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, 14 insertions, 0 deletions

diff --git a/internal.h b/internal.h
index 213326d..a982f2c 100644
--- a/internal.h
+++ b/internal.h
@@ -1,7 +1,15 @@
+typedef struct Polygon Polygon;
 typedef struct Tilerparam Tilerparam;
 typedef struct Rasterparam Rasterparam;
 typedef struct Rastertask Rastertask;
 
+struct Polygon
+{
+	Vertex *v;
+	ulong n;
+	ulong cap;
+};
+
 struct Tilerparam
 {
 	int id;
@@ -42,9 +50,15 @@ void berpvertex(Vertex*, Vertex*, Vertex*, Vertex*, Point3);
 void delvattrs(Vertex*);
 void fprintvattrs(int, Vertex*);
 
+/* clip */
+int clipprimitive(Primitive*);
+void rectclipline(Rectangle, Point*, Point*);
+
 /* util */
 int min(int, int);
 int max(int, int);
+void swapi(int*, int*);
+void swappt(Point*, Point*);
 void memsetd(double*, double, usize);
 
 /* nanosec */