Procedural.h

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#pragma once
 
#include "common/Result.h"
#include "graphics/hair/StrandsDatas.h"
 
#include <cstdint>
 
namespace eve::graphics::hair {
 
struct ProceduralParams {
    int strandCount     = 512;
    int pointsPerStrand = 8;
    float length        = 0.18f;
    float lengthJitter  = 0.04f;
    float rootRadius    = 0.0012f;
    float tipRadius     = 0.0004f;
    float curlStrength  = 0.02f;
    float minSlopeDot   = 0.25f;
    uint32_t seed       = 1;
};
 
[[nodiscard]] Result<StrandsDatas> generateOnMesh(const float *posXYZ, const float *nrmXYZ,
                                                  int vertexCount, const uint32_t *indices,
                                                  int indexCount, const ProceduralParams &params);
 
[[nodiscard]] EVENGINE_API_BACKENDS Result<StrandsDatas> generateOnPlane(float sizeX, float sizeZ,
                                                                         const ProceduralParams &params);
 
}  // namespace eve::graphics::hair