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#pragma once
#include "sampler.h"
#include <LLBM/kernel/collect_moments.h>
#include <LLBM/kernel/collect_shear_layer_normal.h>
template <typename DESCRIPTOR, typename T, typename S, typename SDF>
class ShearLayerVisibilityS : public Sampler {
private:
Lattice<DESCRIPTOR,T,S>& _lattice;
DeviceBuffer<bool>& _mask;
SDF _geometry;
DeviceBuffer<float> _moments_rho;
DeviceBuffer<float> _moments_u;
DeviceBuffer<float> _shear_normals;
float3 _shear_layer;
float _lower = 0;
float _upper = 1;
bool _center = true;
public:
ShearLayerVisibilityS(Lattice<DESCRIPTOR,T,S>& lattice, DeviceBuffer<bool>& mask, SDF geometry, float3 shear_layer):
Sampler("Shear layer visibility", lattice.cuboid()),
_lattice(lattice),
_mask(mask),
_geometry(geometry),
_moments_rho(lattice.cuboid().volume),
_moments_u(DESCRIPTOR::d * lattice.cuboid().volume),
_shear_normals(DESCRIPTOR::d * lattice.cuboid().volume),
_shear_layer(shear_layer)
{ }
void sample() {
_lattice.template inspect<CollectShearLayerNormalsF>(_mask, _moments_rho.device(), _moments_u.device(), _shear_normals.device());
_lattice.template helper<CollectShearLayerVisibilityF>(_mask, _shear_normals.device(), _shear_layer, _sample_surface);
}
void render(VolumetricRenderConfig& config) {
raymarch<<<
dim3(config.canvas_size.x / 32 + 1, config.canvas_size.y / 32 + 1),
dim3(32, 32)
>>>(config,
_geometry,
[samples=_sample_texture, lower=_lower, upper=_upper, center=_center]
__device__ (float3 p) -> float {
float sample = tex3D<float>(samples, p.x, p.y, p.z);
float centered = center ? 0.5 + 0.5*sample : sample;
return fabs(sample) >= lower && fabs(sample) <= upper ? fabs(centered) : 0;
},
[] __device__ (float x) -> float {
return x;
});
}
void interact() {
ImGui::InputFloat3("Normal", reinterpret_cast<float*>(&_shear_layer));
ImGui::Checkbox("Center", &_center);
ImGui::DragFloatRange2("Bounds", &_lower, &_upper, 0.01f, 0.f, 1.f, "%.2f", "%.2f");
}
};
template <typename DESCRIPTOR, typename T, typename S, typename SDF>
ShearLayerVisibilityS(Lattice<DESCRIPTOR,T,S>&, DeviceBuffer<bool>&, SDF) -> ShearLayerVisibilityS<DESCRIPTOR,T,S,SDF>;
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