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"""Exceptional cases that need some extra wrapping"""
from OpenGL import arrays
from OpenGL.arrays.arraydatatype import GLfloatArray
from OpenGL.lazywrapper import lazy as _lazy
from OpenGL.GL.VERSION import GL_1_1 as full
from OpenGL.raw.GL import _errors
from OpenGL._bytes import bytes
from OpenGL import _configflags
from OpenGL._null import NULL as _NULL
import ctypes
__all__ = [
'glBegin',
'glCallLists',
'glColor',
'glDeleteTextures',
'glEnd',
'glMap1d',
'glMap1f',
'glMap2d',
'glMap2f',
'glMaterial',
'glRasterPos',
'glTexParameter',
'glVertex',
'glAreTexturesResident',
]
glRasterPosDispatch = {
2: full.glRasterPos2d,
3: full.glRasterPos3d,
4: full.glRasterPos4d,
}
if _configflags.ERROR_CHECKING:
@_lazy( full.glBegin )
def glBegin( baseFunction, mode ):
"""Begin GL geometry-definition mode, disable automatic error checking"""
_errors._error_checker.onBegin( )
return baseFunction( mode )
@_lazy( full.glEnd )
def glEnd( baseFunction ):
"""Finish GL geometry-definition mode, re-enable automatic error checking"""
_errors._error_checker.onEnd( )
return baseFunction( )
else:
glBegin = full.glBegin
glEnd = full.glEnd
@_lazy( full.glDeleteTextures )
def glDeleteTextures( baseFunction, size, array=_NULL ):
"""Delete specified set of textures
If array is *not* passed then `size` must be a `GLuintArray`
compatible object which can be sized using `arraySize`, the
result of which will be used as size.
"""
if array is _NULL:
ptr = arrays.GLuintArray.asArray( size )
size = arrays.GLuintArray.arraySize( ptr )
else:
ptr = array
return baseFunction( size, ptr )
def glMap2( baseFunction, arrayType ):
def glMap2( target, u1, u2, v1, v2, points):
"""glMap2(target, u1, u2, v1, v2, points[][][]) -> None
This is a completely non-standard signature which doesn't allow for most
of the funky uses with strides and the like, but it has been like this for
a very long time...
"""
ptr = arrayType.asArray( points )
uorder,vorder,vstride = arrayType.dimensions( ptr )
ustride = vstride*vorder
return baseFunction(
target,
u1, u2,
ustride, uorder,
v1, v2,
vstride, vorder,
ptr
)
glMap2.__name__ = baseFunction.__name__
glMap2.baseFunction = baseFunction
return glMap2
glMap2d = glMap2( full.glMap2d, arrays.GLdoubleArray )
glMap2f = glMap2( full.glMap2f, arrays.GLfloatArray )
try:
del glMap2
except NameError as err:
pass
def glMap1( baseFunction, arrayType ):
def glMap1(target,u1,u2,points):
"""glMap1(target, u1, u2, points[][][]) -> None
This is a completely non-standard signature which doesn't allow for most
of the funky uses with strides and the like, but it has been like this for
a very long time...
"""
ptr = arrayType.asArray( points )
dims = arrayType.dimensions( ptr )
uorder = dims[0]
ustride = dims[1]
return baseFunction( target, u1,u2,ustride,uorder, ptr )
glMap1.__name__ == baseFunction.__name__
glMap1.baseFunction = baseFunction
return glMap1
glMap1d = glMap1( full.glMap1d, arrays.GLdoubleArray )
glMap1f = glMap1( full.glMap1f, arrays.GLfloatArray )
try:
del glMap1
except NameError as err:
pass
def glRasterPos( *args ):
"""Choose glRasterPosX based on number of args"""
if len(args) == 1:
# v form...
args = args[0]
function = glRasterPosDispatch[ len(args) ]
return function( *args )
glVertexDispatch = {
2: full.glVertex2d,
3: full.glVertex3d,
4: full.glVertex4d,
}
def glVertex( *args ):
"""Choose glVertexX based on number of args"""
if len(args) == 1:
# v form...
args = args[0]
return glVertexDispatch[ len(args) ]( *args )
@_lazy( full.glCallLists )
def glCallLists( baseFunction, lists, *args ):
"""glCallLists( bytes( lists ) or lists[] ) -> None
Restricted version of glCallLists, takes a string or a GLuint compatible
array data-type and passes into the base function.
"""
if not len(args):
if isinstance( lists, bytes ):
return baseFunction(
len(lists),
full.GL_UNSIGNED_BYTE,
ctypes.c_void_p(arrays.GLubyteArray.dataPointer( lists )),
)
ptr = arrays.GLuintArray.asArray( lists )
size = arrays.GLuintArray.arraySize( ptr )
return baseFunction(
size,
full.GL_UNSIGNED_INT,
ctypes.c_void_p( arrays.GLuintArray.dataPointer(ptr))
)
return baseFunction( lists, *args )
def glTexParameter( target, pname, parameter ):
"""Set a texture parameter, choose underlying call based on pname and parameter"""
if isinstance( parameter, float ):
return full.glTexParameterf( target, pname, parameter )
elif isinstance( parameter, int ):
return full.glTexParameteri( target, pname, parameter )
else:
value = GLfloatArray.asArray( parameter, full.GL_FLOAT )
return full.glTexParameterfv( target, pname, value )
def glMaterial( faces, constant, *args ):
"""glMaterial -- convenience function to dispatch on argument type
If passed a single argument in args, calls:
glMaterialfv( faces, constant, args[0] )
else calls:
glMaterialf( faces, constant, *args )
"""
if len(args) == 1:
arg = GLfloatArray.asArray( args[0] )
if arg is None:
raise ValueError( """Null value in glMaterial: %s"""%(args,) )
return full.glMaterialfv( faces, constant, arg )
else:
return full.glMaterialf( faces, constant, *args )
glColorDispatch = {
3: full.glColor3fv,
4: full.glColor4fv,
}
def glColor( *args ):
"""glColor*f* -- convenience function to dispatch on argument type
dispatches to glColor3f, glColor2f, glColor4f, glColor3f, glColor2f, glColor4f
depending on the arguments passed...
"""
arglen = len(args)
if arglen == 1:
arg = arrays.GLfloatArray.asArray( args[0] )
function = glColorDispatch[arrays.GLfloatArray.arraySize( arg )]
return function( arg )
elif arglen == 2:
return full.glColor2d( *args )
elif arglen == 3:
return full.glColor3d( *args )
elif arglen == 4:
return full.glColor4d( *args )
else:
raise ValueError( """Don't know how to handle arguments: %s"""%(args,))
# Rectagle coordinates,
@_lazy( full.glAreTexturesResident )
def glAreTexturesResident( baseFunction, *args ):
"""Allow both Pythonic and C-style calls to glAreTexturesResident
glAreTexturesResident( arrays.GLuintArray( textures) )
or
glAreTexturesResident( int(n), arrays.GLuintArray( textures), arrays.GLuboolean( output) )
or
glAreTexturesResident( int(n), arrays.GLuintArray( textures) )
returns the output arrays.GLubooleanArray
"""
if len(args) == 1:
# Pythonic form...
textures = args[0]
textures = arrays.GLuintArray.asArray( textures )
n = arrays.GLuintArray.arraySize(textures)
output = arrays.GLbooleanArray.zeros( (n,))
elif len(args) == 2:
try:
n = int( args[0] )
except TypeError:
textures = args[0]
textures = arrays.GLuintArray.asArray( textures )
n = arrays.GLuintArray.arraySize(textures)
output = args[1]
output = arrays.GLbooleanArray.asArray( output )
else:
textures = args[1]
textures = arrays.GLuintArray.asArray( textures )
output = arrays.GLbooleanArray.zeros( (n,))
elif len(args) == 3:
n,textures,output = args
textures = arrays.GLuintArray.asArray( textures )
output = arrays.GLbooleanArray.asArray( output )
else:
raise TypeError( """Expected 1 to 3 arguments to glAreTexturesResident""" )
texturePtr = arrays.GLuintArray.typedPointer( textures )
outputPtr = arrays.GLbooleanArray.typedPointer( output )
result = baseFunction( n, texturePtr, outputPtr )
if result:
# weirdness of the C api, doesn't produce values if all are true
for i in range(len(output)):
output[i] = 1
return output
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