diff options
Diffstat (limited to 'src/math.c')
| -rw-r--r-- | src/math.c | 29 |
1 files changed, 15 insertions, 14 deletions
@@ -1,4 +1,6 @@ +#define _POSIX_C_SOURCE 200809L //for strdup #include <stdio.h> +#include <stdlib.h> #include <string.h> #include "common.h" @@ -6,27 +8,23 @@ extern struct hvr_global global; -//might change this to use hashtables for faster lookups. +//ONE OF THESE DAYS I NEED TO RENAME ALL THE GROUP_ROT SHIT TO GROUP_REL since it doesn't just have rotations anymore. + +//this function needs to create a group_relative if one doesn't already exist. c3_group_rot_t *get_group_relative(char *id) {//crashes in here somehwere... - int i; c3_group_rot_t *gr; struct entry *tmp; if((tmp=ht_getnode(&global.ht_group,id))) { gr=tmp->target;//target is a void * if(gr) return gr; - }//if this didn't work, do fallback... - //fprintf(stderr,"# !!! hash table failed for %s\n",id); - for(i=0;global.group_rot[i];i++) { - if(!strcmp(global.group_rot[i]->id,id)) {//should I use glob here and return an array? - //if(gr != global.group_rot[i]) { - //fprintf(stderr,"# %s ? %s ? %s\n",tmp->original,gr->id,global.group_rot[i]->id); - //fprintf(stderr,"# %16x != %16x. wtf?\n",gr,global.group_rot[i]); - // fprintf(stderr,"ht method != loop method\n"); - //} - return global.group_rot[i]; - } } - return 0;//need to be sure to check return value for this function! + //if we got here, we need to make a new one. + gr=malloc(sizeof(c3_group_rot_t)); + memset(gr,0,sizeof(c3_group_rot_t)); + gr->s=(c3_t){1,1,1};//scale needs to be all 1s, since it is multiplied against the coordinates. + gr->id=strdup(id);//don't forget to free this when it gets deleted. + ht_setkey(&global.ht_group,gr->id,gr); + return gr;//check only for the case of malloc errors. } c3_t rotate_c3_xr(c3_t p1,c3_t p2,radians xr) {//rotate y and z around camera based on xr (looking up and down) @@ -172,6 +170,9 @@ c3_s_t apply_group_relative(c3_s_t s,c3_group_rot_t *group_rot) { s2.p[i]=c3_add(gr->p,rotate_c3_yr(s.p[i],(c3_t){0,0,0},d2r((degrees){0-(gr->r.y.d)}))); } else { if(gr) { + s.p[i].x *= gr->s.x; + s.p[i].y *= gr->s.y; + s.p[i].z *= gr->s.z;//scaling applied? sure.... //s2.p[i]=c3_add(gr->p,rotate_c3_yr(s.p[i],gr->p,d2r(gr->r.y))); s2.p[i]=c3_add(gr->p,rotate_c3_xr( rotate_c3_yr( |