/**
* Multiply the current matrix with a rotation matrix.
*
* \param angle angle of rotation, in degrees.
* \param x rotation vector x coordinate.
* \param y rotation vector y coordinate.
* \param z rotation vector z coordinate.
*
* \sa glRotatef().
*
* Flushes the vertices and calls _math_matrix_rotate() with the top-most
* matrix in the current stack and the given parameters. Marks
* __GLcontextRec::NewState with the dirty stack flag.
*/
void GLAPIENTRY
_mesa_Rotatef( GLfloat angle, GLfloat x, GLfloat y, GLfloat z )
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
if (angle != 0.0F) {
_math_matrix_rotate( ctx->CurrentStack->Top, angle, x, y, z);
ctx->NewState |= ctx->CurrentStack->DirtyFlag;
}
}
/**
* Multiply the current matrix with a rotation matrix.
*
* \param angle angle of rotation, in degrees.
* \param x rotation vector x coordinate.
* \param y rotation vector y coordinate.
* \param z rotation vector z coordinate.
*
* \sa glRotatef().
*
* Flushes the vertices and calls _math_matrix_rotate() with the top-most
* matrix in the current stack and the given parameters. Marks
* __struct gl_contextRec::NewState with the dirty stack flag.
*/
void GLAPIENTRY
_mesa_Rotatef( GLfloat angle, GLfloat x, GLfloat y, GLfloat z )
{
GET_CURRENT_CONTEXT(ctx);
FLUSH_VERTICES(ctx, 0);
if (angle != 0.0F) {
_math_matrix_rotate( ctx->CurrentStack->Top, angle, x, y, z);
ctx->NewState |= ctx->CurrentStack->DirtyFlag;
}
}
void
cogl_matrix_rotate (CoglMatrix *matrix,
float angle,
float x,
float y,
float z)
{
#ifndef USE_MESA_MATRIX_API
CoglMatrix rotation;
CoglMatrix result;
float c, s;
angle *= G_PI / 180.0f;
c = cosf (angle);
s = sinf (angle);
rotation.xx = x * x * (1.0f - c) + c;
rotation.yx = y * x * (1.0f - c) + z * s;
rotation.zx = x * z * (1.0f - c) - y * s;
rotation.wx = 0.0f;
rotation.xy = x * y * (1.0f - c) - z * s;
rotation.yy = y * y * (1.0f - c) + c;
rotation.zy = y * z * (1.0f - c) + x * s;
rotation.wy = 0.0f;
rotation.xz = x * z * (1.0f - c) + y * s;
rotation.yz = y * z * (1.0f - c) - x * s;
rotation.zz = z * z * (1.0f - c) + c;
rotation.wz = 0.0f;
rotation.xw = 0.0f;
rotation.yw = 0.0f;
rotation.zw = 0.0f;
rotation.ww = 1.0f;
cogl_matrix_multiply (&result, matrix, &rotation);
*matrix = result;
#else
_math_matrix_rotate (matrix, angle, x, y, z);
#endif
_COGL_MATRIX_DEBUG_PRINT (matrix);
}