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blockinhead/rig_a_ramp.py

Created June 8, 2021 07:49
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Revisions

  1. blockinhead created this gist Jun 8, 2021.
    44 changes: 44 additions & 0 deletions rig_a_ramp.py
    View file
    Original file line number Diff line number Diff line change
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    import pymel.core as pm
    import random

    def ramp_to_curve(curve, anim_length=20, color1=(0.01, 0.01, 0.01), color2=(1, 1, 1)):
    ramp = pm.shadingNode('ramp', asTexture=True)
    place2d = pm.shadingNode('place2dTexture', asUtility=True)
    place2d.outUV >> ramp.uvCoord
    place2d.outUvFilterSize >> ramp.uvFilterSize
    ramp.cel[2].ep.set(1)
    ramp.cel[0].color.set(color1)
    ramp.cel[1].color.set(color2)
    ramp.cel[2].color.set(color1)

    anim_curve = pm.createNode('animCurveTU')
    anim_curve.addKeys((1, anim_length), (0, 1))
    anim_curve.setPostInfinityType('cycle')
    anim_curve.output >> ramp.cel[0].ep


    add1 = pm.createNode('addDoubleLinear')
    anim_curve.output >> add1.input1
    add1.input2.set(0.05)
    add1.output >> ramp.cel[1].ep

    add2 = pm.createNode('addDoubleLinear')
    anim_curve.output >> add2.input1
    add2.input2.set(0.1)
    add2.output >> ramp.cel[2].ep

    ramp.outColor >> curve.aiCurveShader
    curve.aiMode.set(1)
    curve.aiCurveWidth.set(0.01)
    curve.aiRenderCurve.set(1)


    pts=[]
    for i in range(10):
    pts.append([0, i, 0])
    curve = pm.curve(editPoint=pts)

    ramp_to_curve(curve=curve,
    anim_length=15 + random.randrange(8),
    color2=(random.uniform(0.5, 1), random.uniform(0.2, 1), 1))