Opengl es 打开Gl绕轴旋转矢量并滚动

在

opengl Es2

中，我按照下面的代码旋转相机（向前、向上和侧向）

但是，此方法将滚动引入视图中。如果我将其中一个（标题或俯仰）注释掉，则没有滚动

theading

和

tpitch

通常只有1或2度（或-1或-2度）

关于消除滚动有什么想法吗？

 //rotate heading
    this.rotate_XYZ(cam.right, tHeading, cam.up);
    this.rotate_XYZ(cam.forward, tHeading, cam.up);         
 //rotate pitch

    this.rotate_XYZ(cam.up, tPitch, cam.right);
    this.rotate_XYZ(cam.forward, tPitch, cam.right);    

public void rotate_XYZ(j3Vector sVector,float angle, j3Vector a){

Matrix.setIdentityM(this.mCameraRotateMatrix, 0);
Matrix.rotateM(this.mCameraRotateMatrix, 0, angle, a.x, a.y, a.z);

this.mRHS_Vector[0]=sVector.x;
this.mRHS_Vector[1]=sVector.y;
this.mRHS_Vector[2]=sVector.z;


Matrix.multiplyMV(this.mRESULT_Vector,0, mCameraRotateMatrix,0,this.mRHS_Vector, 0);

sVector.set(this.mRESULT_Vector[0],this.mRESULT_Vector[1],this.mRESULT_Vector[2]);

return; 


}

解决方案

向上旋转世界，也向上旋转凸轮

//rotate heading
this.rotate_XYZ(cam.right, tHeading, world.up);
this.rotate_XYZ(cam.forward, tHeading, world.up);         
this.rotate_XYZ(cam.up, tHeading, world.up);         

//旋转节距

this.rotate_XYZ(cam.up, tPitch, cam.right);
this.rotate_XYZ(cam.forward, tPitch, cam.right);    

public void rotate_XYZ(j3Vector sVector,float angle, j3Vector a){

 Matrix.setIdentityM(this.mCameraRotateMatrix, 0);
 Matrix.rotateM(this.mCameraRotateMatrix, 0, angle, a.x, a.y, a.z);

 this.mRHS_Vector[0]=sVector.x;
 this.mRHS_Vector[1]=sVector.y;
 this.mRHS_Vector[2]=sVector.z;


 Matrix.multiplyMV(this.mRESULT_Vector,0, mCameraRotateMatrix,0,this.mRHS_Vector, 0);

 sVector.set(this.mRESULT_Vector[0],this.mRESULT_Vector[1],this.mRESULT_Vector[2]);

 return; 


 }