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
def gluGetTessProperty(baseFunction, tess, which, data=None):
"""Retrieve single double for a tessellator property"""
if data is None:
data = _simple.GLdouble(0.0)
baseFunction(tess, which, data)
return data.value
else:
return baseFunction(tess, which, data)
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,
)
# On Ubuntu 9.10 we see a None come out of baseFunction,
# despite it having a return-type specified of GLint!
if result is not None and result != _simple.GLU_TRUE:
raise ValueError("""Projection failed!""")
return winX.value, winY.value, winZ.value
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 not result:
raise ValueError("""Projection failed!""")
return winX.value, winY.value, winZ.value