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@ -1,10 +1,19 @@
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import { Box3, BufferGeometry, Geometry, Line, Matrix4, Mesh, Object3D, Vector, Vector2, Vector3, Scene } from 'three';
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import { Box3, BufferGeometry, Geometry, Line, Matrix4, Mesh, Object3D, Vector, Vector2, Vector3 } from 'three';
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import { ToFixed } from '../Common/Utils';
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import { Matrix2 } from './Matrix2';
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export const cZeroVec = new Vector3();
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export const cXAxis = new Vector3(1, 0, 0);
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export const cYAxis = new Vector3(0, 1, 0);
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export const cZAxis = new Vector3(0, 0, 1);
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export const ZeroVec = new Vector3();
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export const XAxis = new Vector3(1, 0, 0);
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export const YAxis = new Vector3(0, 1, 0);
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export const ZAxis = new Vector3(0, 0, 1);
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export function AsVector2(p: { x: number, y: number })
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{
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return new Vector2(p.x, p.y);
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}
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export function AsVector3(p: { x: number, y: number, z?: number })
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{
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return new Vector3(p.x, p.y, p.z);
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}
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/**
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* 判断一维线段a和b是否存在交集
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@ -16,16 +25,21 @@ export function isIntersect(amin: number, amax: number, bmin: number, bmax: numb
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/**
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* 旋转一个点,旋转中心在原点
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*
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* @export
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* @param {Vector3} pt 点
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* @param {number} ang 角度.
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* @param {Vector3} p 点
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* @param {number} a 角度.
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* @returns {Vector3} 返回pt不拷贝.
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*/
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export function rotatePoint(pt: Vector3, ang: number): Vector3
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export function rotatePoint(p: Vector3, a: number): Vector3
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{
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new Matrix2().setRotate(ang).applyVector(pt);
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return pt;
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let s = Math.sin(a);
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let c = Math.cos(a);
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let x = p.x * c - p.y * s;
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let y = p.x * s + p.y * c;
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p.x = x;
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p.y = y;
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return p;
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}
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export function equaln(v1: number, v2: number, fuzz = 1e-5)
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@ -82,14 +96,14 @@ export function angleTo(v1: Vector3, v2: Vector3, ref: Vector3 = new Vector3(0,
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ref.multiplyScalar(-1);
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let up = getLoocAtUpVec(ref);
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let refOcs = new Matrix4();
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refOcs.lookAt(cZeroVec, ref, up);
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refOcs.lookAt(ZeroVec, ref, up);
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let refOcsInv = new Matrix4().getInverse(refOcs);
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v1.applyMatrix4(refOcsInv);
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v2.applyMatrix4(refOcsInv);
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v1.z = 0;
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v2.z = 0;
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}
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if (v1.equals(cZeroVec) || v2.equals(cZeroVec))
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if (v1.equals(ZeroVec) || v2.equals(ZeroVec))
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return 0;
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let cv = new Vector3().crossVectors(v1, v2).normalize();
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return cv.z === 0 ? v1.angleTo(v2) : v1.angleTo(v2) * cv.z;
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@ -97,23 +111,23 @@ export function angleTo(v1: Vector3, v2: Vector3, ref: Vector3 = new Vector3(0,
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export function getLoocAtUpVec(dir: Vector3): Vector3
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{
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if (dir.equals(cZeroVec))
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if (dir.equals(ZeroVec))
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{
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throw ("zero vector")
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}
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let norm = dir.clone().normalize();
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if (norm.equals(cZAxis))
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if (norm.equals(ZAxis))
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{
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return new Vector3(0, 1, 0);
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}
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else if (norm.equals(cZAxis.clone().negate()))
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else if (norm.equals(ZAxis.clone().negate()))
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{
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return new Vector3(0, -1, 0);
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}
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else
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{
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let xv: Vector3 = new Vector3();
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xv.crossVectors(cZAxis, norm);
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xv.crossVectors(ZAxis, norm);
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let up = new Vector3();
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up.crossVectors(norm, xv);
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@ -125,7 +139,7 @@ export function createLookAtMat4(dir: Vector3): Matrix4
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{
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let up = getLoocAtUpVec(dir);
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let mat = new Matrix4();
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mat.lookAt(cZeroVec, dir, up);
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mat.lookAt(ZeroVec, dir, up);
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return mat;
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}
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@ -200,15 +214,6 @@ export function MoveMatrix(v: Vector3): Matrix4
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return new Matrix4().setPosition(v);
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}
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export function getProjectDist(v1: Vector3, v2: Vector3)
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{
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let ang = v1.angleTo(v2);
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let dist = v1.length();
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return {
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h: dist * Math.cos(ang),
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v: dist * Math.sin(ang)
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}
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}
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//获得输入点在2线组成的4个区间的位置
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export function getPtPostion(sp: Vector3, ep: Vector3, c: Vector3, inPt: Vector3)
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{
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@ -241,16 +246,14 @@ export function angleAndX(v: Vector3 | Vector2)
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/**
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* 将角度调整为0-2pi之间
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*
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* @export
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* @param {number} an
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*/
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export function angleTo2Pi(an: number)
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export function clampRad(an: number)
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{
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an = an % (Math.PI * 2);
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if (an < 0) an += Math.PI * 2
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return an;
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}
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export function updateGeometry(l: Line | Mesh, geometry: Geometry | BufferGeometry)
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{
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let geo = l.geometry as Geometry;
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@ -329,7 +332,7 @@ export function getEulerAngle(x: Vector3, y: Vector3, z: Vector3)
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{
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let roY = Math.atan2(x.z, Math.sqrt(x.x ** 2 + x.y ** 2)) * -180 / Math.PI;
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let roZ = Math.atan2(x.y, x.x);
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let vec = cYAxis.clone();
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let vec = YAxis.clone();
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let roMat = new Matrix4().makeRotationZ(roZ);
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roZ *= 180 / Math.PI;
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vec.applyMatrix4(roMat);
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ChenX
5 years ago