131 lines
4.9 KiB
Python
131 lines
4.9 KiB
Python
import bpy
|
|
from time import time
|
|
|
|
from mathutils.geometry import (barycentric_transform,
|
|
intersect_line_plane)
|
|
|
|
from ..utils import (triangle_normal,
|
|
get_gp_draw_plane)
|
|
|
|
from .operators import GP_OT_interpolate_stroke_base
|
|
|
|
|
|
class GP_OT_interpolate_stroke_tri(GP_OT_interpolate_stroke_base):
|
|
bl_idname = "gp.interpolate_stroke_tri"
|
|
bl_label = "Interpolate Stroke"
|
|
bl_description = 'Interpolate Stroke based on user bound triangle'
|
|
bl_options = {'REGISTER', 'UNDO'}
|
|
|
|
def invoke(self, context, event):
|
|
if state := super().invoke(context, event):
|
|
return state
|
|
|
|
if not context.window_manager.get(f'tri_{self.gp.name}'):
|
|
return self.exit(context, status='ERROR', text='Need to bind coordinate first. Use "Bind Tri Point" button')
|
|
|
|
scn = bpy.context.scene
|
|
|
|
origin = scn.camera.matrix_world.to_translation()
|
|
|
|
tgt_strokes = self.get_stroke_to_interpolate(context)
|
|
if isinstance(tgt_strokes, set):
|
|
return tgt_strokes
|
|
|
|
## Prepare context manager
|
|
attrs = [
|
|
# (context.view_layer.objects, 'active', self.gp),
|
|
(context.tool_settings, 'use_keyframe_insert_auto', True),
|
|
# (bpy.context.scene.render, 'simplify_subdivision', 0),
|
|
]
|
|
self.apply_and_store(attrs)
|
|
|
|
point_dict = context.window_manager.get(f'tri_{self.gp.name}')
|
|
## point_dict -> {'0': {'object': object_name_as_str, 'index': 450}, ...}
|
|
## Get triangle dumped in context.window_manager
|
|
self.source_object_list = [bpy.context.scene.objects.get(point_dict[str(i)]['object']) for i in range(3)]
|
|
self.source_tri_indices = [point_dict[str(i)]['index'] for i in range(3)] # List of vertices index corresponding to tri coordinates
|
|
|
|
dg = bpy.context.evaluated_depsgraph_get()
|
|
|
|
## Get tri at source frame
|
|
tri = []
|
|
for source_obj, idx in zip(self.source_object_list, self.source_tri_indices):
|
|
ob_eval = source_obj.evaluated_get(dg)
|
|
tri.append(ob_eval.matrix_world @ ob_eval.data.vertices[idx].co)
|
|
|
|
self.strokes_data = []
|
|
|
|
for stroke in tgt_strokes:
|
|
stroke_data = []
|
|
for point in stroke.points:
|
|
point_co_world = self.gp.matrix_world @ point.co
|
|
|
|
## Set hit location at same coordinate as point
|
|
# hit_location = point_co_world
|
|
|
|
## Set hit location on tri plane
|
|
hit_location = intersect_line_plane(origin, point_co_world, tri[0], triangle_normal(*tri))
|
|
|
|
stroke_data.append((hit_location, tri))
|
|
|
|
self.strokes_data.append(stroke_data)
|
|
|
|
if self.debug:
|
|
self.scan_time = time()-self.start
|
|
print(f'Scan time {self.scan_time:.4f}s')
|
|
|
|
# Ensure whole stroke are selected before copy
|
|
bpy.ops.gpencil.select_linked()
|
|
# Copy stroke selection
|
|
bpy.ops.gpencil.copy()
|
|
|
|
# Jump frame and paste
|
|
# if self.report_progress:
|
|
# context.window_manager.progress_begin(self.frames_to_jump[0], self.frames_to_jump[-1]) # Pgs
|
|
# context.area.header_text_set('Starting interpolation | Esc: Cancel')
|
|
|
|
context.window_manager.modal_handler_add(self)
|
|
return {'RUNNING_MODAL'}
|
|
|
|
def interpolate_frame(self, context):
|
|
scn = context.scene
|
|
origin = scn.camera.matrix_world.to_translation()
|
|
plane_co, plane_no = get_gp_draw_plane(self.gp)
|
|
bpy.ops.gpencil.paste()
|
|
|
|
dg = bpy.context.evaluated_depsgraph_get()
|
|
|
|
## List of newly pasted strokes (using range)
|
|
new_strokes = self.gp.data.layers.active.active_frame.strokes[-len(self.strokes_data):]
|
|
|
|
## Get user triangle position at current frame
|
|
tri_b = []
|
|
for source_obj, idx in zip(self.source_object_list, self.source_tri_indices):
|
|
ob_eval = source_obj.evaluated_get(dg)
|
|
tri_b.append(ob_eval.matrix_world @ ob_eval.data.vertices[idx].co)
|
|
|
|
for new_stroke, stroke_data in zip(list(new_strokes), list(self.strokes_data)):
|
|
world_co_3d = []
|
|
for hit_location, tri_a in stroke_data:
|
|
new_loc = barycentric_transform(hit_location, *tri_a, *tri_b)
|
|
world_co_3d.append(new_loc)
|
|
|
|
## Reproject on plane
|
|
new_world_co_3d = [intersect_line_plane(origin, p, plane_co, plane_no) for p in world_co_3d]
|
|
new_local_co_3d = [co for coord in new_world_co_3d for co in self.gp.matrix_world.inverted() @ coord]
|
|
new_stroke.points.foreach_set('co', new_local_co_3d)
|
|
new_stroke.points.update()
|
|
|
|
classes = (
|
|
GP_OT_interpolate_stroke_tri,
|
|
)
|
|
|
|
def register():
|
|
for c in classes:
|
|
bpy.utils.register_class(c)
|
|
|
|
|
|
def unregister():
|
|
for c in reversed(classes):
|
|
bpy.utils.unregister_class(c)
|