Magic UV: Release v5.0

* Add features
  - Align UV Cursor
  - UV Cursor Location
  - Align UV
  - Smooth UV
  - UV Inspection
  - Select UV
  - Texture Wrap
  - UV Sculpt
* Improve features
  - Copy/Paste UV: Add menu to UV/Image Editor
  - World Scale UV: Add information about Texel Density
  - UV Bounding Box: Add option "Bound"
  - Texture Projection: Add option "Assign UVMap"
  - UVW: Add option "Assign UVMap"
* Improve UI
* Fixed bugs
* Optimization/Refactoring

1 files changed, 124 insertions, 0 deletions

diff --git a/uv_magic_uv/op/unwrap_constraint.py b/uv_magic_uv/op/unwrap_constraint.py
new file mode 100644
index 00000000..311b2c35
--- /dev/null
+++ b/uv_magic_uv/op/unwrap_constraint.py
@@ -0,0 +1,124 @@
+# ##### 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 #####
+
+__author__ = "Nutti <nutti.metro@gmail.com>"
+__status__ = "production"
+__version__ = "5.0"
+__date__ = "16 Feb 2018"
+
+import bpy
+import bmesh
+from bpy.props import (
+    BoolProperty,
+    EnumProperty,
+    FloatProperty,
+)
+
+from .. import common
+
+
+class MUV_UnwrapConstraint(bpy.types.Operator):
+    """
+    Operation class: Unwrap with constrain UV coordinate
+    """
+
+    bl_idname = "uv.muv_unwrap_constraint"
+    bl_label = "Unwrap Constraint"
+    bl_description = "Unwrap while keeping uv coordinate"
+    bl_options = {'REGISTER', 'UNDO'}
+
+    # property for original unwrap
+    method = EnumProperty(
+        name="Method",
+        description="Unwrapping method",
+        items=[
+            ('ANGLE_BASED', 'Angle Based', 'Angle Based'),
+            ('CONFORMAL', 'Conformal', 'Conformal')
+        ],
+        default='ANGLE_BASED')
+    fill_holes = BoolProperty(
+        name="Fill Holes",
+        description="Virtual fill holes in meshes before unwrapping",
+        default=True)
+    correct_aspect = BoolProperty(
+        name="Correct Aspect",
+        description="Map UVs taking image aspect ratio into account",
+        default=True)
+    use_subsurf_data = BoolProperty(
+        name="Use Subsurf Modifier",
+        description="""Map UVs taking vertex position after subsurf
+                       into account""",
+        default=False)
+    margin = FloatProperty(
+        name="Margin",
+        description="Space between islands",
+        max=1.0,
+        min=0.0,
+        default=0.001)
+
+    # property for this operation
+    u_const = BoolProperty(
+        name="U-Constraint",
+        description="Keep UV U-axis coordinate",
+        default=False
+    )
+    v_const = BoolProperty(
+        name="V-Constraint",
+        description="Keep UV V-axis coordinate",
+        default=False
+    )
+
+    def execute(self, _):
+        obj = bpy.context.active_object
+        bm = bmesh.from_edit_mesh(obj.data)
+        if common.check_version(2, 73, 0) >= 0:
+            bm.faces.ensure_lookup_table()
+
+        # bpy.ops.uv.unwrap() makes one UV map at least
+        if not bm.loops.layers.uv:
+            self.report({'WARNING'}, "Object must have more than one UV map")
+            return {'CANCELLED'}
+        uv_layer = bm.loops.layers.uv.verify()
+
+        # get original UV coordinate
+        faces = [f for f in bm.faces if f.select]
+        uv_list = []
+        for f in faces:
+            uvs = [l[uv_layer].uv.copy() for l in f.loops]
+            uv_list.append(uvs)
+
+        # unwrap
+        bpy.ops.uv.unwrap(
+            method=self.method,
+            fill_holes=self.fill_holes,
+            correct_aspect=self.correct_aspect,
+            use_subsurf_data=self.use_subsurf_data,
+            margin=self.margin)
+
+        # when U/V-Constraint is checked, revert original coordinate
+        for f, uvs in zip(faces, uv_list):
+            for l, uv in zip(f.loops, uvs):
+                if self.u_const:
+                    l[uv_layer].uv.x = uv.x
+                if self.v_const:
+                    l[uv_layer].uv.y = uv.y
+
+        # update mesh
+        bmesh.update_edit_mesh(obj.data)
+
+        return {'FINISHED'}