Ejemplo n.º 1
0
/**
 * 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;
   }
}
Ejemplo n.º 2
0
/**
 * 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;
    }
}
Ejemplo n.º 3
0
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);
}