diff options
Diffstat (limited to 'uv_magic_uv/op/smooth_uv.py')
| -rw-r--r-- | uv_magic_uv/op/smooth_uv.py | 196 |
1 files changed, 187 insertions, 9 deletions
diff --git a/uv_magic_uv/op/smooth_uv.py b/uv_magic_uv/op/smooth_uv.py index d448d108..83a4a1a5 100644 --- a/uv_magic_uv/op/smooth_uv.py +++ b/uv_magic_uv/op/smooth_uv.py @@ -25,10 +25,35 @@ __date__ = "17 Nov 2018" import bpy from bpy.props import BoolProperty, FloatProperty +import bmesh +from .. import common from ..utils.bl_class_registry import BlClassRegistry from ..utils.property_class_registry import PropertyClassRegistry -from ..impl import smooth_uv_impl as impl +from ..utils import compatibility as compat + + +def _is_valid_context(context): + obj = context.object + + # only edit mode is allowed to execute + if obj is None: + return False + if obj.type != 'MESH': + return False + if context.object.mode != 'EDIT': + return False + + # 'IMAGE_EDITOR' and 'VIEW_3D' space is allowed to execute. + # If 'View_3D' space is not allowed, you can't find option in Tool-Shelf + # after the execution + for space in context.area.spaces: + if (space.type == 'IMAGE_EDITOR') or (space.type == 'VIEW_3D'): + break + else: + return False + + return True @PropertyClassRegistry() @@ -69,6 +94,7 @@ class _Properties: @BlClassRegistry() +@compat.make_annotations class MUV_OT_SmoothUV(bpy.types.Operator): bl_idname = "uv.muv_smooth_uv_operator" @@ -76,30 +102,182 @@ class MUV_OT_SmoothUV(bpy.types.Operator): bl_description = "Smooth UV coordinates" bl_options = {'REGISTER', 'UNDO'} - transmission: BoolProperty( + transmission = BoolProperty( name="Transmission", description="Smooth linked UVs", default=False ) - mesh_infl: FloatProperty( + mesh_infl = FloatProperty( name="Mesh Influence", description="Influence rate of mesh vertex", min=0.0, max=1.0, default=0.0 ) - select: BoolProperty( + select = BoolProperty( name="Select", description="Select UVs which are smoothed", default=False ) - def __init__(self): - self.__impl = impl.SmoothUVImpl() - @classmethod def poll(cls, context): - return impl.SmoothUVImpl.poll(context) + # we can not get area/space/region from console + if common.is_console_mode(): + return True + return _is_valid_context(context) + + def __smooth_wo_transmission(self, loop_seqs, uv_layer): + # calculate path length + loops = [] + for hseq in loop_seqs: + loops.extend([hseq[0][0], hseq[0][1]]) + full_vlen = 0 + accm_vlens = [0.0] + full_uvlen = 0 + accm_uvlens = [0.0] + orig_uvs = [loop_seqs[0][0][0][uv_layer].uv.copy()] + for l1, l2 in zip(loops[:-1], loops[1:]): + diff_v = l2.vert.co - l1.vert.co + full_vlen = full_vlen + diff_v.length + accm_vlens.append(full_vlen) + diff_uv = l2[uv_layer].uv - l1[uv_layer].uv + full_uvlen = full_uvlen + diff_uv.length + accm_uvlens.append(full_uvlen) + orig_uvs.append(l2[uv_layer].uv.copy()) + + for hidx, hseq in enumerate(loop_seqs): + pair = hseq[0] + for pidx, l in enumerate(pair): + if self.select: + l[uv_layer].select = True + + # ignore start/end loop + if (hidx == 0 and pidx == 0) or\ + ((hidx == len(loop_seqs) - 1) and (pidx == len(pair) - 1)): + continue + + # calculate target path length + # target = no influenced * (1 - infl) + influenced * infl + tgt_noinfl = full_uvlen * (hidx + pidx) / (len(loop_seqs)) + tgt_infl = full_uvlen * accm_vlens[hidx * 2 + pidx] / full_vlen + target_length = tgt_noinfl * (1 - self.mesh_infl) + \ + tgt_infl * self.mesh_infl + + # get target UV + for i in range(len(accm_uvlens[:-1])): + # get line segment which UV will be placed + if ((accm_uvlens[i] <= target_length) and + (accm_uvlens[i + 1] > target_length)): + tgt_seg_len = target_length - accm_uvlens[i] + seg_len = accm_uvlens[i + 1] - accm_uvlens[i] + uv1 = orig_uvs[i] + uv2 = orig_uvs[i + 1] + target_uv = uv1 + (uv2 - uv1) * tgt_seg_len / seg_len + break + else: + self.report({'ERROR'}, "Failed to get target UV") + return {'CANCELLED'} + + # update UV + l[uv_layer].uv = target_uv + + def __smooth_w_transmission(self, loop_seqs, uv_layer): + # calculate path length + loops = [] + for vidx in range(len(loop_seqs[0])): + ls = [] + for hseq in loop_seqs: + ls.extend(hseq[vidx]) + loops.append(ls) + + orig_uvs = [] + accm_vlens = [] + full_vlens = [] + accm_uvlens = [] + full_uvlens = [] + for ls in loops: + full_v = 0.0 + accm_v = [0.0] + full_uv = 0.0 + accm_uv = [0.0] + uvs = [ls[0][uv_layer].uv.copy()] + for l1, l2 in zip(ls[:-1], ls[1:]): + diff_v = l2.vert.co - l1.vert.co + full_v = full_v + diff_v.length + accm_v.append(full_v) + diff_uv = l2[uv_layer].uv - l1[uv_layer].uv + full_uv = full_uv + diff_uv.length + accm_uv.append(full_uv) + uvs.append(l2[uv_layer].uv.copy()) + accm_vlens.append(accm_v) + full_vlens.append(full_v) + accm_uvlens.append(accm_uv) + full_uvlens.append(full_uv) + orig_uvs.append(uvs) + + for hidx, hseq in enumerate(loop_seqs): + for vidx, (pair, uvs, accm_v, full_v, accm_uv, full_uv)\ + in enumerate(zip(hseq, orig_uvs, accm_vlens, full_vlens, + accm_uvlens, full_uvlens)): + for pidx, l in enumerate(pair): + if self.select: + l[uv_layer].select = True + + # ignore start/end loop + if hidx == 0 and pidx == 0: + continue + if hidx == len(loop_seqs) - 1 and pidx == len(pair) - 1: + continue + + # calculate target path length + # target = no influenced * (1 - infl) + influenced * infl + tgt_noinfl = full_uv * (hidx + pidx) / (len(loop_seqs)) + tgt_infl = full_uv * accm_v[hidx * 2 + pidx] / full_v + target_length = tgt_noinfl * (1 - self.mesh_infl) + \ + tgt_infl * self.mesh_infl + + # get target UV + for i in range(len(accm_uv[:-1])): + # get line segment to be placed + if ((accm_uv[i] <= target_length) and + (accm_uv[i + 1] > target_length)): + tgt_seg_len = target_length - accm_uv[i] + seg_len = accm_uv[i + 1] - accm_uv[i] + uv1 = uvs[i] + uv2 = uvs[i + 1] + target_uv = uv1 +\ + (uv2 - uv1) * tgt_seg_len / seg_len + break + else: + self.report({'ERROR'}, "Failed to get target UV") + return {'CANCELLED'} + + # update UV + l[uv_layer].uv = target_uv + + def __smooth(self, loop_seqs, uv_layer): + if self.transmission: + self.__smooth_w_transmission(loop_seqs, uv_layer) + else: + self.__smooth_wo_transmission(loop_seqs, uv_layer) def execute(self, context): - return self.__impl.execute(self, context) + obj = context.active_object + bm = bmesh.from_edit_mesh(obj.data) + if common.check_version(2, 73, 0) >= 0: + bm.faces.ensure_lookup_table() + uv_layer = bm.loops.layers.uv.verify() + + # loop_seqs[horizontal][vertical][loop] + loop_seqs, error = common.get_loop_sequences(bm, uv_layer) + if not loop_seqs: + self.report({'WARNING'}, error) + return {'CANCELLED'} + + # smooth + self.__smooth(loop_seqs, uv_layer) + + bmesh.update_edit_mesh(obj.data) + + return {'FINISHED'} |