GLROTATE(3G) UNIX Programmer's Manual GLROTATE(3G)
glRotated, glRotatef - multiply the current matrix by a rotation matrix
void glRotated( GLdouble angle, GLdouble x, GLdouble y, GLdouble z ) void glRotatef( GLfloat angle, GLfloat x, GLfloat y, GLfloat z )
angle Specifies the angle of rotation, in degrees. x, y, z Specify the x, y, and z coordinates of a vector, respectively.
glRotate produces a rotation of angle degrees around the vector (x,y,z). The current matrix (see glMatrixMode) is multiplied by a rotation matrix with the product replacing the current matrix, as if glMultMatrix were called with the following matrix as its argument: | | x2(1-c) + c xy(1-c) - zs xz(1-c) + ys 0 | | | | yx(1-c) + zs y2(1-c) + c yz(1-c) - xs 0 | | | | xz(1-c) - ys yz(1-c) + xs z2(1-c) + c 0 | | 0 0 0 1 | | | | Where c = cos(angle), s = sin(angle), and ||( x,y,z )|| = 1 (if not, the GL will normalize this vector). If the matrix mode is either GL_MODELVIEW or GL_PROJECTION, all objects drawn after glRotate is called are rotated. Use glPushMatrix and glPopMatrix to save and restore the unro- tated coordinate system.
This rotation follows the right-hand rule, so if the vector (x,y,z) points toward the user, the rotation will be coun- terclockwise. MirOS BSD #10-current Printed 09.04.2016 1 GLROTATE(3G) UNIX Programmer's Manual GLROTATE(3G)
GL_INVALID_OPERATION is generated if glRotate is executed between the execution of glBegin and the corresponding exe- cution of glEnd.
glGet with argument GL_MATRIX_MODE glGet with argument GL_COLOR_MATRIX glGet with argument GL_MODELVIEW_MATRIX glGet with argument GL_PROJECTION_MATRIX glGet with argument GL_TEXTURE_MATRIX
glMatrixMode(3G), glMultMatrix(3G), glPushMatrix(3G), glScale(3G), glTranslate(3G) MirOS BSD #10-current Printed 09.04.2016 2
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