noise-tool: add offset to positions for testing
allows us to peek at the negative quandrants for rounding and other issues.
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@ -1,6 +1,7 @@
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#include "image.hpp"
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#include "noise.hpp"
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#include "noise/lerp.hpp"
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#include "noise/basis/constant.hpp"
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#include "noise/basis/value.hpp"
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#include "noise/basis/perlin.hpp"
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#include "noise/basis/worley.hpp"
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@ -24,11 +25,15 @@ main (void)
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b.basis.seed = time (NULL);
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// generate the values. offset positions slightly to avoid simple axis issues with perlin basis
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{
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auto offset = util::vector2f { -100 };
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for (size_t y = 0; y < size.h; ++y)
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for (size_t x = 0; x < size.w; ++x) {
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auto v = b ({float(x + 20), float(y + 20)});
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auto v = b (util::point2f {float (x), float (y)} + offset); //{x + offset, y + offset});
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img.data ()[y * size.w + x] = v;
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}
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}
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// rescale into the range [0, 1]
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auto range = std::minmax_element (img.begin (), img.end ());
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