3d.h File Reference

vector math and 3d graphics More...

#include "gfx.h"

Go to the source code of this file.

Functions
void	create_lookup_tables ()
	create the lookup tables for cos and sin. you MUST call this before operating on vectors.
void	destroy_lookup_tables ()
	deallocate the lookup tables
mesh_t *	mesh_new (int pcount, int tcount)
	create a new mesh with pcount points and tcount triangles
void	mesh_delete (mesh_t *mesh)
	deallocate mesh
void	vector_cross_product (vector_t *v1, vector_t *v2, vector_t *r)
	cross product of v1 by v2, result into r
int	vector_cross_product_z (vector_t *v1, vector_t *v2)
	cross product of the z axis of v1 by v2
int	vector_dot_product (vector_t *v1, vector_t *v2)
	dot product of v1 by v2
int	vector_length_squared (vector_t *v)
	squared length of vector v
int	vector_length (vector_t *v)
	pure length of vector v (it involves sqrt calculus, so it is expensive)
void	vector_normalize (vector_t *p, vector_t *r)
	normalize vector p, result in r
void	vector_scalar (vector_t *v, int s, vector_t *r)
	scale vector v by s, result in r
void	vector_add (vector_t *v1, vector_t *v2, vector_t *r)
	add vector v1 with v2, result in r
void	vector_subtract (vector_t *v1, vector_t *v2, vector_t *r)
	subtract vector v1 by v2, result in r
int	vector_distance (vector_t *v1, vector_t *v2)
	distance between vectors v1 and v2
void	vector_rotate (vector_t *p, u_char angle_x, u_char angle_y, u_char angle_z, vector_t *r)
	rotate vector p by the given angles, result in r
void	object_apply_transformations (object_t *obj, vector_t *pbuffer, int x, int y)
	apply perspective transformations on object obj, centering the points around x and y
void	object_render_wireframe (surface_t *s, object_t *obj, vector_t *pbuffer)
	render object obj with wireframes
void	object_render_flatshading (surface_t *s, object_t *obj, vector_t *pbuffer, int *low, int *high, vector_t *light)
	render object obj with flat-shading, requires a normalized source of light
Variables
int *	tcos
	lookup cosine table
int *	tsin
	lookup sine table

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Detailed Description

vector math and 3d graphics

Definition in file 3d.h.

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