GP: New Cutter, Constraints and Segment selection

This commit groups a set of new tools that were tested in grease pencil object branch before moving to master. We decide to do all the development in a separated branch because it could break master during days or weeks before the new tools were ready to deploy.

The commit includes:

- New Cutter tool to trim strokes and help cleaning up drawings.

- New set of constraints and guides to draw different types of shapes. All the credits for this development goes to Charlie Jolly (@charlie), thanks for your help!

- Segment selection mode to select strokes between intersections.

- New operator to change strokes cap mode.

- New option to display only keyframed frames. This option is very important when fill strokes with color.

- Multiple small fixes and tweaks.

Thanks to @pepeland and @mendio for their ideas, tests, reviews and support.

Note: Still pending the final icons for Cutter in Toolbar and Segment Selection in Topbar. @billreynish could help us here?

1 files changed, 2 insertions, 0 deletions

diff --git a/source/blender/blenkernel/intern/scene.c b/source/blender/blenkernel/intern/scene.c
index ca33abd3245..1bae41ce035 100644
--- a/source/blender/blenkernel/intern/scene.c
+++ b/source/blender/blenkernel/intern/scene.c
@@ -715,6 +715,8 @@ void BKE_scene_init(Scene *sce)
 	        CURVE_PRESET_BELL,
 	        CURVEMAP_SLOPE_POSITIVE);
 
+	sce->toolsettings->gp_sculpt.guide.spacing = 20.0f;
+
 	sce->physics_settings.gravity[0] = 0.0f;
 	sce->physics_settings.gravity[1] = 0.0f;
 	sce->physics_settings.gravity[2] = -9.81f;