261 lines
7.2 KiB
Text
261 lines
7.2 KiB
Text
--*************************************************************
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-- compute looped index
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fn exVertIndex index numPts =
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(
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if (index == 0) then numPts
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else if (index == numPts + 1) then 1
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else index
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)
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--*************************************************************
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-- compute the tangent of the given vertex
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fn getExtrudeTgt mesh index numPoints =
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(
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i1 = getVert mesh (exVertIndex (index - 1) numPoints)
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--i2 = exVertIndex index numPoints
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i3 = getVert mesh (exVertIndex (index + 1) numPoints)
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dir = [0, 0, 0]
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dir.x = i3.y - i1.y
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dir.y = - (i3.x - i1.x)
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dir.z = i3.z - i1.z
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dir = normalize dir
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dir
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)
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--*****************************************************
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-- compute the perimeter of the mesh to extrude
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fn computeWaterBorderPerimeter mesh =
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(
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lenght = 0
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for i = 1 to (mesh.numverts - 1) do
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(
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lenght = lenght + (distance (getVert mesh i) (getVert mesh i + 1))
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)
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lenght = lenght + (distance (getVert mesh (mesh.numverts - 1)) (getVert mesh 1))
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return lenght
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)
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--*************************************************************
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fn setWEFace mesh indexFace i1 i2 i3 =
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(
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setFace mesh indexFace [i2, i1, i3]
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)
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--*************************************************************
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plugin simpleMod waterStretch
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name: "WaterStretch"
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classID:#(0x1f7535ea, 0x36423d01)
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version: 1
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(
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local numSlices
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parameters params rollout:main
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(
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tgts type:#point3tab tabSizeVariable: true
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vertsNb type:#integer
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amount1 type:#float ui:cAmount1 default:1
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amount2 type:#float ui:cAmount2 default:1
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amount3 type:#float ui:cAmount3 default:1
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amount4 type:#float ui:cAmount4 default:1
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)
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rollout main "Parameters"
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(
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spinner cAmount1 "amount 1" type:#float range:[-1000, 1000, 0.1]
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spinner cAmount2 "amount 2" type:#float range:[-1000, 1000, 0.1]
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spinner cAmount3 "amount 3" type:#float range:[-1000, 1000, 0.1]
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spinner cAmount4 "amount 4" type:#float range:[-1000, 1000, 0.1]
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on main open do
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(
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print "rollout opened"
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if (numSlice < 2) then cAmount2.enabled = false
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if (numSlice < 3) then cAmount3.enabled = false
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if (numSlice < 4) then cAmount4.enabled = false
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)
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)
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on map i p do
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(
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if (i == 0) then return p
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if (vertsNb != 0) then
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(
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if (i > vertsNb) then
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(
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numSlice = (floor ((i - 1) / vertsNb)) as integer
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v0 = p
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v0n = tgts[(i - (numSlice * vertsNb))]
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if (numSlice == 1) then amount = amount1
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if (numSlice == 2) then amount = amount1 + amount2
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if (numSlice == 3) then amount = amount1 + amount2 + amount3
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if (numSlice == 4) then amount = amount1 + amount2 + amount3 + amount4
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return (v0 + (amount * v0n))
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)
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else
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(
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return p
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)
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)
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)
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)
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fn buildSlice sel startIndex numVerts slice nbSlice perimeter =
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(
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-- setup vertices
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dist = 0
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for i = 1 to numVerts do
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(
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setVert sel (i + startIndex + numVerts) (getVert sel i)
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setTVert sel (i + startIndex) [dist / perimeter, (slice - 1) / (nbSlice as float), 0]
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setTVert sel (i + startIndex + numVerts) [dist / perimeter, slice / (nbSlice as float), 0]
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if (i != numVerts) then
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(
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dist = dist + (distance (getVert sel i) (getVert sel (i + 1)))
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)
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)
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-- setup faces index
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for i = 0 to (numVerts - 2) do
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(
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setWEFace sel (2 * startIndex + 2 * i + 1) (startIndex + i + 1) (startIndex + i + numVerts+ 2) (startIndex + 1 + i + numVerts)
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setWEFace sel (2 * startIndex + 2 * i + 2) (startIndex + i + 1) (startIndex + i + 2) (startIndex + i + numVerts + 2)
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setTVFace sel (2 * startIndex + 2 * i + 1) (startIndex + i + numVerts + 2) (startIndex + i + 1) (startIndex + 1 + i + numVerts)
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setTVFace sel (2 * startIndex + 2 * i + 2) (startIndex + i + 2) (startIndex + i + 1) (startIndex + i + numVerts + 2)
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setVCFace sel (2 * startIndex + 2 * i + 1) [slice + 1, slice, slice + 1]
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setVCFace sel (2 * startIndex + 2 * i + 2) [slice, slice, slice + 1]
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)
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--setup last face
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i = numVerts - 1
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setWEFace sel (2 * startIndex + 2 * i + 1) (startIndex + i + 1) (startIndex + numVerts + 1) (startIndex + 1 + i + numVerts)
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setWEFace sel (2 * startIndex + 2 * i + 2) (startIndex + i + 1) (startIndex + 1) (startIndex + numVerts+ 1)
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setTVFace sel (2 * startIndex + 2 * i + 1) (startIndex + numVerts + 1) (startIndex + i + 1) (startIndex + 1 + i + numVerts)
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setTVFace sel (2 * startIndex + 2 * i + 2) (startIndex + 1) (startIndex + i + 1) (startIndex + numVerts + 1)
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setVCFace sel (2 * startIndex + 2 * i + 1) [slice + 1, slice, slice + 1]
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setVCFace sel (2 * startIndex + 2 * i + 2) [slice, slice, slice + 1]
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)
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utility ExtrudeWater "Extrude water"
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(
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button extrude "extrude water"
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spinner cNumSlice "numSlices" type:#integer range:[1, 4, 1]
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on extrude pressed do
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(
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numSlices = cNumSlice.value
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for currSel = 1 to selection.count do
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(
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sel = selection[currSel]
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-- make a copy of the selection
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myCopy = copy sel
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myCopy.name = myCopy.name + "_backup"
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ConvertToMesh sel
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--collapseStack sel
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perimeter = computeWaterBorderPerimeter sel
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initialNumVerts = sel.numverts + 1
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-- create additionnal vertices
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setNumVerts sel (initialNumVerts * (1 + numSlices)) true
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-- duplicate last vert (to avoid bad mapping)
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setVert sel initialNumVerts (getVert sel 1)
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setNumFaces sel (2 * initialNumVerts * numSlices) true
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-- vertex colors
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setNumCPVVerts sel (numSlices + 1)
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buildVCFaces sel
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for k = 1 to (numSlices + 1) do
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(
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i = 255 - (255 * (k - 1) / numSlices)
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setVertColor sel k (color i i i i)
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)
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-- vertex texture coordinates
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setNumTVerts sel (initialNumVerts * (1 + numSlices))
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buildTVFaces sel
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-- build slices
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for currSlice = 1 to numSlices do
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(
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buildSlice sel ((currSlice - 1) * initialNumVerts) initialNumVerts currSlice numSlices perimeter
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)
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modif = waterStretch()
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-- compute tangents
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for i = 1 to initialNumVerts do
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(
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tg = getExtrudeTgt sel i initialNumVerts
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modif.tgts[i] = tg
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)
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modif.vertsNb = initialNumVerts
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modif.numSlices = numSlices
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addModifier sel (vertexPaint())
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addModifier sel modif
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update sel
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)
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)
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)
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-- select vertices from a water extruded object
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fn selectVertices obj slice =
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(
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local vertsNb = obj.numVerts
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tab = #()
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for i = 1 to vertsNb do
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(
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tab[i] = slice * vertsNb + i
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)
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setVertSelection obj tab
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)
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-- a macro to select one slice from a water extruded shape
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macroScript wsChooseSlice1 category:"NEVRAX Tools" tooltip:"Water / choose slice 1"
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(
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if ($ != undefined) then
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(
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selectVertices $ 1
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update $
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)
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)
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macroScript wsChooseSlice2 category:"NEVRAX Tools" tooltip:"Water / choose slice 2"
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(
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if ($ != undefined) then
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(
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selectVertices $ 2
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update $
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)
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)
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macroScript wsChooseSlice3 category:"NEVRAX Tools" tooltip:"Water / choose slice 3"
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(
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if ($ != undefined) then
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(
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selectVertices $ 3
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update $
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)
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)
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macroScript wsChooseSlice4 category:"NEVRAX Tools" tooltip:"Water / choose slice 4"
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(
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if ($ != undefined) then
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(
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selectVertices $ 4
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update $
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)
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)
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