Author: admin

Here’s a new blog post on deformations. No fancy tricks in this one but could be a good quick reference. All hail deltamush www.nicholas-taylor.com/blog/deforms 🙃

One thing I neglected to mention in that post is xyzdist and mindist both require primitives in the geo stream you’re looking up

So they aren’t totally apples to apples with nearpoints/pcfind

okay i couldnt help myself, but here’s single pass random overlapping dots “`c #include #include
vector dots(vector2 uv_in; vector2 freq; float rand_position, rand_scaling, rand_exp, dot_sharpness, alpha_out){ vector2 uv = uv_in; uv *= freq; vector2 iuv = floor(uv); vector2 grid = frac(uv); float alpha = 0; vector color = 0; float sharpness = fit(dot_sharpness, 0, 1, .5, 1); for(int i = -1; i <= 1; i++) for(int j = -1; j <= 1; j++){ vector2 nb_pixel = set(i, j); vector2 nb_offset = vector2(rand(iuv + nb_pixel + 324)) * clamp(rand_position, 0, 1); //random positional offsetting vector nb_color = vector(rand(iuv + nb_pixel + 64)); float nb_dot_size = pow(fit01(rand(iuv + nb_pixel), max(1 - rand_scaling,0), 1), rand_exp); //random scaling float nb_dots = length(nb_pixel + nb_offset - grid) - nb_dot_size; nb_dots = -min(0.0, nb_dots / nb_dot_size); //convert from distance field to dot nb_dots = smooth(1. - sharpness, sharpness, nb_dots); //sharpening the dots vop_composite("AoverB", color, alpha, nb_color * nb_dots, nb_dots, color, alpha); } alpha_out = alpha; return color; } vector2 uv = set(v@uv.x,v@uv.y); float sharpness = ch(“sharpness”); vector2 freq = chu(“dot_freq”); float random_dot_scaling = ch(“rand_scaling”); float random_exponent = ch(“rand_exponent”); vector2 offset = vector2(chu(“offset”)); float rand_offset = ch(“rand_dot_offset”); float dots_alpha; vector random_dots = dots(uv + offset / freq, freq, rand_offset, random_dot_scaling, random_exponent, sharpness, dots_alpha);
/* comp dots over incoming color*/ float alpha_out = 0; vop_composite(“AoverB”, v@Cd, alpha_out, random_dots, dots_alpha, v@Cd, 1); “`

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I needed again to get an axis-aligned Largest Interior Rectangle, and @jake rice 😮 earlier solution didn’t cut it (too much obvious failure cases, even with @CoskuTurhan modifications), so I did a new one from scratch. It’s based on this algorithm (without the outline optimizations) github.com/lukasalexanderweber/lir

I started with a more-nodes-less-vex approach, so it’s a bit of a weird combination. But seems to work 😉

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