mirror of
https://git.mirrors.martin98.com/https://github.com/Ultimaker/Cura
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704f9453f0
The most important thing to make it work is actually notifying the scene that something has changed -- the rest are just refactorings and (hopefully) optimizations. part of CURA-12543
224 lines
8.2 KiB
Python
224 lines
8.2 KiB
Python
# Copyright (c) 2025 UltiMaker
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# Cura is released under the terms of the LGPLv3 or higher.
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from copy import deepcopy
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import numpy
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from PyQt6.QtCore import Qt
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from typing import cast, Dict, List, Optional, Tuple
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from UM.Application import Application
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from UM.Event import Event, MouseEvent, KeyEvent
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from UM.Logger import Logger
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from UM.Scene.SceneNode import SceneNode
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from UM.Scene.Selection import Selection
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from UM.Tool import Tool
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from UM.View.View import View
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from cura.PickingPass import PickingPass
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class PaintTool(Tool):
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"""Provides the tool to paint meshes.
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"""
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def __init__(self) -> None:
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super().__init__()
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self._picking_pass: Optional[PickingPass] = None
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self._shortcut_key: Qt.Key = Qt.Key.Key_P
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self._node_cache: Optional[SceneNode] = None
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self._mesh_transformed_cache = None
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self._cache_dirty: bool = True
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self._color_str_to_rgba: Dict[str, List[int]] = {
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"A": [192, 0, 192, 255],
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"B": [232, 128, 0, 255],
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"C": [0, 255, 0, 255],
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"D": [255, 255, 255, 255],
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}
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self._brush_size: int = 10
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self._brush_color: str = "A"
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self._brush_shape: str = "A"
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self._mouse_held: bool = False
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self._last_mouse_drag: Optional[Tuple[int, int]] = None
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def setPaintType(self, paint_type: str) -> None:
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Logger.warning(f"TODO: Implement paint-types ({paint_type}).")
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pass
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def setBrushSize(self, brush_size: float) -> None:
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self._brush_size = int(brush_size)
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def setBrushColor(self, brush_color: str) -> None:
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self._brush_color = brush_color
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def setBrushShape(self, brush_shape: str) -> None:
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self._brush_shape = brush_shape
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@staticmethod
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def _get_intersect_ratio_via_pt(a: numpy.ndarray, pt: numpy.ndarray, b: numpy.ndarray, c: numpy.ndarray) -> float:
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# compute the intersection of (param) A - pt with (param) B - (param) C
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# compute unit vectors of directions of lines A and B
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udir_a = a - pt
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udir_a /= numpy.linalg.norm(udir_a)
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udir_b = b - c
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udir_b /= numpy.linalg.norm(udir_b)
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# find unit direction vector for line C, which is perpendicular to lines A and B
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udir_res = numpy.cross(udir_b, udir_a)
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udir_res /= numpy.linalg.norm(udir_res)
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# solve system of equations
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rhs = b - a
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lhs = numpy.array([udir_a, -udir_b, udir_res]).T
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solved = numpy.linalg.solve(lhs, rhs)
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# get the ratio
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intersect = ((a + solved[0] * udir_a) + (b + solved[1] * udir_b)) * 0.5
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return numpy.linalg.norm(pt - intersect) / numpy.linalg.norm(a - intersect)
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def _nodeTransformChanged(self, *args) -> None:
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self._cache_dirty = True
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def _getBrushPixels(self, mid_x: float, mid_y: float, w: float, h: float) -> List[Tuple[float, float]]:
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res = []
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include = False
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for y in range(-self._brush_size//2, (self._brush_size + 1)//2):
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for x in range(-self._brush_size//2, (self._brush_size + 1)//2):
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match self._brush_shape:
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case "A":
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include = True
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case "B":
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include = x * x + y * y <= self._brush_size * self._brush_size
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if include:
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xx = mid_x + (x / w)
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yy = mid_y + (y / h)
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if xx < 0 or xx > 1 or yy < 0 or yy > 1:
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continue
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res.append((xx, yy))
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return res
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def _handleMouseAction(self, node: SceneNode, paintview: View, x: int, y: int) -> bool:
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face_id = self._selection_pass.getFaceIdAtPosition(x, y)
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if face_id < 0:
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return False
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pt = self._picking_pass.getPickedPosition(x, y).getData()
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va, vb, vc = self._mesh_transformed_cache.getFaceNodes(face_id)
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ta, tb, tc = node.getMeshData().getFaceUvCoords(face_id)
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# 'Weight' of each vertex that would produce point pt, so we can generate the texture coordinates from the uv ones of the vertices.
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# See (also) https://mathworld.wolfram.com/BarycentricCoordinates.html
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wa = PaintTool._get_intersect_ratio_via_pt(va, pt, vb, vc)
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wb = PaintTool._get_intersect_ratio_via_pt(vb, pt, vc, va)
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wc = PaintTool._get_intersect_ratio_via_pt(vc, pt, va, vb)
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wt = wa + wb + wc
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wa /= wt
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wb /= wt
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wc /= wt
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texcoords = wa * ta + wb * tb + wc * tc
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color = self._color_str_to_rgba[self._brush_color]
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w, h = paintview.getUvTexDimensions()
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for (x, y) in self._getBrushPixels(texcoords[0], texcoords[1], float(w), float(h)):
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paintview.setUvPixel(x, y, color)
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return True
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def event(self, event: Event) -> bool:
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"""Handle mouse and keyboard events.
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:param event: The event to handle.
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:return: Whether this event has been caught by this tool (True) or should
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be passed on (False).
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"""
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super().event(event)
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controller = Application.getInstance().getController()
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# Make sure the displayed values are updated if the bounding box of the selected mesh(es) changes
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if event.type == Event.ToolActivateEvent:
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controller.setActiveStage("PrepareStage")
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controller.setActiveView("PaintTool") # Because that's the plugin-name, and the view is registered to it.
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return True
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if event.type == Event.ToolDeactivateEvent:
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controller.setActiveStage("PrepareStage")
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controller.setActiveView("SolidView")
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return True
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if event.type == Event.KeyPressEvent and cast(KeyEvent, event).key == KeyEvent.ShiftKey:
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return False
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if event.type == Event.MouseReleaseEvent and self._controller.getToolsEnabled():
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if MouseEvent.LeftButton not in cast(MouseEvent, event).buttons:
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return False
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self._mouse_held = False
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self._last_mouse_drag = None
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return True
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is_moved = event.type == Event.MouseMoveEvent
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is_pressed = event.type == Event.MousePressEvent
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if (is_moved or is_pressed) and self._controller.getToolsEnabled():
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if is_moved and not self._mouse_held:
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return False
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evt = cast(MouseEvent, event)
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if is_pressed:
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if MouseEvent.LeftButton not in evt.buttons:
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return False
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else:
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self._mouse_held = True
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drags = ([self._last_mouse_drag] if self._last_mouse_drag else []) + [(evt.x, evt.y)]
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self._last_mouse_drag = (evt.x, evt.y)
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paintview = controller.getActiveView()
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if paintview is None or paintview.getPluginId() != "PaintTool":
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return False
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if not self._selection_pass:
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return False
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camera = self._controller.getScene().getActiveCamera()
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if not camera:
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return False
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node = Selection.getAllSelectedObjects()[0]
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if node is None:
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return False
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if node != self._node_cache:
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if self._node_cache is not None:
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self._node_cache.transformationChanged.disconnect(self._nodeTransformChanged)
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self._node_cache = node
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self._node_cache.transformationChanged.connect(self._nodeTransformChanged)
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if self._cache_dirty:
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self._cache_dirty = False
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self._mesh_transformed_cache = self._node_cache.getMeshDataTransformed()
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if not self._mesh_transformed_cache:
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return False
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evt = cast(MouseEvent, event)
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drags.append((evt.x, evt.y))
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if not self._picking_pass:
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self._picking_pass = PickingPass(camera.getViewportWidth(), camera.getViewportHeight())
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self._picking_pass.render()
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self._selection_pass.renderFacesMode()
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res = False
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for (x, y) in drags:
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res |= self._handleMouseAction(node, paintview, x, y)
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if res:
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Application.getInstance().getController().getScene().sceneChanged.emit(node)
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return res
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return False
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