def _parseModelNode(xmlSegments, xmlMaterials, lights, name, node):
"""
parses a model node and creates a model instance.
"""
params = {}
segments = []
sLights = []
for child in list(node):
if child.tag == "segment":
segmentName = child.get('name')
segment = loadXMLSegment(xmlSegments, segmentName)
# load additional attributes into the datatype (rotation,translation,..)
segment = _parseModelSegmentNode(xmlMaterials, lights, segment, child)
segments.append(segment)
elif child.tag == "state":
xmlParseStateParam(child, params)
elif child.tag == "light":
name = child.get('name')
for l in lights:
if l.name==name:
sLights.append(l)
break
else:
print "WARNING: unknown model tag '%s'" % child.tag
m = Model(segments=segments, params=params)
m.setLights(sLights)
return m
def _parseMaterialNode(name, node, xmlStateGroups):
"""
create a GLMaterial instance from xml node.
"""
params = {}
textures = []
for child in list(node):
if child.tag == "state":
xmlParseStateParam(child, params)
elif child.tag == "stateGroup":
xmlParseStateGroupParam(child, params, xmlStateGroups)
elif child.tag == "texture":
texName = child.get('image')
tex = ImageTexture(texName)
wrapMode = str(child.get('wrapping'))
if wrapMode=="repeat":
tex.wrapMode = gl.GL_REPEAT
elif wrapMode=="clamp":
tex.wrapMode = gl.GL_CLAMP
tex.brightness = xmlFloat(child.get('brightness'), tex.brightness)
tex.contrast = xmlFloat(child.get('contrast'), tex.contrast)
tex.colfac = xmlFloat(child.get('colfac'), tex.colfac)
tex.norfac = xmlFloat(child.get('norfac'), tex.norfac)
tex.warpfac = xmlFloat(child.get('warpfac'), tex.warpfac)
tex.dispfac = xmlFloat(child.get('dispfac'), tex.dispfac)
tex.col = xmlFloatTuple(child.get('col'),
default=tex.col)
tex.rgbCol = xmlFloatTuple(child.get('rgbCol'),
default=tex.rgbCol)
tex.useMipMap = xmlBool(child.get('useMipMap'), tex.useMipMap)
tex.noRGB = xmlBool(child.get('noRGB'), tex.noRGB)
tex.stencil = xmlBool(child.get('stencil'), tex.stencil)
tex.neg = xmlBool(child.get('neg'), tex.neg)
tex.tangentSpace = xmlBool(child.get('tangentSpace'), tex.tangentSpace)
tex.setBlendMode(child.get('blendMode'))
tex.setMapInput(child.get('mapInput'))
tex.setMapping(child.get('mapping'))
tex.setMapTo(xmlStringList(child.get('mapTo'),
default=['col']))
if tex.useMipMap:
# mipmapping filter mode
tex.minFilterMode = gl.GL_LINEAR_MIPMAP_LINEAR
textures.append(tex)
params['textures'] = textures
mat = GLMaterial(params)
return mat
def xmlParseStateGroup(node):
params = {}
name = node.get('name')
dynamic = xmlBool(node.get('dynamic'), False)
for child in list(node):
if child.tag!="state": continue
xmlParseStateParam(child, params)
return GLStateGroup(params, name, dynamic)
def _parseLightNode(node, xmlStateGroups):
"""
parses a light node and creates a model instance.
"""
params = { 'name': node.get('name') }
for child in list(node):
if child.tag == "state":
xmlParseStateParam(child, params)
elif child.tag == "stateGroup":
xmlParseStateGroupParam(child, params, xmlStateGroups)
else:
print "WARNING: unknown light tag '%s'." % child.tag
return Light(params)
def _parseSegmentNode(name, node, xmlStateGroups):
"""
parses a segment node and creates a segment instance.
"""
segmentParams = {}
for child in list(node):
# parse vertices
if child.tag == "vertices":
_parseSegmentVertices(child, segmentParams)
# parse faces
elif child.tag == "faces":
_parseSegmentFaces(child, segmentParams, xmlStateGroups)
# parse evaluators
elif child.tag == "evaluators":
_parseSegmentEvaluators(child, segmentParams, xmlStateGroups)
# parse nurbs
elif child.tag == "nurbs":
_parseSegmentNurbs(child, segmentParams, xmlStateGroups)
elif child.tag == "state":
xmlParseStateParam( child, segmentParams )
elif child.tag == "stateGroup":
xmlParseStateGroupParam(child, segmentParams, xmlStateGroups)
elif child.tag == "vertexParam":
xmlParseVertexParam( child, segmentParams , xmlStateGroups)
else:
print "WARNING: XML: unknown tag '%s'" % child.tag
try:
segmentCls = segmentParams['cls']
except:
print "WARNING: no segment class sepecified!"
return None
return (name, segmentParams, segmentCls)
from xml_material import loadXMLMaterial
from core.material import GLMaterial
from utils.util import unique
from xml_parser.xml_state import xmlParseStateParam, xmlParseVertexParam
def _parseModelSegmentNode(xmlMaterials, lights, (segmentName, segmentParams, segmentCls), node):
"""
parse segment configuration specified by model.
"""
baseImage = None
for child in list(node):
if child.tag == "state":
xmlParseStateParam( child, segmentParams )
elif child.tag == "vertexParam":
xmlParseVertexParam( child, segmentParams )
elif child.tag == "image":
baseImage = str(child.get('val'))
elif child.tag == "material":
material = loadXMLMaterial(xmlMaterials, str(child.get('name')))
else:
print "WARNING: unknown model segment tag '%s'" % child.tag
if material == None:
# segment needs material
material = GLMaterial()
segmentParams['material'] = material
def _parseSegmentFaces(node, segmentParams, xmlStateGroups):
segmentTypes = { 'Points': (PointSegment, gl.GL_POINTS, 1)
, 'Lines': (LineSegment, gl.GL_LINES, 2)
, 'LineStrip': (LineSegment, gl.GL_LINE_STRIP, 2)
, 'LineLoop': (LineSegment, gl.GL_LINE_LOOP, 2)
, 'Triangles': (TriangleSegment, gl.GL_TRIANGLES, 3)
, 'TriangleStrip': (TriangleSegment, gl.GL_TRIANGLE_STRIP, 3)
, 'TriangleFan': (TriangleSegment, gl.GL_TRIANGLE_FAN, 3)
, 'Quads': (QuadSegment, gl.GL_QUADS, 4)
, 'QuadStrip': (QuadSegment, gl.GL_QUAD_STRIP, 4)
, 'Polygon': (PolygonSegment, gl.GL_POLYGON, -1)
}
try:
segmentCls, primitive, faceVertices = segmentTypes[node.get('primitive')]
except:
print "WARNING: unknown faces type '%s'" % node.get('primitive')
return
segmentParams['cls'] = segmentCls
segmentParams['primitive'] = primitive
faces = []
indexes = []
numIndexes = 0
for fNode in list(node):
if fNode.tag != "face": continue
faceParams = {}
for iNode in list(fNode):
if iNode.tag == "i":
if faceVertices==1 or faceVertices==2:
i = xmlIntList(iNode.get('val'))
if i!=None:
indexes += i
numIndexes += len(i)
else:
faceParams['i'] = xmlIntListC(iNode.get('val'))
numIndexes += faceVertices
elif iNode.tag == "state":
if faceVertices==1 or faceVertices==2:
xmlParseStateParam( iNode, segmentParams )
else:
xmlParseStateParam( iNode, faceParams )
elif iNode.tag == "stateGroup":
if faceVertices==1 or faceVertices==2:
xmlParseStateGroupParam( iNode, segmentParams, xmlStateGroups )
else:
xmlParseStateGroupParam( iNode, faceParams, xmlStateGroups )
elif iNode.tag == "uv":
faceParams['uv'] = xmlFloatTupleListC(iNode.get('val'))
elif iNode.tag == "col":
faceParams['col'] = xmlFloatTupleListC(iNode.get('val'))
elif iNode.tag == "nor":
faceParams['nor'] = xmlFloatTupleListC(iNode.get('val'))
if not (faceVertices==1 or faceVertices==2):
faces.append(VArrayFace(faceParams))
if faceVertices==1 or faceVertices==2:
segmentParams['indexes'] = indexes
segmentParams['numIndexes'] = numIndexes
segmentParams['faces'] = (faces, primitive, faceVertices)
def _parseSegmentNurbs(node, segmentParams, xmlStateGroups):
evaluators = []
vertexEvaluator = None
normalEvaluator = None
needsNormals = False
segmentParams['cls'] = EvaluatorSegment
for child in list(node):
if child.tag != "nurb":
continue
target = child.get('target', 'vertex')
uKnot = [0.0]*4 + [1.0]*4
vKnot = [0.0]*4 + [1.0]*4
params = {}
for n in list(child):
if n.tag == "u":
uKnot = xmlFloatListC(n.get('knot'), uKnot)
elif n.tag == "v":
vKnot = xmlFloatListC(n.get('knot'), vKnot)
elif n.tag == "ctrls":
params['ctrls'] = _parseEvaluatorCtrls(n)
elif n.tag == "state":
xmlParseStateParam(n, params)
elif child.tag == "stateGroup":
xmlParseStateGroupParam(n, params, xmlStateGroups)
elif n.tag == "vertexParam":
xmlParseVertexParam( n, params , xmlStateGroups)
try:
params['ctrls'][0][0][0]
isCurve = False
except:
isCurve = True
params['tolerance'] = xmlFloat(child.get('tolerance'), 25.0)
if isCurve:
params['target'] = _curveTargets()[target]
params['knots'] = [uKnot]
nurbCls = NURBCurveEvaluator
else:
params['target'] = _patchTargets()[target]
params['knots'] = [uKnot, vKnot]
nurbCls = NURBPatchEvaluator
evaluator = nurbCls(params)
if target=="vertex" or target=="vertex4":
vertexEvaluator = evaluator
# curves dont need normals
needsNormals = not isCurve
if target=="normal":
normalEvaluator = evaluator
evaluators.append(evaluator)
if needsNormals and normalEvaluator==None and vertexEvaluator!=None:
vertexEvaluator.generateNormals = True
segmentParams['evaluators'] = evaluators
def _parseSegmentEvaluators(node, segmentParams, xmlStateGroups):
evaluators = []
def _readParam(n, name, param):
param.min = xmlFloat(n.get('min'), 0.0)
param.max = xmlFloat(n.get('max'), 1.0)
param.steps = xmlInt(n.get('steps'), 20)
vertexEvaluator = None
normalEvaluator = None
needsNormals = False
for child in list(node):
if child.tag != "evaluator":
continue
segmentParams['cls'] = EvaluatorSegment
evalParams = {}
target = child.get('target', 'vertex')
u = EvalParam("u")
v = EvalParam("v")
for n in list(child):
if n.tag == "u":
_readParam(n, n.tag, u)
elif n.tag == "v":
_readParam(n, n.tag, v)
elif n.tag == "ctrls":
evalParams['ctrls'] = _parseEvaluatorCtrls(n)
elif n.tag == "state":
xmlParseStateParam(n, evalParams)
elif child.tag == "stateGroup":
xmlParseStateGroupParam(n, evalParams, xmlStateGroups)
elif n.tag == "vertexParam":
xmlParseVertexParam( n, evalParams , xmlStateGroups)
try:
evalParams['ctrls'][0][0][0]
isCurve = False
except:
isCurve = True
if isCurve:
evalParams['target'] = _curveTargets()[target]
evalParams['params'] = [u]
evaluatorCls = CurveEvaluator
else:
evalParams['target'] = _patchTargets()[target]
evalParams['params'] = [u, v]
evaluatorCls = PatchEvaluator
evaluator = evaluatorCls(evalParams)
if target=="vertex" or target=="vertex4":
vertexEvaluator = evaluator
# curves dont need normals
needsNormals = not isCurve
if target=="normal":
normalEvaluator = evaluator
evaluators.append(evaluator)
if needsNormals and normalEvaluator==None and vertexEvaluator!=None:
vertexEvaluator.generateNormals = True
segmentParams['evaluators'] = evaluators
