add shaped path routing
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Stewart Allen
parent
cbc363d49f
commit
64380b6ef6
4 changed files with 157 additions and 25 deletions
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@ -125,7 +125,14 @@
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polys: encode(layer.polys, state),
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lines: encodePointArray(layer.lines, state),
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faces: codec.allocFloat32Array(layer.faces),
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color: layer.color
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color: layer.color,
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paths: layer.paths.map(path => {
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return {
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index: path.index,
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faces: path.faces,
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z: path.z
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}
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})
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} })
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};
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return enc;
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@ -138,7 +145,8 @@
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polys: decode(v.data[i].polys, state),
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lines: decodePointArray(v.data[i].lines),
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faces: v.data[i].faces,
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color: v.data[i].color
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color: v.data[i].color,
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paths: v.data[i].paths
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};
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}
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return render;
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@ -22,6 +22,7 @@
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lines: [],
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polys: [],
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faces: [],
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paths: [],
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color: colors || {
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line: 0,
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face: 0
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@ -37,33 +38,21 @@
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addPoly(poly) {
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this.current.polys.push(poly);
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// const lines = this.current.lines;
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// const points = poly.points;
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// const len = points.length;
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// for (let i=1; i<len; i++) {
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// lines.push(points[i-1], points[i]);
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// }
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// if (!poly.open) {
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// lines.push(points[len - 1], points[0]);
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// }
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return this;
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}
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addPolys(arr) {
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for (let i=0; i<arr.length; i++) {
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this.addPoly(arr[i]);
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addPolys(polys) {
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polys = flat(polys);
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for (let i=0; i<polys.length; i++) {
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this.addPoly(polys[i]);
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}
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return this;
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}
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addFlat(polys, options) {
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let opts = options || {};
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let offset = opts.offset || 1;
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if (Array.isArray(polys)) {
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polys = POLY.flatten(polys, [], true);
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} else {
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polys = POLY.flatten([polys], [], true);
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}
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addFlats(polys, options) {
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const opts = options || {};
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const offset = opts.offset || 1;
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polys = flat(polys);
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if (!polys.length) {
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return;
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}
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@ -81,7 +70,118 @@
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});
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});
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});
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return this;
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}
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addPaths(polys, options) {
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const opts = options || {};
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const offset = opts.offset || 1;
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polys = flat(polys);
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if (!polys.length) {
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return;
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}
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const profile = new THREE.Shape();
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profile.moveTo(-offset, -offset);
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profile.lineTo(-offset, offset);
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profile.lineTo( offset, offset);
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profile.lineTo( offset, -offset);
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polys.forEach(poly => {
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const contour = [];
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poly.points.forEach(p => {
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contour.push(new THREE.Vector2(p.x, p.y));
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});
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const {index, faces} = ProfiledContourGeometry(profile, contour, true);
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this.current.paths.push({ index, faces, z: poly.getZ() });
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});
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return this;
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}
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}
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function flat(polys) {
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if (Array.isArray(polys)) {
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return POLY.flatten(polys, [], true);
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} else {
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return POLY.flatten([polys], [], true);
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}
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}
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function ProfiledContourGeometry(profileShape, contour, contourClosed) {
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contourClosed = contourClosed !== undefined ? contourClosed : true;
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let profileGeometry = new THREE.ShapeBufferGeometry(profileShape);
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profileGeometry.rotateX(Math.PI * .5);
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let profile = profileGeometry.attributes.position;
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let faces = new Float32Array(profile.count * contour.length * 3);
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for (let i = 0; i < contour.length; i++) {
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let v1 = new THREE.Vector2().subVectors(contour[i - 1 < 0 ? contour.length - 1 : i - 1], contour[i]);
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let v2 = new THREE.Vector2().subVectors(contour[i + 1 == contour.length ? 0 : i + 1], contour[i]);
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let angle = v2.angle() - v1.angle();
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let halfAngle = angle * .5;
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let hA = halfAngle;
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let tA = v2.angle() + Math.PI * .5;
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if (!contourClosed){
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if (i == 0 || i == contour.length - 1) {hA = Math.PI * .5;}
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if (i == contour.length - 1) {tA = v1.angle() - Math.PI * .5;}
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}
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let shift = Math.tan(hA - Math.PI * .5);
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let shiftMatrix = new THREE.Matrix4().set(
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1, 0, 0, 0,
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-shift, 1, 0, 0,
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0, 0, 1, 0,
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0, 0, 0, 1
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);
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let tempAngle = tA;
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let rotationMatrix = new THREE.Matrix4().set(
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Math.cos(tempAngle), -Math.sin(tempAngle), 0, 0,
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Math.sin(tempAngle), Math.cos(tempAngle), 0, 0,
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0, 0, 1, 0,
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0, 0, 0, 1
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);
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let translationMatrix = new THREE.Matrix4().set(
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1, 0, 0, contour[i].x,
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0, 1, 0, contour[i].y,
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0, 0, 1, 0,
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0, 0, 0, 1,
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);
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let cloneProfile = profile.clone();
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cloneProfile.applyMatrix4(shiftMatrix);
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cloneProfile.applyMatrix4(rotationMatrix);
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cloneProfile.applyMatrix4(translationMatrix);
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faces.set(cloneProfile.array, cloneProfile.count * i * 3);
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}
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let index = [];
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let lastCorner = contourClosed == false ? contour.length - 1: contour.length;
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for (let i = 0; i < lastCorner; i++) {
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for (let j = 0; j < profile.count; j++) {
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let currCorner = i;
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let nextCorner = i + 1 == contour.length ? 0 : i + 1;
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let currPoint = j;
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let nextPoint = j + 1 == profile.count ? 0 : j + 1;
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let a = nextPoint + profile.count * currCorner;
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let b = currPoint + profile.count * currCorner;
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let c = currPoint + profile.count * nextCorner;
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let d = nextPoint + profile.count * nextCorner;
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index.push(a, b, d);
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index.push(b, c, d);
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}
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}
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return {index, faces};
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}
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self.kiri.Render = Render;
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