#include "fb/pixfb.hpp"
#include <cstdint>
#include <algorithm>
#include "math/vector.hpp"

using namespace engine::fb;
using engine::math::Vector4;

PixelFrameBuffer::PixelFrameBuffer(unsigned int w, unsigned int h) {
    resize(w, h);
}

void PixelFrameBuffer::resize(unsigned int w, unsigned int h) {
    this->w = w;
    this->h = h;
    pixels_vector.resize(w * h);
    clear();
}

void PixelFrameBuffer::clear() {
    std::fill(pixels_vector.begin(), pixels_vector.end(), 0xff000000);
}

void PixelFrameBuffer::draw_point(int x, int y, const Vector4& point) {
    pixels_vector[x + y * w] =
          std::clamp(static_cast<std::uint32_t>(point.w * 256), static_cast<std::uint32_t>(0), static_cast<std::uint32_t>(255)) << (3 * 8)
        | std::clamp(static_cast<std::uint32_t>(point.x * 256), static_cast<std::uint32_t>(0), static_cast<std::uint32_t>(255)) << (2 * 8)
        | std::clamp(static_cast<std::uint32_t>(point.y * 256), static_cast<std::uint32_t>(0), static_cast<std::uint32_t>(255)) << (1 * 8)
        | std::clamp(static_cast<std::uint32_t>(point.z * 256), static_cast<std::uint32_t>(0), static_cast<std::uint32_t>(255)) << (0 * 8);
}