
|
this.currentFrame.shapes.push(shape)
|
|
}
|
|
addObject(object, x=0, y=0) {
|
|
this.children.push(object)
|
|
let idx = object.idx
|
|
this.currentFrame.keys[idx] = {
|
|
x: x,
|
|
y: y,
|
|
rotation: 0,
|
|
scale: 1,
|
|
}
|
|
}
|
|
removeShape(shape) {
|
|
for (let layer of this.layers) {
|
|
for (let frame of layer.frames) {
|
|
let shapeIndex = frame.shapes.indexOf(shape)
|
|
if (shapeIndex >= 0) {
|
|
frame.shapes.splice(shapeIndex, 1)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
let root = new GraphicsObject();
|
|
context.activeObject = root
|
|
|
|
async function greet() {
|
|
// Learn more about Tauri commands at https://tauri.app/develop/calling-rust/
|
|
greetMsgEl.textContent = await invoke("greet", { name: greetInputEl.value });
|
|
|
|
}
|
|
|
|
window.addEventListener("DOMContentLoaded", () => {
|
|
rootPane = document.querySelector("#root")
|
|
rootPane.appendChild(createPane(toolbar()))
|
|
rootPane.addEventListener("mousemove", (e) => {
|
|
mouseEvent = e;
|
|
})
|
|
let [_toolbar, panel] = splitPane(rootPane, 10, true)
|
|
let [_stage, _infopanel] = splitPane(panel, 70, false, createPane(infopanel()))
|
|
});
|
|
|
|
window.addEventListener("resize", () => {
|
|
updateLayout(rootPane)
|
|
})
|
|
|
|
window.addEventListener("keypress", (e) => {
|
|
// let shortcuts = {}
|
|
// for (let shortcut of config.shortcuts) {
|
|
// shortcut = shortcut.split("+")
|
|
// TODO
|
|
// }
|
|
console.log(e)
|
|
if (e.key == config.shortcuts.playAnimation) {
|
|
console.log("Spacebar pressed")
|
|
} else if (e.key == config.shortcuts.undo && e.ctrlKey == true) {
|
|
undo()
|
|
} else if (e.key == config.shortcuts.redo && e.ctrlKey == true) {
|
|
redo()
|
|
}
|
|
})
|
|
|
|
function stage() {
|
|
let stage = document.createElement("canvas")
|
|
let scroller = document.createElement("div")
|
|
stage.className = "stage"
|
|
stage.width = 1500
|
|
stage.height = 1000
|
|
scroller.className = "scroll"
|
|
stage.addEventListener("drop", (e) => {
|
|
e.preventDefault()
|
|
let mouse = getMousePos(stage, e)
|
|
const imageTypes = ['image/png', 'image/gif', 'image/avif', 'image/jpeg',
|
|
'image/svg+xml', 'image/webp'
|
|
];
|
|
if (e.dataTransfer.items) {
|
|
let i = 0
|
|
for (let item of e.dataTransfer.items) {
|
|
if (item.kind == "file") {
|
|
let file = item.getAsFile()
|
|
if (imageTypes.includes(file.type)) {
|
|
let img = new Image()
|
|
img.src = window.URL.createObjectURL(file)
|
|
img.ix = i
|
|
img.onload = function() {
|
|
let width = img.width
|
|
let height = img.height
|
|
let imageObject = new GraphicsObject()
|
|
let ct = {
|
|
...context,
|
|
fillImage: img,
|
|
}
|
|
let imageShape = new Shape(0, 0, ct, false)
|
|
imageShape.addLine(width, 0)
|
|
imageShape.addLine(width, height)
|
|
imageShape.addLine(0, height)
|
|
imageShape.addLine(0, 0)
|
|
imageShape.recalculateBoundingBox()
|
|
imageObject.addShape(imageShape)
|
|
context.activeObject.addObject(
|
|
imageObject,
|
|
mouse.x-width/2 + (20*img.ix),
|
|
mouse.y-height/2 + (20*img.ix))
|
|
updateUI()
|
|
}
|
|
}
|
|
i++;
|
|
}
|
|
}
|
|
} else {
|
|
}
|
|
})
|
|
stage.addEventListener("dragover", (e) => {
|
|
e.preventDefault()
|
|
})
|
|
canvases.push(stage)
|
|
scroller.appendChild(stage)
|
|
stage.addEventListener("mousedown", (e) => {
|
|
let mouse = getMousePos(stage, e)
|
|
switch (mode) {
|
|
case "rectangle":
|
|
case "draw":
|
|
pushState()
|
|
context.mouseDown = true
|
|
context.activeShape = new Shape(mouse.x, mouse.y, context, true, true)
|
|
context.lastMouse = mouse
|
|
break;
|
|
case "select":
|
|
let selection = selectCurve(context, mouse)
|
|
if (selection) {
|
|
context.dragging = true
|
|
context.activeCurve = {
|
|
initial: selection.curve,
|
|
current: new Bezier(selection.curve.points),
|
|
shape: selection.shape,
|
|
startmouse: mouse
|
|
}
|
|
console.log("gonna move this")
|
|
} else {
|
|
let selected = false
|
|
let child;
|
|
// Have to iterate in reverse order to grab the frontmost object when two overlap
|
|
for (let i=context.activeObject.children.length-1; i>=0; i--) {
|
|
child = context.activeObject.children[i]
|
|
// let bbox = child.bbox()
|
|
if (hitTest(mouse, child)) {
|
|
if (context.selection.indexOf(child) != -1) {
|
|
// dragging = true
|
|
}
|
|
context.selection = [child]
|
|
selected = true
|
|
break
|
|
}
|
|
}
|
|
if (!selected) {
|
|
context.selection = []
|
|
context.selectionRect = {x1: mouse.x, x2: mouse.x, y1: mouse.y, y2:mouse.y}
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
context.lastMouse = mouse
|
|
updateUI()
|
|
})
|
|
stage.addEventListener("mouseup", (e) => {
|
|
context.mouseDown = false
|
|
context.dragging = false
|
|
context.selectionRect = undefined
|
|
let mouse = getMousePos(stage, e)
|
|
switch (mode) {
|
|
case "draw":
|
|
if (context.activeShape) {
|
|
context.activeShape.addLine(mouse.x, mouse.y)
|
|
context.activeShape.simplify(context.simplifyMode)
|
|
actions.addShape.create(context.activeObject, context.activeShape)
|
|
// context.activeObject.addShape(context.activeShape)
|
|
context.activeShape = undefined
|
|
}
|
|
break;
|
|
case "rectangle":
|
|
context.activeShape = undefined
|
|
break;
|
|
case "select":
|
|
if (context.activeCurve) {
|
|
let newCurves = []
|
|
for (let curve of context.activeCurve.shape.curves) {
|
|
if (curve == context.activeCurve.initial) {
|
|
newCurves.push(context.activeCurve.current)
|
|
} else {
|
|
newCurves.push(curve)
|
|
}
|
|
}
|
|
actions.editShape.create(context.activeCurve.shape, newCurves)
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
context.lastMouse = mouse
|
|
context.activeCurve = undefined
|
|
updateUI()
|
|
})
|
|
stage.addEventListener("mousemove", (e) => {
|
|
let mouse = getMousePos(stage, e)
|
|
switch (mode) {
|
|
case "draw":
|
|
context.activeCurve = undefined
|
|
if (context.activeShape) {
|
|
if (vectorDist(mouse, context.lastMouse) > minSegmentSize) {
|
|
context.activeShape.addLine(mouse.x, mouse.y)
|
|
context.lastMouse = mouse
|
|
}
|
|
}
|
|
break;
|
|
case "rectangle":
|
|
context.activeCurve = undefined
|
|
if (context.activeShape) {
|
|
context.activeShape.clear()
|
|
context.activeShape.addLine(mouse.x, context.activeShape.starty)
|
|
context.activeShape.addLine(mouse.x, mouse.y)
|
|
context.activeShape.addLine(context.activeShape.startx, mouse.y)
|
|
context.activeShape.addLine(context.activeShape.startx, context.activeShape.starty)
|
|
context.activeShape.recalculateBoundingBox()
|
|
}
|
|
break;
|
|
case "select":
|
|
if (context.dragging) {
|
|
// let dist = vectorDist(mouse, context.activeCurve.points[1])
|
|
// let cpoint = context.activeCurve.points[1]
|
|
// if (vectorDist(mouse, context.activeCurve.points[2]) < dist) {
|
|
// cpoint = context.activeCurve.points[2]
|
|
// }
|
|
// cpoint.x += (mouse.x - context.lastMouse.x)
|
|
// cpoint.y += (mouse.y - context.lastMouse.y)
|
|
context.activeCurve.current.points = moldCurve(
|
|
context.activeCurve.initial, mouse, context.activeCurve.startmouse
|
|
).points
|
|
} else if (context.selectionRect) {
|
|
context.selectionRect.x2 = mouse.x
|
|
context.selectionRect.y2 = mouse.y
|
|
context.selection = []
|
|
for (let child of context.activeObject.children) {
|
|
if (hitTest(regionToBbox(context.selectionRect), child)) {
|
|
context.selection.push(child)
|
|
}
|
|
}
|
|
} else {
|
|
let selection = selectCurve(context, mouse)
|
|
if (selection) {
|
|
context.activeCurve = {
|
|
current: selection.curve,
|
|
initial: new Bezier(selection.curve.points),
|
|
shape: selection.shape,
|
|
startmouse: mouse
|
|
}
|
|
} else {
|
|
context.activeCurve = undefined
|
|
}
|
|
}
|
|
context.lastMouse = mouse
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
updateUI()
|
|
})
|
|
return scroller
|
|
}
|
|
|
|
function toolbar() {
|
|
let tools_scroller = document.createElement("div")
|
|
tools_scroller.className = "toolbar"
|
|
for (let tool in tools) {
|
|
let toolbtn = document.createElement("button")
|
|
toolbtn.className = "toolbtn"
|
|
let icon = document.createElement("img")
|
|
icon.className = "icon"
|
|
icon.src = tools[tool].icon
|
|
toolbtn.appendChild(icon)
|
|
tools_scroller.appendChild(toolbtn)
|
|
toolbtn.addEventListener("click", () => {
|
|
mode = tool
|
|
console.log(tool)
|
|
})
|
|
}
|
|
let tools_break = document.createElement("div")
|
|
tools_break.className = "horiz_break"
|
|
tools_scroller.appendChild(tools_break)
|
|
let fillColor = document.createElement("input")
|
|
let strokeColor = document.createElement("input")
|
|
fillColor.className = "color-field"
|
|
strokeColor.className = "color-field"
|
|
fillColor.value = "#ffffff"
|
|
strokeColor.value = "#000000"
|
|
context.fillStyle = fillColor.value
|
|
context.strokeStyle = strokeColor.value
|
|
fillColor.addEventListener('click', e => {
|
|
Coloris({
|
|
el: ".color-field",
|
|
selectInput: true,
|
|
focusInput: true,
|
|
theme: 'default',
|
|
swatches: context.swatches,
|
|
defaultColor: '#ffffff',
|
|
onChange: (color) => {
|
|
context.fillStyle = color;
|
|
}
|
|
})
|
|
})
|
|
strokeColor.addEventListener('click', e => {
|
|
Coloris({
|
|
el: ".color-field",
|
|
selectInput: true,
|
|
focusInput: true,
|
|
theme: 'default',
|
|
swatches: context.swatches,
|
|
defaultColor: '#000000',
|
|
onChange: (color) => {
|
|
context.strokeStyle = color;
|
|
}
|
|
})
|
|
})
|
|
// Fill and stroke colors use the same set of swatches
|
|
fillColor.addEventListener("change", e => {
|
|
context.swatches.unshift(fillColor.value)
|
|
if (context.swatches.length>12) context.swatches.pop();
|
|
})
|
|
strokeColor.addEventListener("change", e => {
|
|
context.swatches.unshift(strokeColor.value)
|
|
if (context.swatches.length>12) context.swatches.pop();
|
|
})
|
|
tools_scroller.appendChild(fillColor)
|
|
tools_scroller.appendChild(strokeColor)
|
|
return tools_scroller
|
|
}
|
|
|
|
function infopanel() {
|
|
let panel = document.createElement("div")
|
|
panel.className = "infopanel"
|
|
let input;
|
|
let label;
|
|
let span;
|
|
// for (let i=0; i<10; i++) {
|
|
for (let property in tools[mode].properties) {
|
|
let prop = tools[mode].properties[property]
|
|
label = document.createElement("label")
|
|
label.className = "infopanel-field"
|
|
span = document.createElement("span")
|
|
span.className = "infopanel-label"
|
|
span.innerText = prop.label
|
|
switch (prop.type) {
|
|
case "number":
|
|
input = document.createElement("input")
|
|
input.className = "infopanel-input"
|
|
input.type = "number"
|
|
input.value = getProperty(context, property)
|
|
break;
|
|
case "enum":
|
|
input = document.createElement("select")
|
|
input.className = "infopanel-input"
|
|
let optionEl;
|
|
for (let option of prop.options) {
|
|
optionEl = document.createElement("option")
|
|
optionEl.value = option
|
|
optionEl.innerText = option
|
|
input.appendChild(optionEl)
|
|
}
|
|
input.value = getProperty(context, property)
|
|
break;
|
|
case "boolean":
|
|
input = document.createElement("input")
|
|
input.className = "infopanel-input"
|
|
input.type = "checkbox"
|
|
input.checked = getProperty(context, property)
|
|
break;
|
|
}
|
|
input.addEventListener("input", (e) => {
|
|
switch (prop.type) {
|
|
case "number":
|
|
if (!isNaN(e.target.value) && e.target.value > 0) {
|
|
setProperty(context, property, e.target.value)
|
|
}
|
|
break;
|
|
case "enum":
|
|
if (prop.options.indexOf(e.target.value) >= 0) {
|
|
setProperty(context, property, e.target.value)
|
|
}
|
|
break;
|
|
case "boolean":
|
|
setProperty(context, property, e.target.checked)
|
|
}
|
|
|
|
})
|
|
label.appendChild(span)
|
|
label.appendChild(input)
|
|
panel.appendChild(label)
|
|
}
|
|
return panel
|
|
}
|
|
|
|
function createPane(content=undefined) {
|
|
let div = document.createElement("div")
|
|
let header = document.createElement("div")
|
|
if (!content) {
|
|
content = stage() // TODO: change based on type
|
|
}
|
|
header.className = "header"
|
|
|
|
let button = document.createElement("button")
|
|
header.appendChild(button)
|
|
let icon = document.createElement("img")
|
|
icon.className="icon"
|
|
icon.src = "/assets/stage.svg"
|
|
button.appendChild(icon)
|
|
|
|
div.className = "vertical-grid"
|
|
header.style.height = "calc( 2 * var(--lineheight))"
|
|
content.style.height = "calc( 100% - 2 * var(--lineheight) )"
|
|
div.appendChild(header)
|
|
div.appendChild(content)
|
|
return div
|
|
}
|
|
|
|
function splitPane(div, percent, horiz, newPane=undefined) {
|
|
let content = div.firstElementChild
|
|
let div1 = document.createElement("div")
|
|
let div2 = document.createElement("div")
|
|
|
|
div1.className = "panecontainer"
|
|
div2.className = "panecontainer"
|
|
|
|
div1.appendChild(content)
|
|
if (newPane) {
|
|
div2.appendChild(newPane)
|
|
} else {
|
|
div2.appendChild(createPane())
|
|
}
|
|
div.appendChild(div1)
|
|
div.appendChild(div2)
|
|
|
|
if (horiz) {
|
|
div.className = "horizontal-grid"
|
|
} else {
|
|
div.className = "vertical-grid"
|
|
}
|
|
div.setAttribute("lb-percent", percent) // TODO: better attribute name
|
|
Coloris({el: ".color-field"})
|
|
updateUI()
|
|
updateLayout(rootPane)
|
|
return [div1, div2]
|
|
}
|
|
|
|
function updateLayout(element) {
|
|
let rect = element.getBoundingClientRect()
|
|
let percent = element.getAttribute("lb-percent")
|
|
percent ||= 50
|
|
let children = element.children
|
|
if (children.length != 2) return;
|
|
if (element.className == "horizontal-grid") {
|
|
children[0].style.width = `${rect.width * percent / 100}px`
|
|
children[1].style.width = `${rect.width * (100 - percent) / 100}px`
|
|
children[0].style.height = `${rect.height}px`
|
|
children[1].style.height = `${rect.height}px`
|
|
} else if (element.className == "vertical-grid") {
|
|
children[0].style.height = `${rect.height * percent / 100}px`
|
|
children[1].style.height = `${rect.height * (100 - percent) / 100}px`
|
|
children[0].style.width = `${rect.width}px`
|
|
children[1].style.width = `${rect.width}px`
|
|
}
|
|
if (children[0].getAttribute("lb-percent")) {
|
|
updateLayout(children[0])
|
|
}
|
|
if (children[1].getAttribute("lb-percent")) {
|
|
updateLayout(children[1])
|
|
}
|
|
}
|
|
|
|
function updateUI() {
|
|
for (let canvas of canvases) {
|
|
let ctx = canvas.getContext("2d")
|
|
ctx.reset();
|
|
ctx.fillStyle = "white"
|
|
ctx.fillRect(0,0,canvas.width,canvas.height)
|
|
|
|
context.ctx = ctx;
|
|
root.draw(context)
|
|
if (context.activeShape) {
|
|
context.activeShape.draw(context)
|
|
}
|
|
|
|
}
|
|
} |