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No longer need mitredExtrude

This commit is contained in:
Tony Garnock-Jones 2023-02-14 21:32:15 +01:00
parent cd623194d2
commit 3c1ddce07b
1 changed files with 0 additions and 58 deletions
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58
src/turtle.ts
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@ -287,61 +287,3 @@ export const TurtlePrimitives: Cat.Environment<TurtleVM> = Object.assign({}, Cat
return [];
},
} satisfies Cat.Environment<TurtleVM>);
function mitredExtrude(
name: string,
options: { shape: Vector3[], path: Vector3[], close?: boolean },
scene: Scene,
): Mesh {
const shape = options.shape;
const path = options.path;
const closed = options.close ?? false;
function miterNormal(v1: Vector3, v2: Vector3): Vector3 {
return Vector3.Cross(Vector3.Cross(v2, v1), v2.subtract(v1));
}
var allPaths = [];
for (var s = 0; s < shape.length; s++) {
let axisZ = path[1].subtract(path[0]).normalize();
const axisX = Vector3.Cross(scene.activeCamera!.position, axisZ).normalize();
const axisY = Vector3.Cross(axisZ, axisX);
let startPoint = path[0].add(axisX.scale(shape[s].x)).add(axisY.scale(shape[s].y));
const ribbonPath = [startPoint];
for (var p = 0; p < path.length - 2; p++) {
const nextAxisZ = path[p + 2].subtract(path[p + 1]).normalize();
startPoint = startPoint.add(axisZ.scale(new Ray(startPoint, axisZ).intersectsPlane(Plane.FromPositionAndNormal(path[p + 1], miterNormal(axisZ, nextAxisZ)))!));
ribbonPath.push(startPoint);
axisZ = nextAxisZ;
}
// Last Point
if (closed) {
let nextAxisZ = path[0].subtract(path[path.length - 1]).normalize();
startPoint = startPoint.add(axisZ.scale(new Ray(startPoint, axisZ).intersectsPlane(Plane.FromPositionAndNormal(path[path.length - 1], miterNormal(axisZ, nextAxisZ)))!));
ribbonPath.push(startPoint);
axisZ = nextAxisZ;
nextAxisZ = path[1].subtract(path[0]).normalize();
startPoint = startPoint.add(axisZ.scale(new Ray(startPoint, axisZ).intersectsPlane(Plane.FromPositionAndNormal(path[0], miterNormal(axisZ, nextAxisZ)))!));
ribbonPath.shift();
ribbonPath.unshift(startPoint);
} else {
startPoint = startPoint.add(axisZ.scale(new Ray(startPoint, axisZ).intersectsPlane(Plane.FromPositionAndNormal(path[path.length - 1], axisZ))!));
ribbonPath.push(startPoint);
}
allPaths.push(ribbonPath);
}
return MeshBuilder.CreateRibbon(name, {
pathArray: allPaths,
sideOrientation: Mesh.DOUBLESIDE,
closeArray: true,
closePath: closed,
}, scene);
}