camera: add a Camv constructor.

1 files changed, 18 insertions, 6 deletions

diff --git a/camera.c b/camera.c
index 12f37eb..439c596 100644
--- a/camera.c
+++ b/camera.c
@@ -96,22 +96,34 @@ verifycfg(Camera *c)
 }
 
 Camera *
-Cam(Rectangle vr, Renderer *r, Projection p, double fov, double n, double f)
+Camv(Viewport *v, Renderer *r, Projection p, double fov, double n, double f)
 {
 	Camera *c;
 
-	c = newcamera();
-	c->view = mkviewport(vr);
-	if(c->view == nil){
-		werrstr("mkviewport: %r");
+	if(v == nil || r == nil)
 		return nil;
-	}
+
+	c = newcamera();
+	c->view = v;
 	c->rctl = r;
 	configcamera(c, p, fov, n, f);
 	return c;
 }
 
 Camera *
+Cam(Rectangle vr, Renderer *r, Projection p, double fov, double n, double f)
+{
+	Viewport *v;
+
+	v = mkviewport(vr);
+	if(v == nil){
+		werrstr("mkviewport: %r");
+		return nil;
+	}
+	return Camv(v, r, p, fov, n, f);
+}
+
+Camera *
 newcamera(void)
 {
 	Camera *c;