@turbox3d/math
Version:
Large-scale graphics application math library
413 lines (412 loc) • 11.1 kB
JavaScript
"use strict";
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.Matrix3 = void 0;
var _classCallCheck2 = _interopRequireDefault(require("@babel/runtime/helpers/classCallCheck"));
var _createClass2 = _interopRequireDefault(require("@babel/runtime/helpers/createClass"));
var _MathUtils = require("../MathUtils");
var _Vector = require("./Vector2");
/* eslint-disable function-call-argument-newline */
var Matrix3 = exports.Matrix3 = /*#__PURE__*/function () {
function Matrix3() {
(0, _classCallCheck2["default"])(this, Matrix3);
this.isMatrix3 = true;
this.elements = [1, 0, 0, 0, 1, 0, 0, 0, 1];
if (arguments.length > 0) {
console.error('THREE.Matrix3: the constructor no longer reads arguments. use .set() instead.');
}
}
return (0, _createClass2["default"])(Matrix3, [{
key: "set",
value: function set(n11, n12, n13, n21, n22, n23, n31, n32, n33) {
var te = this.elements;
te[0] = n11;
te[1] = n21;
te[2] = n31;
te[3] = n12;
te[4] = n22;
te[5] = n32;
te[6] = n13;
te[7] = n23;
te[8] = n33;
return this;
}
}, {
key: "identity",
value: function identity() {
this.set(1, 0, 0, 0, 1, 0, 0, 0, 1);
return this;
}
}, {
key: "clone",
value: function clone() {
return new Matrix3().fromArray(this.elements);
}
}, {
key: "copy",
value: function copy(m) {
var te = this.elements;
var me = m.elements;
te[0] = me[0];
te[1] = me[1];
te[2] = me[2];
te[3] = me[3];
te[4] = me[4];
te[5] = me[5];
te[6] = me[6];
te[7] = me[7];
te[8] = me[8];
return this;
}
}, {
key: "extractBasis",
value: function extractBasis(xAxis, yAxis, zAxis) {
xAxis.setFromMatrix3Column(this, 0);
yAxis.setFromMatrix3Column(this, 1);
zAxis.setFromMatrix3Column(this, 2);
return this;
}
}, {
key: "setFromMatrix4",
value: function setFromMatrix4(m) {
var me = m.elements;
this.set(me[0], me[4], me[8], me[1], me[5], me[9], me[2], me[6], me[10]);
return this;
}
}, {
key: "add",
value: function add(b) {
var me = this.elements;
var be = b.elements;
this.set(me[0] + be[0], me[3] + be[3], me[6] + be[6], me[1] + be[1], me[4] + be[4], me[7] + be[7], me[2] + be[2], me[5] + be[5], me[8] + be[8]);
return this;
}
}, {
key: "added",
value: function added(b) {
var me = this.elements;
var be = b.elements;
var res = new Matrix3();
res.set(me[0] + be[0], me[3] + be[3], me[6] + be[6], me[1] + be[1], me[4] + be[4], me[7] + be[7], me[2] + be[2], me[5] + be[5], me[8] + be[8]);
return res;
}
}, {
key: "multiply",
value: function multiply(m) {
return this.multiplyMatrices(this, m);
}
}, {
key: "multiplied",
value: function multiplied(m) {
return new Matrix3().multiplyMatrices(this, m);
}
}, {
key: "premultiply",
value: function premultiply(m) {
return this.multiplyMatrices(m, this);
}
}, {
key: "premultiplied",
value: function premultiplied(m) {
return new Matrix3().multiplyMatrices(m, this);
}
}, {
key: "multiplyMatrices",
value: function multiplyMatrices(a, b) {
var ae = a.elements;
var be = b.elements;
var te = this.elements;
var a11 = ae[0];
var a12 = ae[3];
var a13 = ae[6];
var a21 = ae[1];
var a22 = ae[4];
var a23 = ae[7];
var a31 = ae[2];
var a32 = ae[5];
var a33 = ae[8];
var b11 = be[0];
var b12 = be[3];
var b13 = be[6];
var b21 = be[1];
var b22 = be[4];
var b23 = be[7];
var b31 = be[2];
var b32 = be[5];
var b33 = be[8];
te[0] = a11 * b11 + a12 * b21 + a13 * b31;
te[3] = a11 * b12 + a12 * b22 + a13 * b32;
te[6] = a11 * b13 + a12 * b23 + a13 * b33;
te[1] = a21 * b11 + a22 * b21 + a23 * b31;
te[4] = a21 * b12 + a22 * b22 + a23 * b32;
te[7] = a21 * b13 + a22 * b23 + a23 * b33;
te[2] = a31 * b11 + a32 * b21 + a33 * b31;
te[5] = a31 * b12 + a32 * b22 + a33 * b32;
te[8] = a31 * b13 + a32 * b23 + a33 * b33;
return this;
}
}, {
key: "multiplyScalar",
value: function multiplyScalar(s) {
var te = this.elements;
te[0] *= s;
te[3] *= s;
te[6] *= s;
te[1] *= s;
te[4] *= s;
te[7] *= s;
te[2] *= s;
te[5] *= s;
te[8] *= s;
return this;
}
}, {
key: "determinant",
value: function determinant() {
var te = this.elements;
var a = te[0];
var b = te[1];
var c = te[2];
var d = te[3];
var e = te[4];
var f = te[5];
var g = te[6];
var h = te[7];
var i = te[8];
return a * e * i - a * f * h - b * d * i + b * f * g + c * d * h - c * e * g;
}
}, {
key: "invert",
value: function invert() {
var te = this.elements;
var n11 = te[0];
var n21 = te[1];
var n31 = te[2];
var n12 = te[3];
var n22 = te[4];
var n32 = te[5];
var n13 = te[6];
var n23 = te[7];
var n33 = te[8];
var t11 = n33 * n22 - n32 * n23;
var t12 = n32 * n13 - n33 * n12;
var t13 = n23 * n12 - n22 * n13;
var det = n11 * t11 + n21 * t12 + n31 * t13;
if (det === 0) return this.set(0, 0, 0, 0, 0, 0, 0, 0, 0);
var detInv = 1 / det;
te[0] = t11 * detInv;
te[1] = (n31 * n23 - n33 * n21) * detInv;
te[2] = (n32 * n21 - n31 * n22) * detInv;
te[3] = t12 * detInv;
te[4] = (n33 * n11 - n31 * n13) * detInv;
te[5] = (n31 * n12 - n32 * n11) * detInv;
te[6] = t13 * detInv;
te[7] = (n21 * n13 - n23 * n11) * detInv;
te[8] = (n22 * n11 - n21 * n12) * detInv;
return this;
}
}, {
key: "inverted",
value: function inverted() {
var result = new Matrix3();
result.copy(this).invert();
return result;
}
}, {
key: "transpose",
value: function transpose() {
var tmp;
var m = this.elements;
tmp = m[1];
m[1] = m[3];
m[3] = tmp;
tmp = m[2];
m[2] = m[6];
m[6] = tmp;
tmp = m[5];
m[5] = m[7];
m[7] = tmp;
return this;
}
}, {
key: "getNormalMatrix",
value: function getNormalMatrix(matrix4) {
return this.setFromMatrix4(matrix4).copy(this).invert().transpose();
}
}, {
key: "transposeIntoArray",
value: function transposeIntoArray(r) {
var m = this.elements;
r[0] = m[0];
r[1] = m[3];
r[2] = m[6];
r[3] = m[1];
r[4] = m[4];
r[5] = m[7];
r[6] = m[2];
r[7] = m[5];
r[8] = m[8];
return this;
}
}, {
key: "setUvTransform",
value: function setUvTransform(tx, ty, sx, sy, rotation, cx, cy) {
var c = Math.cos(rotation);
var s = Math.sin(rotation);
this.set(sx * c, sx * s, -sx * (c * cx + s * cy) + cx + tx, -sy * s, sy * c, -sy * (-s * cx + c * cy) + cy + ty, 0, 0, 1);
return this;
}
}, {
key: "scale",
value: function scale(sx, sy) {
var te = this.elements;
te[0] *= sx;
te[3] *= sx;
te[6] *= sx;
te[1] *= sy;
te[4] *= sy;
te[7] *= sy;
return this;
}
}, {
key: "rotate",
value: function rotate(theta) {
var c = Math.cos(theta);
var s = Math.sin(theta);
var te = this.elements;
var a11 = te[0];
var a12 = te[3];
var a13 = te[6];
var a21 = te[1];
var a22 = te[4];
var a23 = te[7];
te[0] = c * a11 + s * a21;
te[3] = c * a12 + s * a22;
te[6] = c * a13 + s * a23;
te[1] = -s * a11 + c * a21;
te[4] = -s * a12 + c * a22;
te[7] = -s * a13 + c * a23;
return this;
}
}, {
key: "translate",
value: function translate(tx, ty) {
var te = this.elements;
te[0] += tx * te[2];
te[3] += tx * te[5];
te[6] += tx * te[8];
te[1] += ty * te[2];
te[4] += ty * te[5];
te[7] += ty * te[8];
return this;
}
}, {
key: "equals",
value: function equals(matrix) {
var te = this.elements;
var me = matrix.elements;
for (var i = 0; i < 9; i++) {
if (!_MathUtils.MathUtils.isEqual(te[i], me[i])) {
return false;
}
}
return true;
}
}, {
key: "fromArray",
value: function fromArray(array) {
var offset = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
for (var i = 0; i < 9; i++) {
this.elements[i] = array[i + offset];
}
return this;
}
}, {
key: "toArray",
value: function toArray() {
var array = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
var offset = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
var te = this.elements;
array[offset] = te[0];
array[offset + 1] = te[1];
array[offset + 2] = te[2];
array[offset + 3] = te[3];
array[offset + 4] = te[4];
array[offset + 5] = te[5];
array[offset + 6] = te[6];
array[offset + 7] = te[7];
array[offset + 8] = te[8];
return array;
}
/** 缩放，注意和 scale 的区别，这个不会影响 position */
}, {
key: "doScale",
value: function doScale(sx, sy) {
var te = this.elements;
te[0] *= sx;
te[1] *= sx;
te[2] *= sx;
te[3] *= sy;
te[4] *= sy;
te[5] *= sy;
return this;
}
/**
* 设置成缩放矩阵
*/
}, {
key: "setScale",
value: function setScale(scale) {
var x = scale.x;
var y = scale.y;
return this.set(x, 0, 0, 0, y, 0, 0, 0, 1);
}
/**
* 设置成旋转矩阵
*/
}, {
key: "setRotation",
value: function setRotation(angle) {
var c = Math.cos(angle);
var s = Math.sin(angle);
return this.set(c, -s, 0, s, c, 0, 0, 0, 1);
}
/**
* 设置成平移矩阵
*/
}, {
key: "setTranslation",
value: function setTranslation(translation) {
var x = translation.x;
var y = translation.y;
return this.set(1, 0, x, 0, 1, y, 0, 0, 1);
}
/**
* 把位置信息放到没用的两个矩阵索引
*/
}, {
key: "setPosition",
value: function setPosition(position) {
var me = this.elements;
me[6] = position.x;
me[7] = position.y;
}
}, {
key: "getPosition",
value: function getPosition() {
return new _Vector.Vector2(this.elements[6], this.elements[7]);
}
}, {
key: "compose",
value: function compose(position, rotation, scale) {
this.setRotation(rotation);
if (scale) {
this.doScale(scale.x, scale.y);
}
this.setPosition(position);
return this;
}
}]);
}();