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Subdivision Surfaces - Pyramids with Creases example #94

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Subdivision Surfaces - Pyramids with Creases example #94

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8abf30d
Ignore Houdini backup folders.
crydalch Sep 13, 2024
3c8a3e1
Adds subdiv example of pyramids with edge and corner creases.
crydalch Sep 13, 2024
54dc634
Added thumbnail.png
crydalch Sep 13, 2024
5e3b0b3
Add default prim to Creases_SpinningPyramids.usda
crydalch Sep 13, 2024
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1 change: 1 addition & 0 deletions .gitignore
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Original file line number Diff line number Diff line change
Expand Up @@ -2,3 +2,4 @@
*.bck.*
.DS_Store
*.pyc
**/backup/
649 changes: 649 additions & 0 deletions full_assets/SubdivisionSurfaces/Creases_SpinningPyramids.usda
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50 changes: 50 additions & 0 deletions full_assets/SubdivisionSurfaces/Pyramid/Pyramid.usd
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#usda 1.0
(
defaultPrim = "Pyramid"
framesPerSecond = 24
metersPerUnit = 1
timeCodesPerSecond = 24
upAxis = "Y"
)

def Xform "Pyramid" (
assetInfo = {
asset identifier = @./Pyramid.usd@
string name = "Pyramid"
asset thumbnail = @./thumbnail.png@
}
prepend inherits = </__class__/Pyramid>
kind = "component"
prepend payload = @./payload.usda@
variants = {
string geo = "quad_creases"
string mtl = "previewsurface"
}
prepend variantSets = "geo"
)
{
variantSet "geo" = {
"quad_creases" (
prepend apiSchemas = ["GeomModelAPI"]
kind = "component"
) {
float3[] extentsHint = [(-0.9428103, 0, -0.8164976), (0.47140515, 1.3333297, 0.8164976)]

}
"quad_holes" (
prepend apiSchemas = ["GeomModelAPI"]
kind = "component"
) {
float3[] extentsHint = [(-0.9428103, 0, -0.8164976), (0.47140515, 1.3333297, 0.8164976)]

}
}
}

class "__class__"
{
class "Pyramid"
{
}
}

158 changes: 158 additions & 0 deletions full_assets/SubdivisionSurfaces/Pyramid/geo.usda
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#usda 1.0
(
defaultPrim = "Pyramid"
framesPerSecond = 24
metersPerUnit = 1
timeCodesPerSecond = 24
upAxis = "Y"
)

over "ASSET_geo_variant_0" (
hidden = true
)
{
def Xform "ASSET" (
variants = {
string geo = "quad_creases"
}
prepend variantSets = "geo"
)
{
variantSet "geo" = {
"quad_creases" (
kind = "component"
variants = {
string creases = "none"
}
prepend variantSets = "creases"
) {
def Scope "geo" (
prepend apiSchemas = ["GeomModelAPI"]
)
{
float3[] extentsHint = [(-0.9428103, 0, -0.8164976), (0.47140515, 1.3333297, 0.8164976)]
uniform token purpose = "default"

def Mesh "shape"
{
float3[] extent = [(-0.9428103, 0, -0.8164976), (0.47140515, 1.3333297, 0.8164976)]
int[] faceVertexCounts = [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4]
int[] faceVertexIndices = [1, 12, 10, 0, 1, 13, 14, 2, 2, 14, 15, 3, 3, 15, 13, 1, 4, 16, 17, 5, 5, 17, 18, 6, 6, 18, 16, 4, 7, 16, 19, 8, 8, 19, 17, 9, 9, 17, 16, 7, 10, 16, 18, 11, 11, 18, 19, 12, 12, 19, 16, 10, 13, 19, 18, 14, 14, 18, 17, 15, 15, 17, 19, 13, 0, 4, 5, 3, 3, 5, 6, 2, 2, 6, 4, 0, 0, 7, 8, 1, 1, 8, 9, 3, 3, 9, 7, 0, 0, 10, 11, 2, 2, 11, 12, 1]
normal3f[] normals = [(-0.47140422, 0.3333345, 0.8164962), (-0.47140425, 0.33333454, 0.8164963), (-0.47140434, 0.33333454, 0.8164962), (-0.47140434, 0.3333345, 0.8164962), (-0, -1, 0), (0, -1, -0), (-0, -1, -0), (0, -1, -0), (0, -1, -0), (-0, -1, -0), (-0, -1, 0), (-0, -1, -0), (-0, -1, -0), (-0, -1, 0), (0, -1, -0), (-0, -1, 0), (0.1669245, -0.47131485, 0.8660246), (0.43523034, -0.49223801, 0.7538409), (0.34826502, -0.24626227, 0.9044702), (0.166923, -0.47131535, 0.86602455), (-0.3330771, 0.9428996, -0), (-0.0869659, 0.9847577, 0.15062922), (-0.08696596, 0.9847577, -0.15062916), (-0.33307716, 0.9428996, -0), (0.16692315, -0.4713153, -0.86602455), (0.3482651, -0.24626227, -0.90447015), (0.43523034, -0.492238, -0.75384104), (0.16692461, -0.47131476, -0.8660246), (0.66653705, -0.47131473, -0.5775732), (0.43523034, -0.492238, -0.75384104), (0.6091617, -0.24626227, -0.7538414), (0.6665379, -0.47131523, -0.5775718), (0.16653852, 0.9428997, 0.28845322), (0.17393166, 0.9847577, 3.9618154e-8), (-0.0869659, 0.9847577, 0.15062922), (0.16653846, 0.9428997, 0.2884531), (-0.8334607, -0.47131535, 0.28845286), (-0.95742667, -0.24626237, 0.1506288), (-0.87046057, -0.4922382, 3.96181e-8), (-0.83346146, -0.47131482, 0.2884516), (-0.83346146, -0.47131482, -0.28845155), (-0.87046057, -0.4922382, 3.96181e-8), (-0.95742667, -0.24626233, -0.1506288), (-0.8334607, -0.47131535, -0.28845286), (0.16653848, 0.9428997, -0.28845313), (-0.08696596, 0.9847577, -0.15062916), (0.17393166, 0.9847577, 3.9618154e-8), (0.16653849, 0.9428996, -0.28845316), (0.6665379, -0.47131523, 0.57757175), (0.60916173, -0.2462622, 0.75384146), (0.43523034, -0.49223801, 0.7538409), (0.6665371, -0.47131482, 0.57757306), (0.50000006, -0.00027398957, -0.8660254), (0.6091617, -0.24626227, -0.7538414), (0.3482651, -0.24626227, -0.90447015), (0.5, -0.00027408465, -0.8660254), (-0.99999994, -0.0002739021, -0), (-0.95742667, -0.24626233, -0.1506288), (-0.95742667, -0.24626237, 0.1506288), (-1, -0.00027397228, -0), (0.5, -0.00027392784, 0.8660254), (0.34826502, -0.24626227, 0.9044702), (0.60916173, -0.2462622, 0.75384146), (0.5, -0.0002738146, 0.8660254), (0.9428085, 0.33333457, 0), (0.94280857, 0.3333346, 0), (0.9428085, 0.33333445, 5.228378e-8), (0.94280857, 0.3333345, 1.5208453e-8), (0.94280857, 0.3333345, 1.5208453e-8), (0.9428085, 0.33333445, 5.228378e-8), (0.9428085, 0.33333445, -5.228378e-8), (0.94280857, 0.3333345, -1.5208453e-8), (0.94280857, 0.3333345, -1.5208453e-8), (0.9428085, 0.33333445, -5.228378e-8), (0.94280857, 0.3333346, 0), (0.9428085, 0.33333457, 0), (-0.47140434, 0.3333345, -0.8164962), (-0.47140434, 0.33333454, -0.8164962), (-0.47140425, 0.33333454, -0.8164963), (-0.47140422, 0.3333345, -0.8164962), (-0.47140422, 0.3333345, -0.8164962), (-0.47140425, 0.33333454, -0.8164963), (-0.47140425, 0.33333457, -0.8164962), (-0.47140434, 0.33333454, -0.8164962), (-0.47140434, 0.33333454, -0.8164962), (-0.47140425, 0.33333457, -0.8164962), (-0.47140434, 0.33333454, -0.8164962), (-0.47140434, 0.3333345, -0.8164962), (-0.47140434, 0.3333345, 0.8164962), (-0.47140434, 0.33333454, 0.8164962), (-0.47140425, 0.33333457, 0.8164962), (-0.47140434, 0.33333454, 0.8164962), (-0.47140434, 0.33333454, 0.8164962), (-0.47140425, 0.33333457, 0.8164962), (-0.47140425, 0.33333454, 0.8164963), (-0.47140422, 0.3333345, 0.8164962)] (
interpolation = "faceVarying"
)
uniform token orientation = "rightHanded"
point3f[] points = [(0, 1.3333297, 0), (-0.9428103, 0, 0), (0.47140515, 0, 0.8164976), (0.47140515, 0, -0.8164976), (0.2000002, 0.7676461, 0), (0.37140477, 0.2828426, -0.2968815), (0.37140477, 0.2828426, 0.2968815), (-0.100000076, 0.767646, -0.17320523), (-0.44280922, 0.28284258, -0.17320524), (0.07140455, 0.28284258, -0.4700867), (-0.100000076, 0.767646, 0.17320523), (0.07140455, 0.28284258, 0.4700867), (-0.44280922, 0.28284258, 0.17320524), (-0.34281015, 0, 0), (0.17140517, 0, 0.2968824), (0.17140517, 0, -0.2968824), (2.9802322e-8, 0.69681245, -1.1570335e-8), (0.17134704, 0.21217267, -0.29678172), (0.17134705, 0.21217266, 0.2967817), (-0.34269392, 0.21217264, -2.1429756e-8)] (
interpolation = "vertex"
)
float primvars:coverage = 0.5407419
int[] primvars:coverage:indices = None
color3f[] primvars:displayColor = [(0.97494125, 0.06529765, 0.055584475), (0.9968833, 0.9185242, 0.03472861), (0.9467732, 0.018363958, 0.99876523), (0.008025134, 0.9938322, 0.6843996), (0.9931611, 0.46066093, 0.01035705), (0.57898384, 0.96838266, 0.060374074), (0.9947585, 0.6403281, 0.00183379), (0.32176924, 0.9813758, 0.04705893), (0.08376516, 0.99208397, 0.031928644), (0.98660034, 0.90130025, 0.014679497), (0.019984307, 0.547497, 0.99022424), (0.9728471, 0.09234106, 0.14325786), (0.40028083, 0.9590799, 0.020620039), (0.704215, 0.9777674, 0.022657953), (0.5095006, 0.07365145, 0.98261684), (0.31949833, 0.02229975, 0.97868997), (0.35788813, 0.9825174, 0.08772965), (0.4489419, 0.034428142, 0.98012024), (0.019264918, 0.9887445, 0.25305086), (0.58588773, 0.9979753, 0.0022557508), (0.9750521, 0.18337734, 0.063028514), (0.049839947, 0.2665377, 0.9788028), (0.87276286, 0.9905392, 0.055511575), (0.0376994, 0.33380193, 0.9963375)] (
interpolation = "uniform"
)
int[] primvars:displayColor:indices = None
int primvars:numnonpacked = 0
int[] primvars:numnonpacked:indices = None
texCoord2f[] primvars:st = [(0.0009765625, 0.62417525), (0.16361426, 0.5302765), (0.349459, 0.53027654), (0.5120958, 0.62417525), (0.22949219, 0.39175323), (0.3921296, 0.29785445), (0.5779755, 0.29785448), (0.7406129, 0.39175323), (0.48828125, 0.60659695), (0.6509186, 0.51269823), (0.8367646, 0.51269823), (0.9994019, 0.60659695), (0.48828125, 0.1769095), (0.65091866, 0.08301075), (0.8367645, 0.083010726), (0.9994019, 0.17690949), (0.42240247, 0.7451202), (0.4224338, 0.67871094), (0.6082159, 0.678711), (0.6082472, 0.7451202), (0.8367642, 0.7004957), (0.83673304, 0.7669049), (0.65095013, 0.7669049), (0.6509189, 0.70049566), (0.16263765, 0.066409364), (0.16266899, 1.4039668e-7), (0.34845114, 0), (0.34848246, 0.06640934), (0.34945902, 0.71807396), (0.34942773, 0.78448325), (0.1636456, 0.7844832), (0.16361424, 0.718074), (0.8367642, 0.27080825), (0.836733, 0.33721742), (0.65095013, 0.33721745), (0.65091896, 0.27080822), (0.6082472, 0.93291765), (0.6082159, 0.99932694), (0.42243376, 0.99932694), (0.4224024, 0.9329177), (0.34848243, 0.2542068), (0.34845114, 0.32061613), (0.162669, 0.320616), (0.16263764, 0.25420684), (0.57797515, 0.48565194), (0.577944, 0.5520612), (0.3921611, 0.5520612), (0.3921299, 0.48565194), (0.16361426, 0.5302765), (0.16364552, 0.46386728), (0.3494277, 0.4638672), (0.349459, 0.53027654), (0.3921296, 0.29785445), (0.39216116, 0.23144531), (0.577944, 0.23144534), (0.5779755, 0.29785448), (0.6509186, 0.51269823), (0.65095013, 0.4462891), (0.836733, 0.44628906), (0.8367646, 0.51269823), (0.65091866, 0.08301075), (0.6509502, 0.016601562), (0.836733, 0.016601626), (0.8367645, 0.083010726), (0.25976562, 0.83901894), (0.42240247, 0.7451202), (0.6082472, 0.7451202), (0.7708849, 0.83901894), (0.9994019, 0.60659695), (0.8367642, 0.7004957), (0.6509189, 0.70049566), (0.48828125, 0.60659695), (0, 0.16030803), (0.16263765, 0.066409364), (0.34848246, 0.06640934), (0.51111925, 0.16030805), (0.5120958, 0.62417525), (0.34945902, 0.71807396), (0.16361424, 0.718074), (0.0009765625, 0.62417525), (0.9994019, 0.17690949), (0.8367642, 0.27080825), (0.65091896, 0.27080822), (0.48828125, 0.1769095), (0.7708849, 0.83901894), (0.6082472, 0.93291765), (0.4224024, 0.9329177), (0.25976562, 0.83901894), (0.51111925, 0.16030805), (0.34848243, 0.2542068), (0.16263764, 0.25420684), (0, 0.16030803), (0.7406129, 0.39175323), (0.57797515, 0.48565194), (0.3921299, 0.48565194), (0.22949219, 0.39175323)] (
interpolation = "faceVarying"
)
int[] primvars:st:indices = None
uniform token subdivisionScheme = "catmullClark"
}
}
variantSet "creases" = {
"corners" {
over "geo"
{
def Mesh "shape"
{
int[] cornerIndices = [0, 2]
float[] cornerSharpnesses = [25, 25]
int[] faceVertexCounts = [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4]
int[] faceVertexIndices = [1, 12, 10, 0, 1, 13, 14, 2, 2, 14, 15, 3, 3, 15, 13, 1, 4, 16, 17, 5, 5, 17, 18, 6, 6, 18, 16, 4, 7, 16, 19, 8, 8, 19, 17, 9, 9, 17, 16, 7, 10, 16, 18, 11, 11, 18, 19, 12, 12, 19, 16, 10, 13, 19, 18, 14, 14, 18, 17, 15, 15, 17, 19, 13, 0, 4, 5, 3, 3, 5, 6, 2, 2, 6, 4, 0, 0, 7, 8, 1, 1, 8, 9, 3, 3, 9, 7, 0, 0, 10, 11, 2, 2, 11, 12, 1]
uniform token orientation = "rightHanded"
uniform token subdivisionScheme = "catmullClark"
}
}

}
"edges" {
over "geo"
{
def Mesh "shape"
{
int[] creaseIndices = [0, 2, 0, 1, 1, 3, 1, 2, 0, 3, 2, 3]
int[] creaseLengths = [2, 2, 2, 2, 2, 2]
float[] creaseSharpnesses = [100, 100, 100, 100, 100, 100]
int[] faceVertexCounts = [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4]
int[] faceVertexIndices = [1, 12, 10, 0, 1, 13, 14, 2, 2, 14, 15, 3, 3, 15, 13, 1, 4, 16, 17, 5, 5, 17, 18, 6, 6, 18, 16, 4, 7, 16, 19, 8, 8, 19, 17, 9, 9, 17, 16, 7, 10, 16, 18, 11, 11, 18, 19, 12, 12, 19, 16, 10, 13, 19, 18, 14, 14, 18, 17, 15, 15, 17, 19, 13, 0, 4, 5, 3, 3, 5, 6, 2, 2, 6, 4, 0, 0, 7, 8, 1, 1, 8, 9, 3, 3, 9, 7, 0, 0, 10, 11, 2, 2, 11, 12, 1]
uniform token orientation = "rightHanded"
uniform token subdivisionScheme = "catmullClark"
}
}

}
"none" {

}
}

}
}
}
}

over "ASSET_geo_variant_1" (
hidden = true
)
{
def Xform "ASSET" (
variants = {
string geo = "quad_holes"
}
prepend variantSets = "geo"
)
{
variantSet "geo" = {
"quad_holes" (
kind = "component"
) {
def Scope "geo" (
prepend apiSchemas = ["GeomModelAPI"]
)
{
float3[] extentsHint = [(-0.9428103, 0, -0.8164976), (0.47140515, 1.3333297, 0.8164976)]
uniform token purpose = "default"

def Mesh "shape"
{
float3[] extent = [(-0.9428103, 0, -0.8164976), (0.47140515, 1.3333297, 0.8164976)]
int[] faceVertexCounts = [3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4]
int[] faceVertexIndices = [4, 6, 5, 7, 9, 8, 10, 12, 11, 13, 15, 14, 0, 4, 5, 3, 3, 5, 6, 2, 2, 6, 4, 0, 0, 7, 8, 1, 1, 8, 9, 3, 3, 9, 7, 0, 0, 10, 11, 2, 2, 11, 12, 1, 1, 12, 10, 0, 1, 13, 14, 2, 2, 14, 15, 3, 3, 15, 13, 1]
int[] holeIndices = [0, 1, 2, 3]
uniform token orientation = "rightHanded"
point3f[] points = [(0, 1.3333297, 0), (-0.9428103, 0, 0), (0.47140515, 0, 0.8164976), (0.47140515, 0, -0.8164976), (0.2000002, 0.7676461, 0), (0.37140477, 0.2828426, -0.2968815), (0.37140477, 0.2828426, 0.2968815), (-0.100000076, 0.767646, -0.17320523), (-0.44280922, 0.28284258, -0.17320524), (0.07140455, 0.28284258, -0.4700867), (-0.100000076, 0.767646, 0.17320523), (0.07140455, 0.28284258, 0.4700867), (-0.44280922, 0.28284258, 0.17320524), (-0.34281015, 0, 0), (0.17140517, 0, 0.2968824), (0.17140517, 0, -0.2968824)] (
interpolation = "vertex"
)
color3f[] primvars:displayColor = [(1, 0, 0), (1, 0, 0), (1, 0, 0), (1, 0, 0), (0.22173825, 0.22173825, 0.22173825), (0.57073903, 0.57073903, 0.57073903), (0.12559389, 0.12559389, 0.12559389), (0.5839105, 0.5839105, 0.5839105), (0.35338718, 0.35338718, 0.35338718), (0.6352648, 0.6352648, 0.6352648), (0.5959357, 0.5959357, 0.5959357), (0.38499352, 0.38499352, 0.38499352), (0.18189418, 0.18189418, 0.18189418), (0.3232037, 0.3232037, 0.3232037), (0.3230929, 0.3230929, 0.3230929), (0.549813, 0.549813, 0.549813)] (
interpolation = "uniform"
)
int[] primvars:displayColor:indices = None
uniform token subdivisionScheme = "catmullClark"
}
}

}
}
}
}

def "Pyramid" (
prepend references = [
</ASSET_geo_variant_1/ASSET>,
</ASSET_geo_variant_0/ASSET>
]
)
{
}

64 changes: 64 additions & 0 deletions full_assets/SubdivisionSurfaces/Pyramid/mtl.usda
View file
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Original file line number Diff line number Diff line change
@@ -0,0 +1,64 @@
#usda 1.0
(
defaultPrim = "Pyramid"
framesPerSecond = 24
metersPerUnit = 1
timeCodesPerSecond = 24
upAxis = "Y"
)

over "ASSET_mtl_previewsurface"
{
def Scope "mtl"
{
def Material "PyramidMaterial" (
prepend inherits = </__class_mtl__/PyramidMaterial>
)
{
token outputs:surface.connect = </ASSET_mtl_previewsurface/mtl/PyramidMaterial/usdpreviewsurface1.outputs:surface>

def Shader "usdpreviewsurface1"
{
uniform token info:id = "UsdPreviewSurface"
color3f inputs:diffuseColor.connect = </ASSET_mtl_previewsurface/mtl/PyramidMaterial/usdprimvarreader1.outputs:result>
float inputs:roughness = 0.1625
token outputs:surface
}

def Shader "usdprimvarreader1"
{
uniform token info:id = "UsdPrimvarReader_float3"
string inputs:varname = "displayColor"
vector3f outputs:result
}
}
}
}

def Xform "Pyramid" (
prepend references = </ASSET_mtl_previewsurface>
variants = {
string mtl = "previewsurface"
}
prepend variantSets = "mtl"
)
{
def Scope "mtl"
{
}
variantSet "mtl" = {
"previewsurface" {
over "geo"
{
over "shape" (
prepend apiSchemas = ["MaterialBindingAPI"]
)
{
rel material:binding = </Pyramid/mtl/PyramidMaterial>
}
}

}
}
}

19 changes: 19 additions & 0 deletions full_assets/SubdivisionSurfaces/Pyramid/payload.usda
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#usda 1.0
(
defaultPrim = "Pyramid"
framesPerSecond = 24
metersPerUnit = 1
timeCodesPerSecond = 24
upAxis = "Y"
)

def "Pyramid" (
kind = "component"
prepend references = [
@./mtl.usda@,
@./geo.usda@
]
)
{
}

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13 changes: 13 additions & 0 deletions full_assets/SubdivisionSurfaces/README.md
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# Subdivision Surfaces

Scenes and geometry demonstrating subdivision surface features in USD.

## Creases - Spinning Pyramids

![Creases_SpinningPyramids_Storm](media/Creases_SpinningPyramids_Storm.jpg)

Provides 3 spinning subdivs demonstrating creases on the Pyramid model:
* `/World/Pyramid_EdgeCreases` - Sharpens the outer edges
* `/World/Pyramid_CornerCreases` - Sharpens two points
* `/World/Pyramid_NoCreases` - Subdiv without creases for comparison

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