/* - use fopen to open the file, and fclose when you're done */
void frender(camera c, frame f, char *filename)
//void render(stage g)
{
char name[32];
int i, j;
for (i=0; i<32; i++)
name[i]='\0';
sprintf(name, "%s.ppm", filename);
FILE *fp = fopen (name, "a");
fprintf(fp, "P3\n");
fprintf(fp, "%d %d\n", c.w, c.h);
fprintf(fp, "255\n");
for(i=0; i < c.h; i++) {
for(j=0; j < c.w; j++) {
vec p = {j,i,0};
vec loc = logical_loc(c, p);
vec dir = vec_sub(loc, c.loc);
vec normdir = vec_norm(dir);
ray r = {c.loc, normdir};
rgb col = ftrace(r, f);
//rgb_print_bytes(col);
fprintf(fp, "%d %d %d\n",bytify(col.r),bytify(col.g),bytify(col.b));
}
}
fclose(fp);
}
/* render : runs trace_ray over each pixel, writes colors to file f */
void render(FILE *f, stage g)
{
int x, y;
xyz loc;
ray r;
r.origin = g.c.loc;
fprintf(f, "P3 %d %d 255\n", g.c.w, g.c.h);
for (y=0; y<g.c.h; y++) {
for (x=0; x<g.c.w; x++) {
loc = logical_loc(g.c, x, y);
r.dir = xyz_sub(loc,r.origin);
color_show_bytes(f, trace_ray(g.s, r));
}
}
}
void render(stage g)
{
int i, j;
camera c = g.c;
scene sc = g.s;
printf("P3\n");
printf("%d %d\n", c.w, c.h);
printf("255\n");
for(i=0; i < c.h; i++) {
for(j=0; j < c.w; j++) {
vec p = {j,i,0};
vec loc = logical_loc(c, p);
vec dir = vec_sub(loc, c.loc);
vec normdir = vec_norm(dir);
ray r = {c.loc, normdir};
rgb col = trace_ray(sc, r);
rgb_print_bytes(col);
}
}
}
#include "raytracer.h"
int main()
{
camera cam = {xyz_expr(0,0,-5), 120, 120};
color bg = color_expr(0,0,0.25);
poster p = poster_expr(xyz_expr(-1.5,1.5,4.5), 3, 3,
tex_green, color_expr(0,0,0));
object o1 = {POSTER, {.p = p}, NULL};
obj_list *os = ol_singleton(o1);
scene scn;
scn.bg = bg;
scn.objects = os;
stage stg = {cam, scn};
camera tcam = {xyz_expr(0,0,-1), 120, 120};
xyz loc1 = logical_loc(tcam,60,51);
xyz loc2 = logical_loc(tcam,1,0);
xyz loc3 = logical_loc(tcam,60,80);
ray orgray = {cam.loc, xyz_sub(loc1,cam.loc)};
hit_test ht = intersect(orgray, o1);
xyz htpt = ray_position(orgray,ht.t);
double d1 = dist(xyz_expr(-1.5,1.5,4.5),htpt);
double d2 = sqrt(p.w*p.w+p.h*p.h);
printf("\n\n *** testing intersect ***\n");
xyz_show(stdout,htpt);
hit_test_show(stdout,ht);
printf("\n\n *** testing dist ***\n");
