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// eslint-disable-next-line import/no-cycle
import { areMatricesEqual } from 'vtk.js/Sources/Common/Core/Math';
import { IDENTITY } from 'vtk.js/Sources/Common/Core/Math/Constants';
const NoOp = (v) => v;
const EPSILON = 1e-6;
class Transform {
constructor(useDegree = false) {
this.matrix = mat4.identity(new Float64Array(16));
this.tmp = new Float64Array(3);
this.angleConv = useDegree ? glMatrix.toRadian : NoOp;
}
rotateFromDirections(originDirection, targetDirection) {
const src = new Float64Array(3);
const dst = new Float64Array(3);
const transf = new Float64Array(16);
vec3.set(src, originDirection[0], originDirection[1], originDirection[2]);
vec3.set(dst, targetDirection[0], targetDirection[1], targetDirection[2]);
vec3.normalize(src, src);
vec3.normalize(dst, dst);
const cosAlpha = vec3.dot(src, dst);
if (cosAlpha >= 1) {
return this;
}
vec3.cross(this.tmp, src, dst);
if (vec3.length(this.tmp) < EPSILON) {
// cross product is 0, so pick arbitrary axis perpendicular
// to originDirection.
vec3.cross(this.tmp, [1, 0, 0], originDirection);
if (vec3.length(this.tmp) < EPSILON) {
vec3.cross(this.tmp, [0, 1, 0], originDirection);
}
}
mat4.fromRotation(transf, Math.acos(cosAlpha), this.tmp);
mat4.multiply(this.matrix, this.matrix, transf);
return this;
}
rotate(angle, axis) {
vec3.set(this.tmp, ...axis);
vec3.normalize(this.tmp, this.tmp);
mat4.rotate(this.matrix, this.matrix, this.angleConv(angle), this.tmp);
return this;
}
rotateX(angle) {
mat4.rotateX(this.matrix, this.matrix, this.angleConv(angle));
return this;
}
rotateY(angle) {
mat4.rotateY(this.matrix, this.matrix, this.angleConv(angle));
return this;
}
rotateZ(angle) {
mat4.rotateZ(this.matrix, this.matrix, this.angleConv(angle));
return this;
}
translate(x, y, z) {
vec3.set(this.tmp, x, y, z);
mat4.translate(this.matrix, this.matrix, this.tmp);
return this;
}
scale(sx, sy, sz) {
vec3.set(this.tmp, sx, sy, sz);
mat4.scale(this.matrix, this.matrix, this.tmp);
return this;
}
multiply(mat4x4) {
mat4.multiply(this.matrix, this.matrix, mat4x4);
return this;
}
multiply3x3(mat3x3) {
mat4.multiply(this.matrix, this.matrix, [
mat3x3[0],
mat3x3[1],
mat3x3[2],
0,
mat3x3[3],
mat3x3[4],
mat3x3[5],
0,
mat3x3[6],
mat3x3[7],
mat3x3[8],
0,
0,
0,
0,
1,
]);
return this;
}
invert() {
mat4.invert(this.matrix, this.matrix);
return this;
}
identity() {
mat4.identity(this.matrix);
return this;
}
//-----------
apply(typedArray, offset = 0, nbIterations = -1) {
if (areMatricesEqual(IDENTITY, this.matrix)) {
// Make sure we can chain apply...
return this;
}
const size =
nbIterations === -1 ? typedArray.length : offset + nbIterations * 3;
for (let i = offset; i < size; i += 3) {
vec3.set(this.tmp, typedArray[i], typedArray[i + 1], typedArray[i + 2]);
vec3.transformMat4(this.tmp, this.tmp, this.matrix);
typedArray[i] = this.tmp[0];
typedArray[i + 1] = this.tmp[1];
typedArray[i + 2] = this.tmp[2];
}
// Make sure we can chain apply...
return this;
}
getMatrix() {
return this.matrix;
}
setMatrix(mat4x4) {
if (!!mat4x4 && mat4x4.length === 16) {
mat4.copy(this.matrix, mat4x4);
}
return this;
}
}
function buildFromDegree() {
return new Transform(true);
}
function buildFromRadian() {
return new Transform(false);
}
export default {
buildFromDegree,
buildFromRadian,
};
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