2 Add material to support overhang or remove material at the overhang angle.
6 from __future__ import absolute_import
7 #Init has to be imported first because it has code to workaround the python bug where relative imports don't work if the module is imported as a main module.
10 from fabmetheus_utilities.geometry.creation import solid
11 from fabmetheus_utilities.geometry.geometry_utilities import evaluate
12 from fabmetheus_utilities.geometry.geometry_utilities import matrix
13 from fabmetheus_utilities.vector3 import Vector3
16 __author__ = 'Enrique Perez (perez_enrique@yahoo.com)'
17 __credits__ = 'Art of Illusion <http://www.artofillusion.org/>'
18 __date__ = '$Date: 2008/02/05 $'
19 __license__ = 'GNU Affero General Public License http://www.gnu.org/licenses/agpl.html'
22 globalExecutionOrder = 200
25 # http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=269576
26 # http://www.opengl.org/resources/code/samples/sig99/advanced99/notes/node159.html
27 # m.a00 = -2 * norm.x * norm.x + 1;
28 # m.a10 = -2 * norm.y * norm.x;
29 # m.a20 = -2 * norm.z * norm.x;
32 # m.a01 = -2 * norm.x * norm.y;
33 # m.a11 = -2 * norm.y * norm.y + 1;
34 # m.a21 = -2 * norm.z * norm.y;
37 # m.a02 = -2 * norm.x * norm.z;
38 # m.a12 = -2 * norm.y * norm.z;
39 # m.a22 = -2 * norm.z * norm.z + 1;
42 # m.a03 = -2 * norm.x * d;
43 # m.a13 = -2 * norm.y * d;
44 # m.a23 = -2 * norm.z * d;
47 # normal = unit_vector(normal[:3])
48 # M = numpy.identity(4)
49 # M[:3, :3] -= 2.0 * numpy.outer(normal, normal)
50 # M[:3, 3] = (2.0 * numpy.dot(point[:3], normal)) * normal
52 def flipPoints(elementNode, points, prefix):
54 derivation = FlipDerivation(elementNode, prefix)
56 point.setToVector3(point - 2.0 * derivation.axis.dot(point - derivation.origin) * derivation.axis)
58 def getFlippedLoop(elementNode, loop, prefix):
60 flipPoints(elementNode, loop, prefix)
61 if getShouldReverse(elementNode, prefix):
65 def getManipulatedGeometryOutput(elementNode, geometryOutput, prefix):
66 'Get equated geometryOutput.'
67 flipPoints(elementNode, matrix.getVertexes(geometryOutput), prefix)
70 def getManipulatedPaths(close, elementNode, loop, prefix, sideLength):
72 return [getFlippedLoop(elementNode, loop, prefix)]
74 def getNewDerivation(elementNode, prefix, sideLength):
76 return FlipDerivation(elementNode, prefix)
78 def getShouldReverse(elementNode, prefix):
79 'Determine if the loop should be reversed.'
80 return evaluate.getEvaluatedBoolean(True, elementNode, prefix + 'reverse')
82 def processElementNode(elementNode):
83 'Process the xml element.'
84 solid.processElementNodeByFunctionPair(elementNode, getManipulatedGeometryOutput, getManipulatedPaths)
88 "Class to hold flip variables."
89 def __init__(self, elementNode, prefix):
91 self.origin = evaluate.getVector3ByPrefix(Vector3(), elementNode, prefix + 'origin')
92 self.axis = evaluate.getVector3ByPrefix(Vector3(1.0, 0.0, 0.0), elementNode, prefix + 'axis').getNormalized()