1 files changed, 0 insertions, 98 deletions
diff --git a/libgraphics/render.c b/libgraphics/render.c
deleted file mode 100644
index a1819ec..0000000
--- a/libgraphics/render.c
+++ /dev/null
@@ -1,98 +0,0 @@
-#include <u.h>
-#include <libc.h>
-#include <draw.h>
-#include "../geometry.h"
-#include "../graphics.h"
-
-/* requires p to be in NDC */
-int
-isclipping(Point3 p)
-{
-	if(p.x > p.w || p.x < -p.w ||
-	   p.y > p.w || p.y < -p.w ||
-	   p.z > p.w || p.z < 0)
-		return 1;
-	return 0;
-}
-
-static Point2
-flatten(Camera *c, Point3 p)
-{
-	Point2 p2;
-	Matrix S = {
-		Dx(c->viewport->r)/2, 0, 0,
-		0, Dy(c->viewport->r)/2, 0,
-		0, 0, 1,
-	}, T = {
-		1, 0, 1,
-		0, 1, 1,
-		0, 0, 1,
-	};
-
-	p2 = (Point2){p.x, p.y, p.w};
-	if(p2.w != 0)
-		p2 = divpt2(p2, p2.w);
-	mulm(S, T);
-	p2 = xform(p2, S);
-	return p2;
-}
-
-Point
-toviewport(Camera *c, Point3 p)
-{
-	Point2 p2;
-
-	p2 = invrframexform(flatten(c, p), c->viewport);
-	return (Point){p2.x, p2.y};
-}
-
-Point2
-fromviewport(Camera *c, Point p)
-{
-	return rframexform(Pt2(p.x,p.y,1), c->viewport);
-}
-
-void
-perspective(Matrix3 m, double fov, double a, double n, double f)
-{
-	double cotan;
-
-	cotan = 1/tan(fov/2*DEG);
-	identity3(m);
-	m[0][0] =  cotan/a;
-	m[1][1] =  cotan;
-	m[2][2] = -(f+n)/(f-n);
-	m[2][3] = -2*f*n/(f-n);
-	m[3][2] = -1;
-}
-
-void
-orthographic(Matrix3 m, double l, double r, double b, double t, double n, double f)
-{
-	identity3(m);
-	m[0][0] =  2/(r - l);
-	m[1][1] =  2/(t - b);
-	m[2][2] = -2/(f - n);
-	m[0][3] = -(r + l)/(r - l);
-	m[1][3] = -(t + b)/(t - b);
-	m[2][3] = -(f + n)/(f - n);
-}
-
-void
-line3(Camera *c, Point3 p0, Point3 p1, int end0, int end1, Image *src)
-{
-	p0 = WORLD2NDC(c, p0);
-	p1 = WORLD2NDC(c, p1);
-	if(isclipping(p0) || isclipping(p1))
-		return;
-	line(c->viewport, toviewport(c, p0), toviewport(c, p1), end0, end1, 0, src, ZP);
-}
-
-Point
-string3(Camera *c, Point3 p, Image *src, Font *f, char *s)
-{
-	p = WORLD2NDC(c, p);
-	if(isclipping(p))
-		return (Point){~0, ~0};
-	return string(c->viewport, toviewport(c, p), src, ZP, f, s);
-}