| """glu[Un]Project[4] convenience wrappers""" |
| from OpenGL.raw import GLU as _simple |
| from OpenGL import GL |
| from OpenGL.lazywrapper import lazy as _lazy |
| import ctypes |
| POINTER = ctypes.POINTER |
|
|
| @_lazy( _simple.gluProject ) |
| def gluProject( baseFunction, objX, objY, objZ, model=None, proj=None, view=None ): |
| """Convenience wrapper for gluProject |
| |
| Automatically fills in the model, projection and viewing matrices |
| if not provided. |
| |
| returns (winX,winY,winZ) doubles |
| """ |
| if model is None: |
| model = GL.glGetDoublev( GL.GL_MODELVIEW_MATRIX ) |
| if proj is None: |
| proj = GL.glGetDoublev( GL.GL_PROJECTION_MATRIX ) |
| if view is None: |
| view = GL.glGetIntegerv( GL.GL_VIEWPORT ) |
| winX = _simple.GLdouble( 0.0 ) |
| winY = _simple.GLdouble( 0.0 ) |
| winZ = _simple.GLdouble( 0.0 ) |
| result = baseFunction( |
| objX,objY,objZ, |
| model,proj,view, |
| winX,winY,winZ, |
| ) |
| |
| |
| if result is not None and result != _simple.GLU_TRUE: |
| raise ValueError( """Projection failed!""" ) |
| return winX.value, winY.value, winZ.value |
|
|
| @_lazy( _simple.gluUnProject ) |
| def gluUnProject( baseFunction, winX, winY, winZ, model=None, proj=None, view=None ): |
| """Convenience wrapper for gluUnProject |
| |
| Automatically fills in the model, projection and viewing matrices |
| if not provided. |
| |
| returns (objX,objY,objZ) doubles |
| """ |
| if model is None: |
| model = GL.glGetDoublev( GL.GL_MODELVIEW_MATRIX ) |
| if proj is None: |
| proj = GL.glGetDoublev( GL.GL_PROJECTION_MATRIX ) |
| if view is None: |
| view = GL.glGetIntegerv( GL.GL_VIEWPORT ) |
| objX = _simple.GLdouble( 0.0 ) |
| objY = _simple.GLdouble( 0.0 ) |
| objZ = _simple.GLdouble( 0.0 ) |
| result = baseFunction( |
| winX,winY,winZ, |
| model,proj,view, |
| ctypes.byref(objX),ctypes.byref(objY),ctypes.byref(objZ), |
| ) |
| if not result: |
| raise ValueError( """Projection failed!""" ) |
| return objX.value, objY.value, objZ.value |
| @_lazy( _simple.gluUnProject4 ) |
| def gluUnProject4( |
| baseFunction, |
| winX, winY, winZ, clipW, |
| model=None, proj=None, view=None, |
| near=0.0, far=1.0 |
| ): |
| """Convenience wrapper for gluUnProject |
| |
| Automatically fills in the model, projection and viewing matrices |
| if not provided. |
| |
| returns (objX,objY,objZ) doubles |
| """ |
| if model is None: |
| model = GL.glGetDoublev( GL.GL_MODELVIEW_MATRIX ) |
| if proj is None: |
| proj = GL.glGetDoublev( GL.GL_PROJECTION_MATRIX ) |
| if view is None: |
| view = GL.glGetIntegerv( GL.GL_VIEWPORT ) |
| objX = _simple.GLdouble( 0.0 ) |
| objY = _simple.GLdouble( 0.0 ) |
| objZ = _simple.GLdouble( 0.0 ) |
| objW = _simple.GLdouble( 0.0 ) |
| result = baseFunction( |
| winX,winY,winZ, |
| model,proj,view, |
| ctypes.byref(objX),ctypes.byref(objY),ctypes.byref(objZ),ctypes.byref(objW) |
| ) |
| if not result: |
| raise ValueError( """Projection failed!""" ) |
| return objX.value, objY.value, objZ.value, objW.value |
|
|
| __all__ = ( |
| 'gluProject', |
| 'gluUnProject', |
| 'gluUnProject4', |
| ) |
|
|
