76 lines
2.8 KiB
C++
76 lines
2.8 KiB
C++
#include <utility>
|
|
#include <bgtu/computer_graphics_lab_work/utilities/shader.hpp>
|
|
#include <bgtu/computer_graphics_lab_work/utilities/shapes/circle.hpp>
|
|
|
|
#include "variant1.hpp"
|
|
|
|
namespace BGTU::ComputerGraphicsLabWork::Impl {
|
|
namespace {
|
|
|
|
template<class real_shader_t>
|
|
class TransformedShader : public Utilities::Shader {
|
|
private:
|
|
Utilities::Matrix3d transform;
|
|
real_shader_t real_shader;
|
|
public:
|
|
TransformedShader(Utilities::Matrix3d transform, real_shader_t real_shader) : transform{transform}, real_shader{real_shader} {};
|
|
|
|
[[nodiscard]] RendererApi::Color::Transparent get_color(RendererApi::PointF<2>::component_t x, RendererApi::PointF<2>::component_t y) const final {
|
|
auto p = this->transform * RendererApi::PointF<2>{x, y};
|
|
return this->real_shader.get_color(p.x, p.y);
|
|
}
|
|
};
|
|
|
|
template<double radius>
|
|
class SunShader : public Utilities::Shader {
|
|
private:
|
|
public:
|
|
SunShader() = default;
|
|
|
|
[[nodiscard]] RendererApi::Color::Transparent get_color(RendererApi::PointF<2>::component_t x, RendererApi::PointF<2>::component_t y) const final {
|
|
RendererApi::PointF<2>::component_t distance = std::hypot(x, y) / radius;
|
|
if (distance > 1)
|
|
return RendererApi::Color::Transparent{255, 255, 0, 0};
|
|
if (distance > 0.8)
|
|
return Utilities::colors_gradient(RendererApi::Color::Transparent{255, 255, 0, 0}, (distance - 0.8) * 5, RendererApi::Color::Transparent{255, 255, 0, 255});
|
|
else if (distance > 0.3)
|
|
return Utilities::colors_gradient(RendererApi::Color::Transparent{255, 255, 0, 255}, (distance - 0.3) * 10 / 5, RendererApi::Color::Transparent{255, 255, 200, 255});
|
|
else
|
|
return RendererApi::Color::Transparent{255, 255, 200, 255};
|
|
}
|
|
};
|
|
|
|
template<double z, double radius>
|
|
class SunSprite : public RendererApi::Sprite<SpriteData, Utilities::DefaultVoxelDrawerCache::VoxelPainterImpl> {
|
|
|
|
private:
|
|
public:
|
|
SunSprite() = default;
|
|
|
|
void draw(BGTU::ComputerGraphicsLabWork::Utilities::DefaultVoxelDrawerCache::VoxelPainterImpl *frame, const BGTU::ComputerGraphicsLabWork::Impl::SpriteData *data) const final {
|
|
TransformedShader<SunShader<radius>> shader{data->planets_transform[0].inversed(), SunShader<radius>{}};
|
|
Utilities::Shapes::iterate_circle_fill(
|
|
static_cast< RendererApi::PointI<2>>(data->planets_transform[0] * RendererApi::PointF<2>{0, 0}),
|
|
data->radius_multiplier * radius,
|
|
[&](bool, RendererApi::PointI<2>::component_t x, RendererApi::PointI<2>::component_t y) {
|
|
frame->add_voxel(x, y, z, shader.get_color(x, y));
|
|
}
|
|
);
|
|
|
|
}
|
|
};
|
|
|
|
|
|
SunSprite<1.0, 0.1> sun_sprite{};
|
|
|
|
|
|
RendererApi::Sprite<SpriteData, Utilities::DefaultVoxelDrawerCache::VoxelPainterImpl> *_sprites[]{
|
|
&sun_sprite
|
|
};
|
|
|
|
}
|
|
|
|
|
|
RendererApi::Sprite<SpriteData, Utilities::DefaultVoxelDrawerCache::VoxelPainterImpl> **const sprites = _sprites;
|
|
std::size_t sprites_count = 1;
|
|
} |