add a general primitive with support for points, lines and triangles.

also got rid of the dependency on OBJ for the entire renderer,
instead letting the user load a Model from any given OBJ. this
modularity will allow for other formats to be used in the same
way, relying on a single, internal representation for the
entire pipeline.

1 files changed, 20 insertions, 0 deletions

diff --git a/util.c b/util.c
index 0cd4354..e114da5 100644
--- a/util.c
+++ b/util.c
@@ -33,6 +33,26 @@ fmax(double a, double b)
 }
 
 void
+swapi(int *a, int *b)
+{
+	int t;
+
+	t = *a;
+	*a = *b;
+	*b = t;
+}
+
+void
+swappt(Point *a, Point *b)
+{
+	Point t;
+
+	t = *a;
+	*a = *b;
+	*b = t;
+}
+
+void
 memsetd(double *p, double v, usize len)
 {
 	double *dp;