/// <summary>
/// Call this before render something.
/// </summary>
public void setView()
{
GL.glMatrixMode(GL.GL_MODELVIEW);
float[] viewmatrix =
{ //Remove the three '-' for non-inverted z-axis
maf_matrix[0], maf_matrix[4], -maf_matrix[8], 0,
maf_matrix[1], maf_matrix[5], -maf_matrix[9], 0,
maf_matrix[2], maf_matrix[6], -maf_matrix[10], 0,
-(maf_matrix[0] * maf_matrix[12] +
maf_matrix[1] * maf_matrix[13] +
maf_matrix[2] * maf_matrix[14]),
-(maf_matrix[4] * maf_matrix[12] +
maf_matrix[5] * maf_matrix[13] +
maf_matrix[6] * maf_matrix[14]),
//add a - like above for non-inverted z-axis
(maf_matrix[8] * maf_matrix[12] +
maf_matrix[9] * maf_matrix[13] +
maf_matrix[10] * maf_matrix[14]), 1
};
GL.glLoadMatrixf(viewmatrix);
}
/// <summary>
/// Rotate camera in local(camera) space
/// </summary>
public void rotateLocal(float deg, float x, float y, float z)
{
GL.glMatrixMode(GL.GL_MODELVIEW);
GL.glPushMatrix();
GL.glLoadMatrixf(maf_matrix);
GL.glRotatef(deg, x, y, z);
GL.glGetFloatv(GL.GL_MODELVIEW_MATRIX, maf_matrix);
GL.glPopMatrix();
}
/// <summary>
/// Rotate camera in world space
/// </summary>
public void rotateGlobal(float deg, float x, float y, float z)
{
float dx = x * maf_matrix[0] + y * maf_matrix[1] + z * maf_matrix[2];
float dy = x * maf_matrix[4] + y * maf_matrix[5] + z * maf_matrix[6];
float dz = x * maf_matrix[8] + y * maf_matrix[9] + z * maf_matrix[10];
GL.glMatrixMode(GL.GL_MODELVIEW);
GL.glPushMatrix();
GL.glLoadMatrixf(maf_matrix);
GL.glRotatef(deg, dx, dy, dz);
GL.glGetFloatv(GL.GL_MODELVIEW_MATRIX, maf_matrix);
GL.glPopMatrix();
}
