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Provide a frame transform for UV texture coordinates #1027

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merged 5 commits into from
Aug 2, 2022
Merged

Provide a frame transform for UV texture coordinates #1027

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6d672c6
Provide a frame transform for UV texture coordinates
vernalchen Jul 11, 2022
e356b76
Refine wording & add test cases
vernalchen Jul 13, 2022
c8b2b3d
add the new funtionality into place2d
vernalchen Jul 26, 2022
9d80a2f
leverage the default value
vernalchen Jul 27, 2022
8cac5ae
Clarify node order in test material
jstone-lucasfilm Jul 31, 2022
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8 changes: 7 additions & 1 deletion libraries/stdlib/stdlib_defs.mtlx
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Original file line number Diff line number Diff line change
Expand Up @@ -2332,14 +2332,20 @@

<!--
Node: <place2d> Supplemental Node
Transform incoming UV texture coordinates for 2D texture placement.
Transform incoming UV texture coordinates from one 2D frame of reference to another.
operationorder (integer enum): the order in which to perform the transform operations.
"0" or "SRT" performs -pivot, scale, rotate, translate, +pivot as per the original
implementation matching the behavior of certain DCC packages, and "1" or "TRS" performs
-pivot, translate, rotate, scale, +pivot which does not introduce texture shear.
Default is 0 "SRT" for backward compatibility.
-->
<nodedef name="ND_place2d_vector2" node="place2d" nodegroup="math">
<input name="texcoord" type="vector2" value="0.0, 0.0" />
<input name="pivot" type="vector2" value="0.0,0.0" />
<input name="scale" type="vector2" value="1.0,1.0" />
<input name="rotate" type="float" value="0.0" unittype="angle" unit="degree" />
<input name="offset" type="vector2" value="0.0,0.0" />
<input name="operationorder" type="integer" value="0" enum="SRT, TRS" enumvalues="0, 1" />
<output name="out" type="vector2" defaultinput="texcoord" />
</nodedef>

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30 changes: 28 additions & 2 deletions libraries/stdlib/stdlib_ng.mtlx
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Expand Up @@ -1045,7 +1045,12 @@

<!--
Node: <place2d>
Transform incoming UV texture coordinates for 2D texture placement.
Transform incoming UV texture coordinates from one 2D frame of reference to another.
operationorder (integer enum): the order in which to perform the transform operations.
"0" or "SRT" performs -pivot, scale, rotate, translate, +pivot as per the original
implementation matching the behavior of certain DCC packages, and "1" or "TRS" performs
-pivot, translate, rotate, scale, +pivot which does not introduce texture shear.
Default is 0 "SRT" for backward compatibility.
-->
<nodegraph name="NG_place2d_vector2" nodedef="ND_place2d_vector2">
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<subtract name="N_subpivot" type="vector2">
Expand All @@ -1068,7 +1073,28 @@
<input name="in1" type="vector2" nodename="N_applyoffset" />
<input name="in2" type="vector2" interfacename="pivot" />
</add>
<output name="out" type="vector2" nodename="N_addpivot" />
<subtract name="N_applyoffset2" type="vector2">
<input name="in1" type="vector2" nodename="N_subpivot" />
<input name="in2" type="vector2" interfacename="offset" />
</subtract>
<rotate2d name="N_applyrot2" type="vector2">
<input name="in" type="vector2" nodename="N_applyoffset2" />
<input name="amount" type="float" interfacename="rotate" />
</rotate2d>
<divide name="N_applyscale2" type="vector2">
<input name="in1" type="vector2" nodename="N_applyrot2" />
<input name="in2" type="vector2" interfacename="scale" />
</divide>
<add name="N_addpivot2" type="vector2">
<input name="in1" type="vector2" nodename="N_applyscale2" />
<input name="in2" type="vector2" interfacename="pivot" />
</add>
<switch name="N_switch_operationorder" type="vector2">
<input name="in1" type="vector2" nodename="N_addpivot" />
<input name="in2" type="vector2" nodename="N_addpivot2" />
<input name="which" type="integer" interfacename="operationorder" />
</switch>
<output name="out" type="vector2" nodename="N_switch_operationorder" />
</nodegraph>

<!-- ======================================================================== -->
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37 changes: 37 additions & 0 deletions resources/Materials/TestSuite/stdlib/texture/image_transform.mtlx
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Original file line number Diff line number Diff line change
@@ -0,0 +1,37 @@
<?xml version="1.0"?>
<materialx version="1.38">
<nodegraph name="test_place2d_SRT">
<texcoord name="texcoord1" type="vector2" />
<place2d name="a_place2d" type="vector2">
<input name="texcoord" type="vector2" nodename="texcoord1" />
<input name="offset" type="vector2" value="0.0, 0.0" />
<input name="rotate" type="float" value="30.0" unittype="angle" unit="degree" />
<input name="scale" type="vector2" value="2.0, 1.0" />
<input name="pivot" type="vector2" value="0.5, 0.5" />
<input name="operationorder" type="integer" value="0" />
</place2d>
<image name="image_number_1" type="color3">
<input name="file" type="filename" value="resources/Images/grid.png" />
<input name="default" type="color3" value="1.0, 0.0, 0.0" />
<input name="texcoord" type="vector2" nodename="a_place2d" />
</image>
<output name="out" type="color3" nodename="image_number_1" />
</nodegraph>
<nodegraph name="test_place2d_TRS">
<texcoord name="texcoord1" type="vector2" />
<place2d name="a_place2d" type="vector2">
<input name="texcoord" type="vector2" nodename="texcoord1" />
<input name="offset" type="vector2" value="0.2, 0.2" />
<input name="rotate" type="float" value="30.0" unittype="angle" unit="degree" />
<input name="scale" type="vector2" value="2.0, 1.0" />
<input name="pivot" type="vector2" value="0.5, 0.5" />
<input name="operationorder" type="integer" value="1" />
</place2d>
<image name="image_number_1" type="color3">
<input name="file" type="filename" value="resources/Images/grid.png" />
<input name="default" type="color3" value="1.0, 0.0, 0.0" />
<input name="texcoord" type="vector2" nodename="a_place2d" />
</image>
<output name="out" type="color3" nodename="image_number_1" />
</nodegraph>
</materialx>