GLES / Java Collada（.dae）骨架导入

Question

I'm trying to extract the skeleton from the collada .dae file format. I am able to get the final child node positions properly as well as the root node however the rest of the nodes appear to be incorrect.

Root(Good) -> Child(Sometimes Good/Sometimes Bad) -> ... -> Final Child(Good)

As you can see by the images, some of the joins are in the right spot but don't seem to connect properly, other joints are just flat out wrong, and the final joints like the head, finder tips, feet are correct. I think I'm on the right path but am unsure where to look to figure out whats causing the issue.

Here is the code I'm using to get the joint global matrices.

public final float[] getGlobalMatrix() {
        if (mParent != null) {
            Matrix.multiplyMM(mMatrix, 0, mParent.getMatrix(), 0, mLocalBoneTransformMatrix, 0);
        } else {
            final float[] tmp = new float[16];
            Matrix.setIdentityM(tmp, 0);
            Matrix.multiplyMM(mMatrix, 0, tmp, 0, mLocalBoneTransformMatrix, 0);
        }
        return mMatrix;
    }

I'm rendering this in GLEs2.0 so I'm converting the matrices I read in from the collada file using the following method.

private static float[] convertToGLESMatrix(final float[] colladaMatrix) {
        final float[] result = new float[16];
        result[ 0] = colladaMatrix[ 0];
        result[ 1] = colladaMatrix[ 4];
        result[ 2] = colladaMatrix[ 8];
        result[ 3] = colladaMatrix[12];

        result[ 4] = colladaMatrix[ 1];
        result[ 5] = colladaMatrix[ 5];
        result[ 6] = colladaMatrix[ 9];
        result[ 7] = colladaMatrix[13];

        result[ 8] = colladaMatrix[ 2];
        result[ 9] = colladaMatrix[ 6];
        result[10] = colladaMatrix[10];
        result[11] = colladaMatrix[14];

        result[12] = colladaMatrix[ 3];
        result[13] = colladaMatrix[ 7];
        result[14] = colladaMatrix[11];
        result[15] = colladaMatrix[15];
        return result;
    }

This seems to be working fine I just thought Id'e mention it just in case it was an issue.

Answer 1

事实证明，我的draw函数正在递归循环中通过引用传递一些数据，并对其进行更新导致了问题。