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97 lines
2.5 KiB
C
97 lines
2.5 KiB
C
#ifndef __MARCHER_H__
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#define __MARCHER_H__
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#include "images/images.h"
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// define pi if not available
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#ifndef M_PI
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#define M_PI 3.14159265358979323846
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#endif
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struct __myvec;
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struct __mymtrx;
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struct __mycam;
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struct __myobject;
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struct __myscene;
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typedef struct __myvec {
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double x;
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double y;
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double z;
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} Point;
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typedef struct __mymtrx {
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double entries[9];
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} Matrix;
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inline Point pt_new(double x, double y, double z);
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inline Point pt_scale(Point pt, double length);
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inline Point pt_normalize(Point pt);
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inline double pt_length(Point pt);
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inline void pt_add(Point* pt, Point add);
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inline void pt_sub(Point* pt, Point sub);
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inline double pt_dist(Point p1, Point p2);
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inline Point pt_mod(Point pt, double mod);
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inline double pt_dot(Point a, Point b);
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inline Point pt_cross(Point a, Point b);
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inline double pt_angle(Point a, Point b);
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inline void pt_print(Point pt);
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inline void pt_print_n(const char* name, Point pt);
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typedef struct __mycam {
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Point location;
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Point direction;
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unsigned int fov;
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} Camera;
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Camera camera_new(Point direction, unsigned int fov);
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void camera_set_looking_at(Camera *cam, Point origin, Point thing);
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// Scene objects have a position, some args, and a distance calculation function
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// the distance calc function has the following signature:
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// double distanceTo(Point myLocation, double * myArgs, Point externalPoint)
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// where myLocation is this.location, myArgs is this.args and externalPoint is the point from wich we want to know the distance
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// the get_color function takes args: point_hit, direction_hit, myArgs, MyLocation, MyColor
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typedef struct __myobject {
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Point location;
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double * args;
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double (*distance)(Point, struct __myobject *);
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Color (*get_color)(Point, Point, struct __myobject *);
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Color color;
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struct __myscene* scene;
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} SceneObject;
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typedef struct __perfopts {
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int speed_cutoff;
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int max_steps;
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double threshold;
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} PerformanceOptimizations;
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typedef struct __myscene {
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unsigned int width;
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unsigned int height;
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SceneObject * objects;
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int object_count;
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int allocated_space;
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// performance opts
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PerformanceOptimizations perf_opts;
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// colors etc
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Color background;
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} Scene;
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Image* render_scene(Scene *scene, Camera *camera, unsigned int threads);
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Scene scene_new(unsigned int width, unsigned int height, int obj_count);
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void scene_add_obj(Scene* scene, SceneObject object);
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void scene_destroy(Scene scene);
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#include "src/point.c"
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#include "src/camera.c"
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#include "src/scene.c"
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#endif |