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Lightningbeam
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add hard edge simplification

This commit is contained in:
Skyler Lehmkuhl 2024-11-15 05:26:12 -05:00
parent 455e401794
commit d85da1c3a3
1 changed files with 31 additions and 38 deletions
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69
src/main.js
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@ -10,7 +10,7 @@ let canvases = [];
let mode = "draw"
let minSegmentSize = 5;
let maxSmoothAngle = 0.2;
let maxSmoothAngle = 0.6;
let tools = {
select: {
@ -99,43 +99,36 @@ class Shape {
}
simplify(mode="smooth") {
// Mode can be corners, smooth or auto
// let maxIndex;
// for (let j=0; j<5; j++) {
// if (this.curves.length < 3) return;
// maxIndex = this.curves.length-1;
// for (let i=1; i<maxIndex; i++) {
// let P1 = this.curves[i]
// let P2 = this.curves[i-1]
// let P3 = this.curves[i+1]
// let angle = Math.atan2(P3.y - P1.y, P3.x - P1.x) -
// Math.atan2(P2.y - P1.y, P2.x - P1.x);
// angle = Math.PI - Math.abs(angle)
// if (Math.abs(angle) < maxSmoothAngle) {
// if (mode=="corners") {
// this.curves.splice(i,1)
// } else if (mode=="smooth") {
// P3.cp1x = P1.x;
// P3.cp1y = P1.y;
// P3.cp2x = P1.x;
// P3.cp2y = P1.y;
// this.curves.splice(i,1)
// }
// i;
// maxIndex--;
// console.log(angle)
// }
// }
// }
let error = 30;
let points = [[this.startx, this.starty]]
for (let curve of this.curves) {
points.push([curve.x, curve.y])
}
this.curves = []
let curves = fitCurve.fitCurve(points, error)
for (let curve of curves) {
this.curves.push(new Curve(curve[1][0],curve[1][1],curve[2][0], curve[2][1], curve[3][0], curve[3][1]))
if (mode=="corners") {
let angles;
while (this.curves.length > 3) {
angles = [2*Math.PI]
for (let i=1; i<this.curves.length-1; i++) {
let P1 = this.curves[i]
let P2 = this.curves[i-1]
let P3 = this.curves[i+1]
let angle = Math.atan2(P3.y - P1.y, P3.x - P1.x) -
Math.atan2(P2.y - P1.y, P2.x - P1.x);
angles[i] = Math.abs(Math.PI - Math.abs(angle))
}
let smallestAngle = Math.min(...angles)
if (smallestAngle < maxSmoothAngle) {
this.curves.splice(angles.indexOf(smallestAngle), 1)
} else {
break;
}
}
} else if (mode=="smooth") {
let error = 30;
let points = [[this.startx, this.starty]]
for (let curve of this.curves) {
points.push([curve.x, curve.y])
}
this.curves = []
let curves = fitCurve.fitCurve(points, error)
for (let curve of curves) {
this.curves.push(new Curve(curve[1][0],curve[1][1],curve[2][0], curve[2][1], curve[3][0], curve[3][1]))
}
}
}
}