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float world_to_raster_size(float3 P);		float world_to_raster_size(float3 P);

/* Motion blur. */		/* Motion blur. */
float motion_time(int step) const;		float motion_time(int step) const;
int motion_step(float time) const;		int motion_step(float time) const;
bool use_motion() const;		bool use_motion() const;

void set_screen_size_and_resolution(int width_, int height_, int resolution_);		void set_screen_size_and_resolution(int width_, int height_, int resolution_);
		int screen_width() const;
		int screen_height() const;
		int screen_resolution() const;

private:		private:
/* Private utility functions. */		/* Private utility functions. */
float3 transform_raster_to_world(float raster_x, float raster_y);		float3 transform_raster_to_world(float raster_x, float raster_y);
};		};

CCL_NAMESPACE_END		CCL_NAMESPACE_END

#endif /* __CAMERA_H__ */		#endif /* __CAMERA_H__ */