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