project.h

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#ifndef ALCHEMY_PROJECT_H
#define ALCHEMY_PROJECT_H
 
/// @file
/// The 3D projection.
 
#include "types.h"
#include "static_assert.h"
 
/// The 3D projection onto the screen: its focal length, near and far depths,
/// and the screen point the view centres on.
struct Projection {
  s32 focal;
  s32 near;
  s32 far;
  s32 centerX; ///< screen pixels
  s32 centerY; ///< screen pixels
};
 
STATIC_ASSERT(sizeof(struct Projection) == 0x14);
STATIC_ASSERT(offsetof(struct Projection, centerX) == 0x0c);
STATIC_ASSERT(offsetof(struct Projection, centerY) == 0x10);
 
extern struct Projection gProjection;
 
#endif