forked from Crystalize/crystalize_xforms
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44 lines
1.3 KiB
44 lines
1.3 KiB
2 years ago
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<?xml version="1.0" encoding="utf-8"?>
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<user_transforms>
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<transform_def name="linkA_split_interest">
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<node name="input_params">
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<real name="split_interest" minval="0.0">1</real>
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<real name="split_interest_split">0</real>
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<real name="split_interest_spread">0</real>
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</node>
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<node name="internal_params">
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<real name="weight" />
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<real name="split" />
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<real name="spread" />
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</node>
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<int name="num_unit_randoms">2</int>
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<string name="winter_init_function">
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<![CDATA[
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linkA_split_interest_init_result(split_interest, split_interest_split, split_interest * (split_interest_spread + 2))
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]]>
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</string>
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<string name="winter_eval_function">
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<![CDATA[
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let
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x_plus_weight = p_in.x + weight
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x_less_weight = p_in.x - weight
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num = x_plus_weight * x_plus_weight + p_in.y * p_in.y
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den = x_less_weight * x_less_weight + p_in.y * p_in.y
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a = (atan2(p_in.y, x_less_weight) - atan2(p_in.y, x_plus_weight)) * 0.5
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r = spread * sqrt(sqrt(num / den))
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fluxa = vec2(cos(a), sin(a)) * r
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fluxb = vec2(-cos(a), sin(a)) * r
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rflux = lerp(fluxa, fluxb, if unit_rnd_0 >= 0.5 then 1.0 else 0.0)
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x_offset = if rflux.x >= 0 then split else -split
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in
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rflux + vec2(x_offset, 0.0)
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]]>
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</string>
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</transform_def>
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</user_transforms>
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