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Diffstat (limited to 'libgraphics/camera.c')
-rw-r--r--libgraphics/camera.c104
1 files changed, 0 insertions, 104 deletions
diff --git a/libgraphics/camera.c b/libgraphics/camera.c
deleted file mode 100644
index bb55490..0000000
--- a/libgraphics/camera.c
+++ /dev/null
@@ -1,104 +0,0 @@
-#include <u.h>
-#include <libc.h>
-#include <draw.h>
-#include <memdraw.h>
-#include "../geometry.h"
-#include "../graphics.h"
-
-static int
-max(int a, int b)
-{
- return a > b ? a : b;
-}
-
-static void
-verifycfg(Camera *c)
-{
- assert(c->viewport.fb != nil);
- if(c->ptype == Ppersp)
- assert(c->fov > 0 && c->fov < 360);
- assert(c->clipn > 0 && c->clipn < c->clipf);
-}
-
-static void
-updatefb(Camera *c, Rectangle r, ulong chan)
-{
- Memimage *fb;
-
- fb = allocmemimage(r, chan);
- if(fb == nil)
- sysfatal("allocmemimage: %r");
- c->viewport.fb = fb;
- c->viewport.p = Pt2(r.min.x,r.max.y,1);
-}
-
-Camera*
-alloccamera(Rectangle r, ulong chan)
-{
- Camera *c;
-
- c = malloc(sizeof(Camera));
- if(c == nil)
- sysfatal("malloc: %r");
- memset(c, 0, sizeof *c);
- c->viewport.bx = Vec2(1,0);
- c->viewport.by = Vec2(0,-1);
- updatefb(c, r, chan);
- c->updatefb = updatefb;
-}
-
-void
-configcamera(Camera *c, double fov, double n, double f, Projection p)
-{
- c->fov = fov;
- c->clipn = n;
- c->clipf = f;
- c->ptype = p;
- reloadcamera(c);
-}
-
-void
-placecamera(Camera *c, Point3 p, Point3 focus, Point3 up)
-{
- c->p = p;
- if(focus.w == 0)
- c->bz = focus;
- else
- c->bz = normvec3(subpt3(c->p, focus));
- c->bx = normvec3(crossvec3(up, c->bz));
- c->by = crossvec3(c->bz, c->bx);
-}
-
-void
-aimcamera(Camera *c, Point3 focus)
-{
- placecamera(c, c->p, focus, c->by);
-}
-
-void
-reloadcamera(Camera *c)
-{
- double a;
- double l, r, b, t;
-
- verifycfg(c);
- switch(c->ptype){
- case Portho:
- /*
- r = Dx(c->viewport.fb->r)/2;
- t = Dy(c->viewport.fb->r)/2;
- l = -r;
- b = -t;
- */
- l = t = 0;
- r = Dx(c->viewport.fb->r);
- b = Dy(c->viewport.fb->r);
- orthographic(c->proj, l, r, b, t, c->clipn, c->clipf);
- break;
- case Ppersp:
- a = (double)Dx(c->viewport.fb->r)/Dy(c->viewport.fb->r);
- perspective(c->proj, c->fov, a, c->clipn, c->clipf);
- break;
- default: sysfatal("unknown projection type");
- }
-}