mirror of
https://git.mirrors.martin98.com/https://github.com/Ultimaker/Cura
synced 2025-10-09 12:56:32 +08:00
145 lines
5.2 KiB
Python
145 lines
5.2 KiB
Python
# Copyright (c) 2025 UltiMaker
|
|
# Cura is released under the terms of the LGPLv3 or higher.
|
|
|
|
from typing import cast, Optional
|
|
|
|
import numpy
|
|
from PyQt6.QtCore import Qt
|
|
|
|
from UM.Application import Application
|
|
from UM.Event import Event, MouseEvent, KeyEvent
|
|
from UM.Scene.Selection import Selection
|
|
from UM.Tool import Tool
|
|
from cura.PickingPass import PickingPass
|
|
|
|
|
|
class PaintTool(Tool):
|
|
"""Provides the tool to paint meshes.
|
|
"""
|
|
|
|
def __init__(self) -> None:
|
|
super().__init__()
|
|
|
|
self._shortcut_key = Qt.Key.Key_P
|
|
|
|
self._node_cache = None
|
|
self._mesh_transformed_cache = None
|
|
self._cache_dirty = True
|
|
|
|
@staticmethod
|
|
def _get_intersect_ratio_via_pt(a, pt, b, c) -> float:
|
|
# compute the intersection of (param) A - pt with (param) B - (param) C
|
|
|
|
# compute unit vectors of directions of lines A and B
|
|
udir_a = a - pt
|
|
udir_a /= numpy.linalg.norm(udir_a)
|
|
udir_b = b - c
|
|
udir_b /= numpy.linalg.norm(udir_b)
|
|
|
|
# find unit direction vector for line C, which is perpendicular to lines A and B
|
|
udir_res = numpy.cross(udir_b, udir_a)
|
|
udir_res /= numpy.linalg.norm(udir_res)
|
|
|
|
# solve system of equations
|
|
rhs = b - a
|
|
lhs = numpy.array([udir_a, -udir_b, udir_res]).T
|
|
solved = numpy.linalg.solve(lhs, rhs)
|
|
|
|
# get the ratio
|
|
intersect = ((a + solved[0] * udir_a) + (b + solved[1] * udir_b)) * 0.5
|
|
return numpy.linalg.norm(pt - intersect) / numpy.linalg.norm(a - intersect)
|
|
|
|
def _nodeTransformChanged(self, *args) -> None:
|
|
self._cache_dirty = True
|
|
|
|
def event(self, event: Event) -> bool:
|
|
"""Handle mouse and keyboard events.
|
|
|
|
:param event: The event to handle.
|
|
:return: Whether this event has been caught by this tool (True) or should
|
|
be passed on (False).
|
|
"""
|
|
super().event(event)
|
|
|
|
controller = Application.getInstance().getController()
|
|
|
|
# Make sure the displayed values are updated if the bounding box of the selected mesh(es) changes
|
|
if event.type == Event.ToolActivateEvent:
|
|
controller.setActiveStage("PrepareStage")
|
|
controller.setActiveView("PaintTool") # Because that's the plugin-name, and the view is registered to it.
|
|
return True
|
|
|
|
if event.type == Event.ToolDeactivateEvent:
|
|
controller.setActiveStage("PrepareStage")
|
|
controller.setActiveView("SolidView")
|
|
return True
|
|
|
|
if event.type == Event.KeyPressEvent and cast(KeyEvent, event).key == KeyEvent.ShiftKey:
|
|
return False
|
|
|
|
if event.type == Event.MousePressEvent and self._controller.getToolsEnabled():
|
|
if MouseEvent.LeftButton not in cast(MouseEvent, event).buttons:
|
|
return False
|
|
if not self._selection_pass:
|
|
return False
|
|
|
|
camera = self._controller.getScene().getActiveCamera()
|
|
if not camera:
|
|
return False
|
|
|
|
node = Selection.getAllSelectedObjects()[0]
|
|
if node is None:
|
|
return False
|
|
|
|
if node != self._node_cache:
|
|
if self._node_cache is not None:
|
|
self._node_cache.transformationChanged.disconnect(self._nodeTransformChanged)
|
|
self._node_cache = node
|
|
self._node_cache.transformationChanged.connect(self._nodeTransformChanged)
|
|
if self._cache_dirty:
|
|
self._cache_dirty = False
|
|
self._mesh_transformed_cache = self._node_cache.getMeshDataTransformed()
|
|
if not self._mesh_transformed_cache:
|
|
return False
|
|
|
|
evt = cast(MouseEvent, event)
|
|
|
|
self._selection_pass.renderFacesMode()
|
|
face_id = self._selection_pass.getFaceIdAtPosition(evt.x, evt.y)
|
|
if face_id < 0:
|
|
return False
|
|
|
|
ppass = PickingPass(camera.getViewportWidth(), camera.getViewportHeight())
|
|
ppass.render()
|
|
pt = ppass.getPickedPosition(evt.x, evt.y).getData()
|
|
|
|
va, vb, vc = self._mesh_transformed_cache.getFaceNodes(face_id)
|
|
ta, tb, tc = node.getMeshData().getFaceUvCoords(face_id)
|
|
|
|
# 'Weight' of each vertex that would produce point pt, so we can generate the texture coordinates from the uv ones of the vertices.
|
|
# See (also) https://mathworld.wolfram.com/BarycentricCoordinates.html
|
|
wa = PaintTool._get_intersect_ratio_via_pt(va, pt, vb, vc)
|
|
wb = PaintTool._get_intersect_ratio_via_pt(vb, pt, vc, va)
|
|
wc = PaintTool._get_intersect_ratio_via_pt(vc, pt, va, vb)
|
|
wt = wa + wb + wc
|
|
wa /= wt
|
|
wb /= wt
|
|
wc /= wt
|
|
texcoords = wa * ta + wb * tb + wc * tc
|
|
|
|
paintview = controller.getActiveView()
|
|
if paintview.getPluginId() != "PaintTool":
|
|
return False
|
|
paintview.setUvPixel(texcoords[0], texcoords[1], [255, 128, 0, 255])
|
|
|
|
return True
|
|
|
|
if event.type == Event.MouseMoveEvent:
|
|
evt = cast(MouseEvent, event)
|
|
return False #True
|
|
|
|
if event.type == Event.MouseReleaseEvent:
|
|
return False #True
|
|
|
|
return False
|