KhrTextureTransform.h

#pragma once
 
#include "CesiumGltf/ExtensionKhrTextureTransform.h"
 
#include <glm/glm.hpp>
 
namespace CesiumGltf {
enum class KhrTextureTransformStatus {
  Valid,
  ErrorInvalidOffset,
  ErrorInvalidScale
};
 
class KhrTextureTransform {
public:
  KhrTextureTransform() noexcept;
 
  KhrTextureTransform(const ExtensionKhrTextureTransform& extension) noexcept;
 
  KhrTextureTransformStatus status() const noexcept { return this->_status; }
 
  glm::dvec2 offset() const noexcept { return this->_offset; }
 
  double rotation() const noexcept { return this->_rotation; }
 
  glm::dvec2 rotationSineCosine() const noexcept {
    return this->_rotationSineCosine;
  }
 
  glm::dvec2 scale() const noexcept { return this->_scale; }
 
  glm::dvec2 applyTransform(double u, double v) const noexcept;
 
  std::optional<int64_t> getTexCoordSetIndex() const noexcept {
    return this->_texCoordSetIndex;
  }
 
private:
  KhrTextureTransformStatus _status;
  glm::dvec2 _offset;
  double _rotation;
  glm::dvec2 _scale;
  std::optional<int64_t> _texCoordSetIndex;
 
  // Cached values of sin(rotation) and cos(rotation).
  glm::dvec2 _rotationSineCosine;
};
 
} // namespace CesiumGltf