Revisions based on comments from Colon Pull request #43

scaffoldmaker/meshtypes/meshtype_3d_colon1.py

@@ -0,0 +1,141 @@
+"""
+Generates a 3-D colon mesh along the central line, with variable
+numbers of elements around, along and through wall, with
+variable radius and thickness along.
+"""
+
+from scaffoldmaker.meshtypes.meshtype_3d_haustra1 import MeshType_3d_haustra1, getColonHaustraSegmentInnerPoints
+from scaffoldmaker.meshtypes.scaffold_base import Scaffold_base
+from scaffoldmaker.utils.matrix import *
+from scaffoldmaker.utils.meshrefinement import MeshRefinement
+from scaffoldmaker.utils.tubemesh import *
+
+class MeshType_3d_colon1(Scaffold_base):
+    '''
+    Generates a 3-D colon mesh with variable numbers
+    of elements around, along the central line, and through wall.
+    The colon is created by a function that generates a haustra
+    segment and uses tubemesh to map the segment along a central
+    line profile.
+    '''
+    @staticmethod
+    def getName():
+        return '3D Colon 1'
+
+    @staticmethod
+    def getParameterSetNames():
+        return [
+            'Default',
+            'Human 1']
+
+    @staticmethod
+    def getDefaultOptions(parameterSetName='Default'):
+        options = MeshType_3d_haustra1.getDefaultOptions(parameterSetName)
+        options['Number of elements around'] = 15
+        options['Number of elements along haustrum'] = 4
+        options['Inner radius'] = 1.0
+        options['Haustrum length mid derivative factor'] = 2.0
+        options['Wall thickness'] = 0.05
+        optionsColon = {
+            'Number of haustra segments': 30,
+            'Tube type': 2
+            }
+        options.update(optionsColon)
+        if 'Human 1' in parameterSetName:
+            options['Tube type'] = 3
+        return options
+
+    @staticmethod
+    def getOrderedOptionNames():
+        optionNames = MeshType_3d_haustra1.getOrderedOptionNames()
+        optionNames.remove('Haustrum length')
+        for optionName in [
+            'Number of haustra segments',
+            'Tube type']:
+            optionNames.insert(3, optionName)
+        return optionNames
+
+    def checkOptions(options):
+        MeshType_3d_haustra1.checkOptions(options)
+        if options['Number of haustra segments'] < 1:
+            options['Number of haustra segments'] = 1
+        if options['Tube type'] < 1:
+            options['Tube type'] = 1
+        if options['Tube type'] > 3:
+            options['Tube type'] = 3
+
+    @staticmethod
+    def generateBaseMesh(region, options):
+        """
+        Generate the base tricubic Hermite mesh. See also generateMesh().
+        :param region: Zinc region to define model in. Must be empty.
+        :param options: Dict containing options. See getDefaultOptions().
+        :return: annotationGroups
+        """
+        elementsCountAround = options['Number of elements around']
+        elementsCountAlongHaustrum = options['Number of elements along haustrum']
+        elementsCountThroughWall = options['Number of elements through wall']
+        haustraSegmentCount = options['Number of haustra segments']
+        radius = options['Inner radius']
+        cornerInnerRadiusFactor = options['Corner inner radius factor']
+        haustrumInnerRadiusFactor = options['Haustrum inner radius factor']
+        haustrumLengthEndDerivativeFactor = options['Haustrum length end derivative factor']
+        haustrumLengthMidDerivativeFactor = options['Haustrum length mid derivative factor']
+        wallThickness = options['Wall thickness']
+        tubeType = options['Tube type']
+        useCrossDerivatives = options['Use cross derivatives']
+        useCubicHermiteThroughWall = not(options['Use linear through wall'])
+        elementsCountAlong = int(elementsCountAlongHaustrum*haustraSegmentCount)
+
+        if tubeType == 1: # Straight tube
+            cx = [[-4.0, 1.0, 3.0], [ 1.0, 2.0, 0.0 ] ]
+            cd1 = [[ 5.0, 1.0, -3.0 ], [ 5.0, 1.0, -3.0 ]]
+        elif tubeType == 2: # Human colon in x-y plane
+            cx = [ [ 0.0, 0.0, 0.0], [0.0, 10.0, 0.0], [5.0, 9.0, 0.0], [ 10.0, 10.0, 0.0 ], [ 10.0, -2.0, 0.0], [ 7.0, -4.0, 0.0] ]
+            cd1 = [ [ 0.0, 10.0, 0.0 ], [ 5.0, 5.0, 0.0 ], [5.0, 0.0, 0.0], [ 5.0, -5.0, 0.0 ], [ -3.0, -5.0, 0.0 ], [ -3.0, 0.0, 0.0 ]]
+        elif tubeType == 3: # Human colon in 3D
+            cx = [ [ 0.0, 0.0, 0.0], [0.0, 10.0, 3.0], [5.0, 9.0, 0.0], [ 10.0, 10.0, 2.0 ], [15.0, 15.0, 7.0], [ 20.0, -2.0, 0.0], [ 10.0, -4.0, -0.0] ]
+            cd1 = [ [ 0.0, 10.0, 3.0 ], [ 5.0, 5.0, 0.0 ], [5.0, 0.0, 0.0], [ 10.0, -5.0, 0.0 ], [12.0, 12.0, 0.0], [ 5.0, -12.0, -5.0 ], [ -8.0, 0.0, 0.0 ]]
+
+        # find arclength of colon
+        length = 0.0
+        elementsCountIn = len(cx) - 1
+        sd1 = smoothCubicHermiteDerivativesLine(cx, cd1, fixAllDirections = True,
+            magnitudeScalingMode = DerivativeScalingMode.HARMONIC_MEAN)
+        for e in range(elementsCountIn):
+            arcLength = getCubicHermiteArcLength(cx[e], sd1[e], cx[e + 1], sd1[e + 1])
+            length += arcLength
+        haustrumLength = length / haustraSegmentCount
+
+        # Generate inner surface of a haustra segment
+        xHaustraInner, d1HaustraInner, d2HaustraInner, haustraSegmentAxis = getColonHaustraSegmentInnerPoints(elementsCountAround, elementsCountAlongHaustrum, radius, cornerInnerRadiusFactor,
+            haustrumInnerRadiusFactor, haustrumLengthEndDerivativeFactor, haustrumLengthMidDerivativeFactor, haustrumLength)
+
+        # Generate tube mesh
+        annotationGroups, nextNodeIdentifier, nextElementIdentifier = generatetubemesh(region, elementsCountAround, elementsCountAlongHaustrum, elementsCountThroughWall, haustraSegmentCount,
+            cx, cd1, xHaustraInner, d1HaustraInner, d2HaustraInner, wallThickness, haustraSegmentAxis, haustrumLength, useCrossDerivatives, useCubicHermiteThroughWall)
+
+        return annotationGroups
+
+    @classmethod
+    def generateMesh(cls, region, options):
+        """
+        Generate base or refined mesh.
+        :param region: Zinc region to create mesh in. Must be empty.
+        :param options: Dict containing options. See getDefaultOptions().
+        :return: list of AnnotationGroup for mesh.
+        """
+        if not options['Refine']:
+            cls.generateBaseMesh(region, options)
+            return
+
+        refineElementsCountAround = options['Refine number of elements around']
+        refineElementsCountAlong = options['Refine number of elements along haustrum']
+        refineElementsCountThroughWall = options['Refine number of elements through wall']
+
+        baseRegion = region.createRegion()
+        baseAnnotationGroups = cls.generateBaseMesh(baseRegion, options)
+
+        meshrefinement = MeshRefinement(baseRegion, region, baseAnnotationGroups)
+        meshrefinement.refineAllElementsCubeStandard3d(refineElementsCountAround, refineElementsCountAlong, refineElementsCountThroughWall)
+        return meshrefinement.getAnnotationGroups()