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improved kaleidoscope so it copies the centered top part of its source

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RodZill4 2019-10-18 07:20:38 +02:00
parent 45670c4d7a
commit 1186cd44ca
1 changed files with 1 additions and 1 deletions
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addons/material_maker/nodes/kaleidoscope.mmg
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{"name":"kaleidoscope","node_position":{"x":0,"y":0},"parameters":{"count":7,"direction":0,"offset":0},"shader_model":{"global":"vec2 kal_rotate(vec2 uv, float count) {\n\tuv -= vec2(0.5);\n\tfloat l = length(uv);\n\tfloat a = mod(atan(uv.y, uv.x), 6.28318530718/count);\n\treturn vec2(0.5)+l*vec2(cos(a), sin(a));\n}","inputs":[{"default":"vec4($uv, 0, 1)","label":"","name":"i","type":"rgba"}],"instance":"","name":"Kaleidoscope","outputs":[{"rgba":"$i(kal_rotate($uv, $count))","type":"rgba"}],"parameters":[{"default":0,"label":"","max":10,"min":2,"name":"count","step":1,"type":"float","widget":"spinbox"}]},"type":"shader"}
{"name":"kaleidoscope","node_position":{"x":0,"y":0},"parameters":{"count":7,"direction":0,"offset":0},"shader_model":{"code":"","global":"vec2 kal_rotate(vec2 uv, float count, float offset) {\n\tfloat pi = 3.14159265359;\n\toffset *= pi/180.0;\n\toffset += pi*(1.0/count+0.5);\n\tuv -= vec2(0.5);\n\tfloat l = length(uv);\n\tfloat a = mod(atan(uv.y, uv.x)+offset, 2.0*pi/count)-offset;\n\treturn vec2(0.5)+l*vec2(cos(a), sin(a));\n}","inputs":[{"default":"vec4($uv, 0, 1)","label":"","name":"i","type":"rgba"}],"instance":"","name":"Kaleidoscope","outputs":[{"rgba":"$i(kal_rotate($uv, $count, $offset))","type":"rgba"}],"parameters":[{"default":0,"label":"","max":10,"min":2,"name":"count","step":1,"type":"float","widget":"spinbox"},{"default":0,"label":"","max":180,"min":-180,"name":"offset","step":0.1,"type":"float","widget":"spinbox"}]},"type":"shader"}