re-project: operators for projecting from a view screenshot rather then a camera.

 - new mode for projecting an image with the view matrix saved in the image id-properties rather then using the camera matrix.
 - operator to screenshot the view and create a new image with the view matrix stored in the image.

these will be used for better re-project integration and are not immediately very useful.

1 files changed, 35 insertions, 0 deletions

diff --git a/source/blender/editors/space_view3d/view3d_view.c b/source/blender/editors/space_view3d/view3d_view.c
index bcdb0513c4a..be974cf0050 100644
--- a/source/blender/editors/space_view3d/view3d_view.c
+++ b/source/blender/editors/space_view3d/view3d_view.c
@@ -920,6 +920,41 @@ int get_view3d_ortho(View3D *v3d, RegionView3D *rv3d)
   return 0;
 }
 
+/* copies logic of get_view3d_viewplane(), keep in sync */
+int get_view3d_cliprange(View3D *v3d, RegionView3D *rv3d, float *clipsta, float *clipend)
+{
+	int orth= 0;
+
+	*clipsta= v3d->near;
+	*clipend= v3d->far;
+
+	if(rv3d->persp==RV3D_CAMOB) {
+		if(v3d->camera) {
+			if(v3d->camera->type==OB_LAMP ) {
+				Lamp *la= v3d->camera->data;
+				*clipsta= la->clipsta;
+				*clipend= la->clipend;
+			}
+			else if(v3d->camera->type==OB_CAMERA) {
+				Camera *cam= v3d->camera->data;
+				*clipsta= cam->clipsta;
+				*clipend= cam->clipend;
+
+				if(cam->type==CAM_ORTHO)
+					orth= 1;
+			}
+		}
+	}
+
+	if(rv3d->persp==RV3D_ORTHO) {
+		*clipend *= 0.5;	// otherwise too extreme low zbuffer quality
+		*clipsta= - *clipend;
+		orth= 1;
+	}
+
+	return orth;
+}
+
 /* also exposed in previewrender.c */
 int get_view3d_viewplane(View3D *v3d, RegionView3D *rv3d, int winxi, int winyi, rctf *viewplane, float *clipsta, float *clipend, float *pixsize)
 {