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struct Test_GuidesFromMeshObject
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(
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-- Tests that a distribution map can be assigned to control which proxy mesh is used for which strand in Mesh From Strands modifier
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function Test_UVDistribution =
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(
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-- Create a plane with 1x1 segments (so that there are are no vertices going exactly down the middle)
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distributionObject = Plane lengthsegs:1 widthsegs:1
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Guides distrSurf:distributionObject isSelected:on
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guidesNode = $
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max modify mode
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-- Set mode to UV-based generation
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guidesNode.method = 1
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-- Roots should be generated
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EAssert.IsTrue ( ( ( guidesNode.GetGuides() ).AsHair() ).NumRoots() > 0 )
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-- Cleanup
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delete guidesNode
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delete distributionObject
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),
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function Test_DisplacementMapAndOffset =
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(
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-- Create a plane with 1x1 segments (so that there are are no vertices going exactly down the middle)
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distributionObject = Plane lengthsegs:1 widthsegs:1
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Guides distrSurf:distributionObject isSelected:on
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guidesNode = $
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max modify mode
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-- Set default parameters
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guidesNode.method = 0
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guidesNode.count = 10
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guidesNode.guideLength = 10
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guidesNode.randomness = 0
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guidesNode.NumSegs = 2
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-- Without Displacement
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guidesNode.displacementMap = undefined
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guidesNode.displacementOffset = 0
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guidesCopy = instance guidesNode
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convertTo guidesCopy GuidesObject
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myHair = ( guidesCopy.GetGuides() ).AsHair()
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ZeroDisplaceTip = 0
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ZeroDisplaceRoot = 0
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for i = 0 to ( myHair.NumRoots() - 1 ) do
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(
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hairRootPoint = myHair.GetPointT i 0
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hairTipPoint = myHair.GetPointT i 1
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ZeroDisplaceTip += hairTipPoint.z
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ZeroDisplaceRoot += hairRootPoint.z
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)
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EAssert.AreNearEqual 0 ( ZeroDisplaceRoot )
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--With Displacement (with middle grey map and double Guide's Length as offset, it should be at the top of each strands without displacement)
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DisplacementMap = Checker ()
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DisplacementMap.color1 = DisplacementMap.color2 = (color 255 255 255) / 2
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guidesNode.displacementMap = DisplacementMap
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guidesNode.displacementOffset = guidesNode.guideLength * 2
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guidesCopy2 = instance guidesNode
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convertTo guidesCopy2 GuidesObject
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myHair2 = ( guidesCopy2.GetGuides() ).AsHair()
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DisplaceRoot = 0
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for i = 0 to ( myHair2.NumRoots() - 1 ) do
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(
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hairRootPoint = myHair2.GetPointT i 0
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DisplaceRoot += hairRootPoint.z
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)
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EAssert.AreEqual ZeroDisplaceTip DisplaceRoot
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-- Cleanup
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delete guidesNode
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delete distributionObject
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delete guidesCopy
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delete guidesCopy2
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),
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function Test_DisplacementMapChannels =
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(
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-- Create a plane with 1x1 segments (so that there are are no vertices going exactly down the middle)
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distributionObject = Plane lengthsegs:1 widthsegs:1
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-- Create Mapping Channels
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select distributionObject
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for i = 1 to 2 do
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(
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uvwMapModifier = Uvwmap ()
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uvwMapModifier.mapChannel = i
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uvwMapModifier.length = distributionObject.length / i
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uvwMapModifier.width = distributionObject.width / i
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modPanel.addModToSelection uvwMapModifier
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)
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Guides distrSurf:distributionObject isSelected:on
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guidesNode = $
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max modify mode
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-- Set default parameters
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guidesNode.method = 2
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guidesNode.uvChannel = 1
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guidesNode.count = 100
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guidesNode.guideLength = 10
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guidesNode.randomness = 0
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guidesNode.NumSegs = 2
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DisplacementMap = Checker ()
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DisplacementMap.color1 = black
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DisplacementMap.color2 = white
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guidesNode.displacementMap = DisplacementMap
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guidesNode.displacementOffset = guidesNode.guideLength
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--Bake 1-st Mapping Channel
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guidesNode.uvChannel = 1
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guidesCopy1 = instance guidesNode
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convertTo guidesCopy1 GuidesObject
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myHair1 = ( guidesCopy1.GetGuides() ).AsHair()
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--Bake 2-nd Mapping Channel
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guidesNode.uvChannel = 2
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guidesCopy2 = instance guidesNode
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convertTo guidesCopy2 GuidesObject
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myHair2 = ( guidesCopy2.GetGuides() ).AsHair()
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--Hairs Count should be the same
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EAssert.AreEqual ( myHair1.NumRoots() ) ( myHair2.NumRoots() )
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--Check for matching, if Mapping channel isn't affected, 100% points will be at the same position
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matchedPoints = 0
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for i = 0 to ( myHair1.NumRoots() - 1 ) do
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(
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RootPoint1 = myHair1.GetPointT i 0
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RootPoint2 = myHair2.GetPointT i 0
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if ( RootPoint1 == RootPoint2 ) then
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(
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matchedPoints += 1
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)
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)
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EAssert.AreNotEqual matchedPoints ( myHair1.NumRoots() )
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-- Cleanup
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delete guidesNode
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delete distributionObject
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delete guidesCopy1
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delete guidesCopy2
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)
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)
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EUnit.AddTestClass Test_GuidesFromMeshObject
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ok
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