#include "Runtime/Graphics/Shaders/CTextSupportShader.hpp"

#include "Runtime/GuiSys/CFontImageDef.hpp"
#include "Runtime/GuiSys/CRasterFont.hpp"

namespace urde {

void CTextSupportShader::CharacterInstance::SetMetrics(const CGlyph& glyph, const zeus::CVector2i& offset) {
  float layer = glyph.GetLayer();

  m_pos[0].assign(offset.x, 0.f, offset.y);
  m_uv[0].assign(glyph.GetStartU(), 1.f - glyph.GetStartV(), layer);

  m_pos[1].assign(offset.x + glyph.GetCellWidth(), 0.f, offset.y);
  m_uv[1].assign(glyph.GetEndU(), 1.f - glyph.GetStartV(), layer);

  m_pos[2].assign(offset.x, 0.f, offset.y + glyph.GetCellHeight());
  m_uv[2].assign(glyph.GetStartU(), 1.f - glyph.GetEndV(), layer);

  m_pos[3].assign(offset.x + glyph.GetCellWidth(), 0.f, offset.y + glyph.GetCellHeight());
  m_uv[3].assign(glyph.GetEndU(), 1.f - glyph.GetEndV(), layer);
}

void CTextSupportShader::ImageInstance::SetMetrics(const CFontImageDef& imgDef, const zeus::CVector2i& offset) {
  zeus::CVector2f imgSize;
  if (imgDef.x4_texs.size()) {
    const CTexture& tex = *imgDef.x4_texs[0].GetObj();
    imgSize.assign(tex.GetWidth() * imgDef.x14_cropFactor.x(), tex.GetHeight() * imgDef.x14_cropFactor.y());
  }
  zeus::CVector2f cropPad = imgDef.x14_cropFactor * 0.5f;

  m_pos[0].assign(offset.x, 0.f, offset.y);
  m_uv[0].assign(0.5f - cropPad.x(), 0.5f + cropPad.y());

  m_pos[1].assign(offset.x + imgSize.x(), 0.f, offset.y);
  m_uv[1].assign(0.5f + cropPad.x(), 0.5f + cropPad.y());

  m_pos[2].assign(offset.x, 0.f, offset.y + imgSize.y());
  m_uv[2].assign(0.5f - cropPad.x(), 0.5f - cropPad.y());

  m_pos[3].assign(offset.x + imgSize.x(), 0.f, offset.y + imgSize.y());
  m_uv[3].assign(0.5f + cropPad.x(), 0.5f - cropPad.y());
}

} // namespace urde