2025-07-01

2026-03-17 14:30:01 -06:00
parent f9a22056dd
commit 62b5978595
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+'''
+Copyright (C) 2023 CG Cookie
+http://cgcookie.com
+hello@cgcookie.com
+
+Created by Jonathan Denning, Jonathan Williamson
+
+    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 3 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, see <http://www.gnu.org/licenses/>.
+'''
+
+import math
+import random
+from mathutils import Matrix, Vector
+
+from ..rfwidget import RFWidget
+
+from ...addon_common.common import gpustate
+from ...addon_common.common.fsm import FSM
+from ...addon_common.common.globals import Globals
+from ...addon_common.common.blender import tag_redraw_all
+from ...addon_common.common.drawing import DrawCallbacks
+from ...addon_common.common.maths import Vec, Point, Point2D, Direction, Color
+from ...config.options import themes
+
+
+'''
+RFWidget_LineCut handles a line cut in screen space.
+When cutting, a line segment is drawn from mouse down to current mouse position with a small circle at the very center
+'''
+
+class RFWidget_LineCut_Factory:
+    '''
+    This function is a class factory.  It is needed, because the FSM is shared across instances.
+    RFTools might need to share RFWidgets that are independent of each other.
+    '''
+
+    @staticmethod
+    def create(action_name, line_color=None, circle_color=Color((1,1,1,0.5)), circle_border_color=Color((0,0,0,0.5))):
+        class RFWidget_LineCut(RFWidget):
+            rfw_name = 'Line'
+            rfw_cursor = 'CROSSHAIR'
+
+            @RFWidget.on_init
+            def init(self):
+                self.action_name = action_name
+                self.line2D = [None, None]
+                self.line_color = line_color
+                self.circle_color = circle_color
+                self.circle_border_color = circle_border_color
+
+            @FSM.on_state('main')
+            def modal_main(self):
+                if self.actions.pressed('insert'):
+                    return 'line'
+
+            @FSM.on_state('line', 'enter')
+            def modal_line_enter(self):
+                self.line2D = [self.actions.mouse, None]
+                tag_redraw_all('Line line_enter')
+
+            @FSM.on_state('line')
+            def modal_line(self):
+                if self.actions.released('insert'):
+                    self.callback_actions(self.action_name)
+                    return 'main'
+
+                if self.actions.pressed('cancel'):
+                    self.line2D = [None, None]
+                    self.actions.unuse('insert', ignoremods=True, ignoremulti=True)
+                    return 'main'
+
+                if self.line2D[1] != self.actions.mouse:
+                    self.line2D[1] = self.actions.mouse
+                    tag_redraw_all('Line line')
+                    self.callback_actioning(self.action_name)
+
+            @FSM.on_state('line', 'exit')
+            def modal_line_exit(self):
+                tag_redraw_all('Line line_exit')
+
+            @DrawCallbacks.on_draw('post2d')
+            @FSM.onlyinstate('line')
+            def draw_line(self):
+                #cr,cg,cb,ca = self.line_color
+                p0,p1 = self.line2D
+                if not p0 or not p1: return
+                ctr = p0 + (p1-p0)/2
+
+                gpustate.blend('ALPHA')
+                Globals.drawing.draw2D_line(p0, p1, self.line_color or themes['stroke'], width=2, stipple=[2, 2])  # self.line_color)
+                Globals.drawing.draw2D_circle(ctr, 10, self.circle_border_color, width=3) # dark rim
+                Globals.drawing.draw2D_circle(ctr, 10, self.circle_color, width=1) # light center
+
+        return RFWidget_LineCut
+