64 lines
1.5 KiB
Plaintext
64 lines
1.5 KiB
Plaintext
{
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"name": "kaleidoscope",
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"node_position": {
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"x": 0,
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"y": 0
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},
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"parameters": {
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"count": 5,
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"offset": 0
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},
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"shader_model": {
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"code": "",
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"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}",
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"inputs": [
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{
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"default": "vec4($uv, 0, 1)",
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"label": "",
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"longdesc": "The input image",
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"name": "i",
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"shortdesc": "Input",
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"type": "rgba"
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}
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],
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"instance": "",
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"longdesc": "Replicated an angle of the input image several times around the center.",
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"name": "Kaleidoscope",
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"outputs": [
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{
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"longdesc": "Shows the transformed image",
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"rgba": "$i(kal_rotate($uv, $count, $offset))",
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"shortdesc": "Output",
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"type": "rgba"
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}
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],
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"parameters": [
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{
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"control": "None",
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"default": 0,
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"label": "",
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"longdesc": "The number of replications of an angle of the input",
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"max": 10,
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"min": 2,
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"name": "count",
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"shortdesc": "Count",
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"step": 1,
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"type": "float"
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},
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{
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"control": "None",
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"default": 0,
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"label": "",
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"longdesc": "The angular offset of the replicated angle of the input",
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"max": 180,
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"min": -180,
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"name": "offset",
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"shortdesc": "Offset",
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"step": 0.1,
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"type": "float"
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}
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],
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"shortdesc": "Kaleidoscope"
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},
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"type": "shader"
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} |