Android development-OpenGL ES rotating glRotatef

1. Rotation function:

GlRotatef (float angle, float X, float Y, float Z)

Angle specifies the Rotation angle of an object. The X, Y, and Z parameters jointly determine the direction of the rotation axis.

That is, the glRotatef function rotates the angle of an object along the specified axis.

2. Rotation implementation method:

Float rotateTri;

Float rotateQuad;

// Rotate the triangle

Gl. glRotatef (rotateTri, 0.0f, 1.0f, 0.0f );

// Rotate the Quadrilateral

Gl. glRotatef (rotateQuad, 1.0f, 0.0f, 0.0f );

// In order to rotate continuously, the rotation angle needs to be constantly changed.

RotateTri + = 0.5f;

RotateQuad-= 0.5f;