2.5: Space Image ported back

Organized as follows:

uvedit/
	uv editing related code
	uvedit_draw.c: drawing code
	uvedit_ops.c: operators, just a few done
	uvedit_unwrap_ops.c: will be operators for unwrapping
	uvedit_paramatrizer.c: lscm/abf/stretch/pack

space_image/
	space_image.c: registration and common getter/setters
	image_draw.c: drawing code, mostly functional
	image_panels.c: panels, all commented out
	image_render.c: render callbacks, non functional
	image_ops.c: operators, only view navigation done
	image_header.c: header, menus mostly done but missing buttons

Notes:
* Header menus consist only of Operator and RNA buttons, if they
  are not implemented they're displayed grayed out. Ideally the full
  header could work like this, but std_libbuttons looks problematic.

* Started using view2d code more than the old code, but for now it
  still does own view2d management due to some very specific
  requirements that the image window has. The drawing code however
  is more clear hopefully, it only uses view2d, and there is no
  switching between 'p' and 'f' view2d's anymore, it is always 'f'.

* In order to make uvedit operators more independent I move some
  image space settings to scene toolsettings, and the current image
  and its buffer is in the context. Especially sync selection and
  select mode belonged there anyway as this cannot work correct with
  different spaces having different settings anyway.

* Image paint is not back yet, did not want to put that together with
  uvedit because there's really no code sharing.. perhaps vertex paint,
  image paint and sculpt would be good to have in one module to share
  brush code, partial redraw, etc better.

1 files changed, 97 insertions, 0 deletions

diff --git a/source/blender/editors/uvedit/uvedit_parametrizer.h b/source/blender/editors/uvedit/uvedit_parametrizer.h
new file mode 100644
index 00000000000..c468b8d62c5
--- /dev/null
+++ b/source/blender/editors/uvedit/uvedit_parametrizer.h
@@ -0,0 +1,97 @@
+
+#ifndef __PARAMETRIZER_H__
+#define __PARAMETRIZER_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+	
+#include "BLO_sys_types.h" // for intptr_t support
+
+typedef void ParamHandle;	/* handle to a set of charts */
+typedef intptr_t ParamKey;		/* (hash) key for identifying verts and faces */
+typedef enum ParamBool {
+	PARAM_TRUE = 1,
+	PARAM_FALSE = 0
+} ParamBool;
+
+/* Chart construction:
+   -------------------
+   - faces and seams may only be added between construct_{begin|end}
+   - the pointers to co and uv are stored, rather than being copied
+   - vertices are implicitly created
+   - in construct_end the mesh will be split up according to the seams
+   - the resulting charts must be:
+      - manifold, connected, open (at least one boundary loop)
+   - output will be written to the uv pointers
+*/
+
+ParamHandle *param_construct_begin();
+
+void param_aspect_ratio(ParamHandle *handle, float aspx, float aspy);
+
+void param_face_add(ParamHandle *handle,
+                    ParamKey key,
+                    int nverts,	
+                    ParamKey *vkeys,
+                    float **co,
+                    float **uv,
+					ParamBool *pin,
+					ParamBool *select);
+
+void param_edge_set_seam(ParamHandle *handle,
+                         ParamKey *vkeys);
+
+void param_construct_end(ParamHandle *handle, ParamBool fill, ParamBool impl);
+void param_delete(ParamHandle *chart);
+
+/* Least Squares Conformal Maps:
+   -----------------------------
+   - charts with less than two pinned vertices are assigned 2 pins
+   - lscm is divided in three steps:
+      - begin: compute matrix and it's factorization (expensive)
+      - solve using pinned coordinates (cheap)
+	  - end: clean up 
+	- uv coordinates are allowed to change within begin/end, for
+	  quick re-solving
+*/
+
+void param_lscm_begin(ParamHandle *handle, ParamBool live, ParamBool abf);
+void param_lscm_solve(ParamHandle *handle);
+void param_lscm_end(ParamHandle *handle);
+
+/* Stretch */
+
+void param_stretch_begin(ParamHandle *handle);
+void param_stretch_blend(ParamHandle *handle, float blend);
+void param_stretch_iter(ParamHandle *handle);
+void param_stretch_end(ParamHandle *handle);
+
+/* Area Smooth */
+
+void param_smooth_area(ParamHandle *handle);
+
+/* Packing */
+
+void param_pack(ParamHandle *handle);
+
+/* Average area for all charts */
+
+void param_average(ParamHandle *handle);
+
+/* Simple x,y scale */
+
+void param_scale(ParamHandle *handle, float x, float y);
+
+/* Flushing */
+
+void param_flush(ParamHandle *handle);
+void param_flush_restore(ParamHandle *handle);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*__PARAMETRIZER_H__*/
+