From d3516b11559657935d70829c672f29393e857b8e Mon Sep 17 00:00:00 2001
From: rodri <rgl@antares-labs.eu>
Date: Mon, 20 May 2024 20:20:48 +0000
Subject: fix the perspective projection and add inverse xform functions.

---
 graphics.h | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'graphics.h')

diff --git a/graphics.h b/graphics.h
index 760d8a5..1158bef 100644
--- a/graphics.h
+++ b/graphics.h
@@ -276,10 +276,19 @@ void rmviewport(Viewport*);
 
 /* render */
 Renderer *initgraphics(void);
+
+/* xform */
 Point3 model2world(Entity*, Point3);
 Point3 world2vcs(Camera*, Point3);
 Point3 vcs2clip(Camera*, Point3);
 Point3 world2clip(Camera*, Point3);
+Point3 clip2ndc(Point3);
+Point3 ndc2viewport(Framebuf*, Point3);
+Point3 viewport2ndc(Framebuf*, Point3);
+Point3 ndc2vcs(Camera*, Point3);
+Point3 viewport2vcs(Camera*, Point3);
+Point3 vcs2world(Camera*, Point3);
+Point3 viewport2world(Camera*, Point3);
 void perspective(Matrix3, double, double, double, double);
 void orthographic(Matrix3, double, double, double, double, double, double);
 
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