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export wrapSkinnedModel util #704

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export wrapSkinnedModel util #704

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41 changes: 24 additions & 17 deletions src/Model.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -30,10 +30,7 @@ class Model extends BaseObject {
const position = layer.coordinateToVector3(coordinate, z);
this.getObject3d().position.copy(position);

this.wrapSkinnedMesh(model, model);
model.traverse((child) => {
this.wrapSkinnedMesh(child, model);
});
wrapSkinnedModel(model);

this.type = 'Model';
}
Expand All @@ -46,17 +43,27 @@ class Model extends BaseObject {
c.z = altitude;
return c;
}
}

export default Model;

wrapSkinnedMesh(mesh, rootObject3D) {
export function wrapSkinnedModel(model: THREE.Object3D) {
if (!model || !(model instanceof THREE.Object3D)) {
return;
}
function wrapSkinnedMesh(mesh, rootObject3D) {
if (!mesh.isSkinnedMesh) {
return;
}
mesh.updateMatrixWorld = wrapUpdateMatrixWorld(mesh.updateMatrixWorld, rootObject3D).bind(mesh);
mesh.skeleton.update = wrapSkeletonUpdate(mesh.skeleton.update, rootObject3D).bind(mesh.skeleton);
}
}

export default Model;
wrapSkinnedMesh(model, model);
model.traverse((child) => {
wrapSkinnedMesh(child, model);
});
}

function wrapSkeletonUpdate(fn, rootObject3D) {
const _offsetMatrix = /*@__PURE__*/ new THREE.Matrix4();
Expand All @@ -66,24 +73,24 @@ function wrapSkeletonUpdate(fn, rootObject3D) {
const matrixWorld = rootObject3D.matrixWorld;

const bones = this.bones;
const boneInverses = this.boneInverses;
const boneMatrices = this.boneMatrices;
const boneTexture = this.boneTexture;
const boneInverses = this.boneInverses;
const boneMatrices = this.boneMatrices;
const boneTexture = this.boneTexture;

//写入boneTexture之前，从boneMatrices中去掉 root translation
//重新计算 boneMatrices，不能直接减去 root translation，否则会有精度问题导致的绘制失真

for ( let i = 0, il = bones.length; i < il; i ++ ) {
for (let i = 0, il = bones.length; i < il; i++) {

const matrix = bones[ i ] ? bones[ i ].matrixWorld : _identityMatrix;
const matrix = bones[i] ? bones[i].matrixWorld : _identityMatrix;

_offsetMatrix.multiplyMatrices( matrix, boneInverses[ i ] );
_offsetMatrix.multiplyMatrices(matrix, boneInverses[i]);
_offsetMatrix.elements[12] -= matrixWorld.elements[12];
_offsetMatrix.elements[13] -= matrixWorld.elements[13];
_offsetMatrix.elements[14] -= matrixWorld.elements[14];
_offsetMatrix.toArray( boneMatrices, i * 16 );
_offsetMatrix.toArray(boneMatrices, i * 16);

}
}
}
}

Expand All @@ -93,9 +100,9 @@ function wrapUpdateMatrixWorld(fn, rootObject3D) {
fn.apply(this, arguments);
//从bindMatrixInverse中去掉 root translation
const matrixWorld = rootObject3D.matrixWorld;
if ( this.bindMode === (THREE.AttachedBindMode || 'attached')) {
if (this.bindMode === (THREE.AttachedBindMode || 'attached')) {
const bindMatrixInverse = this.bindMatrixInverse;
bindMatrixInverse.copy( this.matrixWorld );
bindMatrixInverse.copy(this.matrixWorld);
bindMatrixInverse.elements[12] -= matrixWorld.elements[12];
bindMatrixInverse.elements[13] -= matrixWorld.elements[13];
bindMatrixInverse.elements[14] -= matrixWorld.elements[14];
Expand Down
4 changes: 3 additions & 1 deletion src/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@ import Line from './Line';
import ExtrudeLine from './ExtrudeLine';
import ExtrudePolygon from './ExtrudePolygon';
import Model from './Model';
import { wrapSkinnedModel } from './Model';
import ExtrudeLineTrail from './ExtrudeLineTrail';
import ExtrudePolygons from './ExtrudePolygons';
import Point from './Point';
Expand Down Expand Up @@ -1793,7 +1794,8 @@ export {
getFetchDataActor,
BaseObjectTaskManager,
BaseObjectTask,
polyextrude
polyextrude,
wrapSkinnedModel
};

if (maptalks.registerWorkerAdapter) {
Expand Down