123 lines
5.2 KiB
Plaintext
123 lines
5.2 KiB
Plaintext
{
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"name": "bricks",
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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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"bevel": 0.1,
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"columns": 3,
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"mortar": 0.1,
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"pattern": 0,
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"repeat": 1,
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"row_offset": 0.5,
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"rows": 6
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},
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"shader_model": {
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"code": "vec3 $(name_uv) = $(name)_xyz($(uv));\n",
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"global": "vec3 brick(vec2 uv, vec2 bmin, vec2 bmax, float mortar, float bevel) {\n\tfloat color = 0.5;\n\tvec2 c1 = (uv-bmin-vec2(mortar))/bevel;\n\tvec2 c2 = (bmax-uv-vec2(mortar))/bevel;\n\tvec2 c = min(c1, c2);\n\tcolor = clamp(min(c.x, c.y), 0.0, 1.0);\n\treturn vec3(color, mod(bmin, vec2(1.0, 1.0)));\n}\n\nvec3 bricks_rb(vec2 uv, vec2 count, float repeat, float offset, float mortar, float bevel) {\n\tcount *= repeat;\n\tmortar /= max(count.x, count.y);\n\tbevel /= max(count.x, count.y);\n\tfloat x_offset = offset*step(0.5, fract(uv.y*count.y*0.5));\n\tvec2 bmin = floor(vec2(uv.x*count.x-x_offset, uv.y*count.y));\n\tbmin.x += x_offset;\n\tbmin /= count;\n\treturn brick(uv, bmin, bmin+vec2(1.0)/count, mortar, bevel);\n}\n\nvec3 bricks_rb2(vec2 uv, vec2 count, float repeat, float offset, float mortar, float bevel) {\n\tcount *= repeat;\n\tmortar /= max(2.0*count.x, count.y);\n\tbevel /= max(2.0*count.x, count.y);\n\tfloat x_offset = offset*step(0.5, fract(uv.y*count.y*0.5));\n\tcount.x = count.x*(1.0+step(0.5, fract(uv.y*count.y*0.5)));\n\tvec2 bmin = floor(vec2(uv.x*count.x-x_offset, uv.y*count.y));\n\tbmin.x += x_offset;\n\tbmin /= count;\n\treturn brick(uv, bmin, bmin+vec2(1.0)/count, mortar, bevel);\n}\n\nvec3 bricks_hb(vec2 uv, vec2 count, float repeat, float offset, float mortar, float bevel) {\n\tfloat pc = count.x+count.y;\n\tfloat c = pc*repeat;\n\tmortar /= c;\n\tbevel /= c;\n\tvec2 corner = floor(uv*c);\n\tfloat cdiff = mod(corner.x-corner.y, pc);\n\tif (cdiff < count.x) {\n\t\treturn brick(uv, (corner-vec2(cdiff, 0.0))/c, (corner-vec2(cdiff, 0.0)+vec2(count.x, 1.0))/c, mortar, bevel);\n\t} else {\n\t\treturn brick(uv, (corner-vec2(0.0, pc-cdiff-1.0))/c, (corner-vec2(0.0, pc-cdiff-1.0)+vec2(1.0, count.y))/c, mortar, bevel);\n\t}\n}\n\nvec3 bricks_bw(vec2 uv, vec2 count, float repeat, float offset, float mortar, float bevel) {\n\tvec2 c = 2.0*count*repeat;\n\tfloat mc = max(c.x, c.y);\n\tmortar /= mc;\n\tbevel /= mc;\n\tvec2 corner1 = floor(uv*c);\n\tvec2 corner2 = count*floor(repeat*2.0*uv);\n\tfloat cdiff = mod(dot(floor(repeat*2.0*uv), vec2(1.0)), 2.0);\n\tvec2 corner;\n\tvec2 size;\n\tif (cdiff == 0.0) {\n\t\tcorner = vec2(corner1.x, corner2.y);\n\t\tsize = vec2(1.0, count.y);\n\t} else {\n\t\tcorner = vec2(corner2.x, corner1.y);\n\t\tsize = vec2(count.x, 1.0);\n\t}\n\treturn brick(uv, corner/c, (corner+size)/c, mortar, bevel);\n}\n\nvec3 bricks_sb(vec2 uv, vec2 count, float repeat, float offset, float mortar, float bevel) {\n\tvec2 c = (count+vec2(1.0))*repeat;\n\tfloat mc = max(c.x, c.y);\n\tmortar /= mc;\n\tbevel /= mc;\n\tvec2 corner1 = floor(uv*c);\n\tvec2 corner2 = (count+vec2(1.0))*floor(repeat*uv);\n\tvec2 rcorner = corner1 - corner2;\n\tvec2 corner;\n\tvec2 size;\n\tif (rcorner.x == 0.0 && rcorner.y < count.y) {\n\t\tcorner = corner2;\n\t\tsize = vec2(1.0, count.y);\n\t} else if (rcorner.y == 0.0) {\n\t\tcorner = corner2+vec2(1.0, 0.0);\n\t\tsize = vec2(count.x, 1.0);\n\t} else if (rcorner.x == count.x) {\n\t\tcorner = corner2+vec2(count.x, 1.0);\n\t\tsize = vec2(1.0, count.y);\n\t} else if (rcorner.y == count.y) {\n\t\tcorner = corner2+vec2(0.0, count.y);\n\t\tsize = vec2(count.x, 1.0);\n\t} else {\n\t\tcorner = corner2+vec2(1.0);\n\t\tsize = vec2(count.x-1.0, count.y-1.0);\n\t}\n\treturn brick(uv, corner/c, (corner+size)/c, mortar, bevel);\n}",
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"inputs": [
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],
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"instance": "vec3 $(name)_xyz(vec2 uv) {\n return bricks_$(pattern)(uv, vec2($(columns), $(rows)), $(repeat), $(row_offset), $(mortar), max(0.001, $(bevel)));\n}",
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"name": "Bricks",
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"outputs": [
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{
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"f": "$(name_uv).x",
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"type": "f"
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},
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{
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"rgb": "rand3($(name_uv).yz+vec2($(seed)))",
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"type": "rgb"
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}
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],
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"parameters": [
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{
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"default": 0,
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"label": "",
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"name": "pattern",
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"type": "enum",
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"values": [
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{
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"name": "Running bond",
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"value": "rb"
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},
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{
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"name": "Running bond (2)",
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"value": "rb2"
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},
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{
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"name": "HerringBone",
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"value": "hb"
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},
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{
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"name": "Basket weave",
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"value": "bw"
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},
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{
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"name": "Spanish bond",
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"value": "sb"
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}
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]
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},
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{
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"default": 1,
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"label": "Repeat:",
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"max": 8,
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"min": 1,
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"name": "repeat",
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"step": 1,
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"type": "float",
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"widget": "spinbox"
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},
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{
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"default": 6,
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"label": "Rows:",
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"max": 64,
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"min": 1,
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"name": "rows",
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"step": 1,
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"type": "float",
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"widget": "spinbox"
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},
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{
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"default": 3,
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"label": "Columns:",
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"max": 64,
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"min": 1,
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"name": "columns",
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"step": 1,
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"type": "float",
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"widget": "spinbox"
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},
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{
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"default": 0.5,
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"label": "Offset:",
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"max": 1,
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"min": 0,
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"name": "row_offset",
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"step": 0,
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"type": "float"
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},
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{
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"default": 0.1,
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"label": "Mortar:",
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"max": 0.5,
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"min": 0,
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"name": "mortar",
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"step": 0,
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"type": "float"
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},
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{
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"default": 0.1,
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"label": "Bevel:",
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"max": 0.5,
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"min": 0,
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"name": "bevel",
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"step": 0,
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"type": "float"
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}
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]
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},
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"type": "shader"
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} |