39 lines
1.4 KiB
C
39 lines
1.4 KiB
C
#ifndef DATA_STRUCTURES_CAMERA_H
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#define DATA_STRUCTURES_CAMERA_H
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#include "tuples.h"
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#include "matrix.h"
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#include "ray.h"
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#include "world.h"
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#include "canvas.h"
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typedef struct CAMERA_Camera {
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unsigned int hsize; /** horizontal size in pixels */
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unsigned int vsize; /** vertical size in pixels */
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double half_width;
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double half_height;
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double field_of_view; /** field of view in radians */
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double pixel_size; /** pixel size in world units */
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MATRIX_Matrix* transform; /** view transform */
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MATRIX_Matrix* inv_transform; /** inverse view transform */
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} CAMERA_Camera;
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CAMERA_Camera* CAMERA_new(unsigned int hsize, unsigned int vsize, double field_of_view);
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void CAMERA_delete(CAMERA_Camera* camera);
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/**
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* Constructs and allocates a transformation matrix from 2 points and a vector pointing up
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* @param from
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* @param to
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* @param up
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* @return
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*/
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MATRIX_Matrix* CAMERA_view_transform(const TUPLES_Point from, const TUPLES_Point to, const TUPLES_Vector up);
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void CAMERA_set_transform(CAMERA_Camera* camera, MATRIX_Matrix* transform);
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void CAMERA_ray_for_pixel(RAY_Ray* dest, const CAMERA_Camera* camera, unsigned int px, unsigned int py);
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CANVAS_Canvas* CAMERA_render(const CAMERA_Camera* camera, const WORLD_World* world);
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#endif //DATA_STRUCTURES_CAMERA_H
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