围绕其轴旋转形状，然后在OpenGL ES 2.0中平移形状

Question

我正在尝试围绕其中心（0,0,0）旋转三角形，然后将其翻译为（0.5,0.5,0）。但是，无论我在 rotateM 命令之前还是之后放置 translateM 命令，我仍然得到相同的结果，即转换为所述位置的三角形，旋转（轨道运行）约（0,0,0）。我看过网上发现了类似的帖子，但他们没有帮助。这是我的代码：

注意：我的三角形都以（0,0,0）为中心开始。

    Matrix.setIdentityM(mModelMatrix, 0);

    // *** transform shape before rendering

    Matrix.setRotateM(mRotationMatrix, 0, rx, -1.0f, 0, 0);
    Matrix.multiplyMM(mModelMatrix, 0, mRotationMatrix, 0, mModelMatrix, 0);        // rotate

    Matrix.setRotateM(mRotationMatrix, 0, ry, 0, -1.0f, 0);
    Matrix.multiplyMM(mModelMatrix, 0, mRotationMatrix, 0, mModelMatrix, 0);        // rotate

    Matrix.setRotateM(mRotationMatrix, 0, rz, 0, 0, -1.0f);
    Matrix.multiplyMM(mModelMatrix, 0, mRotationMatrix, 0, mModelMatrix, 0);        // rotate

    Matrix.translateM(mModelMatrix, 0, tx, ty, tz);                         // translate

    Matrix.multiplyMM(mvpMatrix, 0, mModelMatrix, 0, mvpMatrix, 0);         // world view


    // *** render

    // Add program to OpenGL environment
    GLES20.glUseProgram(mProgram);

    // get handle to vertex shader's vPosition member
    mPositionHandle = GLES20.glGetAttribLocation(mProgram, "vPosition");

    // Enable a handle to the triangle vertices
    GLES20.glEnableVertexAttribArray(mPositionHandle);

    // Prepare the triangle coordinate data
    GLES20.glVertexAttribPointer(mPositionHandle, COORDS_PER_VERTEX,
                                 GLES20.GL_FLOAT, false,
                                 vertexStride, vertexBuffer);

    // get handle to fragment shader's vColor member
    mColorHandle = GLES20.glGetUniformLocation(mProgram, "vColor");

    // Set color for drawing the triangle
    GLES20.glUniform4fv(mColorHandle, 1, color, 0);

    // get handle to shape's transformation matrix
    mMVPMatrixHandle = GLES20.glGetUniformLocation(mProgram, "uMVPMatrix");
    MyGL20Renderer.checkGlError("glGetUniformLocation");

    // Apply the projection and view transformation
    GLES20.glUniformMatrix4fv(mMVPMatrixHandle, 1, false, mvpMatrix, 0);
    MyGL20Renderer.checkGlError("glUniformMatrix4fv");

    // Draw the triangle
    GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, vertexCount);

    // Disable vertex array
    GLES20.glDisableVertexAttribArray(mPositionHandle);

任何建议都将不胜感激。