New Grease Pencil object for 2D animation

This commit merge the full development done in greasepencil-object branch and include mainly the following features.

- New grease pencil object.
- New drawing engine.
- New grease pencil modes Draw/Sculpt/Edit and Weight Paint.
- New brushes for grease pencil.
- New modifiers for grease pencil.
- New shaders FX.
- New material system (replace old palettes and colors).
- Split of annotations (old grease pencil) and new grease pencil object.
- UI adapted to blender 2.8.

You can get more info here:

https://code.blender.org/2017/12/drawing-2d-animation-in-blender-2-8/
https://code.blender.org/2018/07/grease-pencil-status-update/

This is the result of nearly two years of development and I want thanks firstly the other members of the grease pencil team: Daniel M. Lara, Matias Mendiola and Joshua Leung for their support, ideas and to keep working in the project all the time, without them this project had been impossible.

Also, I want thanks other Blender developers for their help, advices and to be there always to help me, and specially to Clément Foucault, Dalai Felinto, Pablo Vázquez and Campbell Barton.

1 files changed, 134 insertions, 0 deletions

diff --git a/release/scripts/startup/bl_ui/properties_data_shaderfx.py b/release/scripts/startup/bl_ui/properties_data_shaderfx.py
new file mode 100644
index 00000000000..5010f56d234
--- /dev/null
+++ b/release/scripts/startup/bl_ui/properties_data_shaderfx.py
@@ -0,0 +1,134 @@
+# ##### BEGIN GPL LICENSE BLOCK #####
+#
+#  This program is free software; you can redistribute it and/or
+#  modify it under the terms of the GNU General Public License
+#  as published by the Free Software Foundation; either version 2
+#  of the License, or (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program; if not, write to the Free Software Foundation,
+#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+#
+# ##### END GPL LICENSE BLOCK #####
+
+# <pep8 compliant>
+import bpy
+from bpy.types import Panel
+from bpy.app.translations import pgettext_iface as iface_
+
+
+class ShaderFxButtonsPanel:
+    bl_space_type = 'PROPERTIES'
+    bl_region_type = 'WINDOW'
+    bl_context = "shaderfx"
+    bl_options = {'HIDE_HEADER'}
+
+class DATA_PT_shader_fx(ShaderFxButtonsPanel, Panel):
+    bl_label = "Effects"
+
+    @classmethod
+    def poll(cls, context):
+        return True
+        ob = context.object
+        return ob and ob.type == 'GPENCIL'
+
+    def draw(self, context):
+        layout = self.layout
+        layout.use_property_split = True
+
+        ob = context.object
+
+        layout.operator_menu_enum("object.shaderfx_add", "type")
+
+        for fx in ob.shader_effects:
+            box = layout.template_shaderfx(fx)
+            if box:
+                # match enum type to our functions, avoids a lookup table.
+                getattr(self, fx.type)(box, fx)
+
+    # the mt.type enum is (ab)used for a lookup on function names
+    # ...to avoid lengthy if statements
+    # so each type must have a function here.
+
+    def FX_BLUR(self, layout, fx):
+
+        layout.prop(fx, "factor", text="Factor")
+        layout.prop(fx, "samples", text="Samples")
+
+        layout.separator()
+        layout.prop(fx, "use_dof_mode")
+        if fx.use_dof_mode:
+            layout.prop(fx, "coc")
+
+    def FX_COLORIZE(self, layout, fx):
+        layout.prop(fx, "mode", text="Mode")
+
+        if fx.mode == 'BITONE':
+            layout.prop(fx, "low_color", text="Low Color")
+        if fx.mode == 'CUSTOM':
+            layout.prop(fx, "low_color", text="Color")
+
+        if fx.mode == 'BITONE':
+            layout.prop(fx, "high_color", text="High Color")
+
+        if fx.mode in {'BITONE', 'CUSTOM', 'TRANSPARENT'}:
+            layout.prop(fx, "factor")
+
+    def FX_WAVE(self, layout,fx):
+        layout.prop(fx, "orientation", expand=True)
+
+        layout.separator()
+        layout.prop(fx, "amplitude")
+        layout.prop(fx, "period")
+        layout.prop(fx, "phase")
+
+    def FX_PIXEL(self, layout, fx):
+        layout.prop(fx, "size", text="Size")
+
+        layout.prop(fx, "use_lines", text="Display Lines")
+
+        col = layout.column()
+        col.enabled = fx.use_lines
+        col.prop(fx, "color")
+
+    def FX_RIM(self, layout, fx):
+        layout.prop(fx, "offset", text="Offset")
+
+        layout.prop(fx, "rim_color")
+        layout.prop(fx, "mask_color")
+        layout.prop(fx, "mode")
+        layout.prop(fx, "blur")
+        layout.prop(fx, "samples")
+
+    def FX_SWIRL(self, layout, fx):
+        layout.prop(fx, "object", text="Object")
+
+        layout.prop(fx, "radius")
+        layout.prop(fx, "angle")
+
+        layout.prop(fx, "transparent")
+
+    def FX_FLIP(self, layout, fx):
+        layout.prop(fx, "flip_horizontal")
+        layout.prop(fx, "flip_vertical")
+
+    def FX_LIGHT(self, layout, fx):
+        layout.prop(fx, "object", text="Object")
+
+        layout.prop(fx, "energy")
+        layout.prop(fx, "ambient")
+
+
+classes = (
+    DATA_PT_shader_fx,
+)
+
+if __name__ == "__main__":  # only for live edit.
+    from bpy.utils import register_class
+    for cls in classes:
+        register_class(cls)