Merge branch 'master' of https://github.com/Ultimaker/PluggableCura

BuildVolume.py

@@ -28,7 +28,7 @@ class BuildVolume(SceneNode):
         self._disallowed_areas = []
         self._disallowed_area_mesh = None
 
-        self._calculate_aabb = False
+        self.setCalculateBoundingBox(False)
 
     def setWidth(self, width):
         self._width = width

ConvexHullJob.py

@@ -0,0 +1,32 @@
+from UM.Job import Job
+from UM.Application import Application
+from UM.Math.Polygon import Polygon
+
+import numpy
+
+from ConvexHullNode import ConvexHullNode
+
+class ConvexHullJob(Job):
+    def __init__(self, node):
+        super().__init__()
+
+        self._node = node
+
+    def run(self):
+        if not self._node or not self._node.getMeshData():
+            return
+
+        mesh = self._node.getMeshData()
+        vertexData = mesh.getTransformed(self._node.getWorldTransformation()).getVertices()
+
+        hull = Polygon(numpy.rint(vertexData[:, [0, 2]]).astype(int))
+
+        # First, calculate the normal convex hull around the points
+        hull = hull.getConvexHull()
+        # Then, do a Minkowski hull with a simple 1x1 quad to outset and round the normal convex hull.
+        hull = hull.getMinkowskiHull(Polygon(numpy.array([[-1, -1], [-1, 1], [1, 1], [1, -1]], numpy.float32)))
+
+        hull_node = ConvexHullNode(self._node, hull, Application.getInstance().getController().getScene().getRoot())
+
+        self._node._convex_hull = hull
+        delattr(self._node, "_convex_hull_job")

ConvexHullNode.py

@@ -0,0 +1,72 @@
+from UM.Scene.SceneNode import SceneNode
+from UM.Resources import Resources
+from UM.Math.Color import Color
+from UM.Math.Vector import Vector
+from UM.Mesh.MeshData import MeshData
+
+import numpy
+
+class ConvexHullNode(SceneNode):
+    def __init__(self, node, hull, parent = None):
+        super().__init__(parent)
+
+        self.setCalculateBoundingBox(False)
+
+        self._material = None
+
+        self._original_parent = parent
+
+        self._inherit_orientation = False
+        self._inherit_scale = False
+
+        self._node = node
+        self._node.transformationChanged.connect(self._onNodePositionChanged)
+        self._node.parentChanged.connect(self._onNodeParentChanged)
+        #self._onNodePositionChanged(self._node)
+
+        self._hull = hull
+
+        hull_points = self._hull.getPoints()
+        center = (hull_points.min(0) + hull_points.max(0)) / 2.0
+
+        mesh = MeshData()
+        mesh.addVertex(center[0], 0.1, center[1])
+
+        for point in hull_points:
+            mesh.addVertex(point[0], 0.1, point[1])
+
+        indices = []
+        for i in range(len(hull_points) - 1):
+            indices.append([0, i + 1, i + 2])
+
+        indices.append([0, mesh.getVertexCount() - 1, 1])
+
+        mesh.addIndices(numpy.array(indices, numpy.int32))
+
+        self.setMeshData(mesh)
+
+    def render(self, renderer):
+        if not self._material:
+            self._material = renderer.createMaterial(Resources.getPath(Resources.ShadersLocation, 'basic.vert'), Resources.getPath(Resources.ShadersLocation, 'color.frag'))
+
+            self._material.setUniformValue('u_color', Color(35, 35, 35, 128))
+
+        renderer.queueNode(self, material = self._material, transparent = True)
+
+        return True
+
+    def _onNodePositionChanged(self, node):
+        #self.setPosition(node.getWorldPosition())
+        if hasattr(node, "_convex_hull"):
+            delattr(node, "_convex_hull")
+            self.setParent(None)
+
+
+        #self._node.transformationChanged.disconnect(self._onNodePositionChanged)
+        #self._node.parentChanged.disconnect(self._onNodeParentChanged)
+
+    def _onNodeParentChanged(self, node):
+        if node.getParent():
+            self.setParent(self._original_parent)
+        else:
+            self.setParent(None)

PlatformPhysics.py

@@ -9,6 +9,7 @@ from UM.Math.AxisAlignedBox import AxisAlignedBox
 from UM.Application import Application
 
 from PlatformPhysicsOperation import PlatformPhysicsOperation
+from ConvexHullJob import ConvexHullJob
 
 import time
 import threading
@@ -19,7 +20,6 @@ class PlatformPhysics:
         self._controller = controller
         self._controller.getScene().sceneChanged.connect(self._onSceneChanged)
         self._build_volume = volume
-        self._signal_source = None
 
         self._change_timer = QTimer()
         self._change_timer.setInterval(100)
@@ -39,13 +39,47 @@ class PlatformPhysics:
             if not bbox or not bbox.isValid():
                 continue
 
+            # Mark the node as outside the build volume if the bounding box test fails.
             if self._build_volume.getBoundingBox().intersectsBox(bbox) != AxisAlignedBox.IntersectionResult.FullIntersection:
                 node._outside_buildarea = True
             else:
                 node._outside_buildarea = False
 
+            # Move the node upwards if the bottom is below the build platform.
+            move_vector = Vector()
             if not Float.fuzzyCompare(bbox.bottom, 0.0):
-                self._signal_source = node
-                op = PlatformPhysicsOperation(node, Vector(0, -bbox.bottom, 0))
-                Application.getInstance().getOperationStack().push(op)
-                self._signal_source = None
+                move_vector.setY(-bbox.bottom)
+
+            # If there is no convex hull for the node, start calculating it and continue.
+            if not hasattr(node, '_convex_hull'):
+                if not hasattr(node, '_convex_hull_job'):
+                    job = ConvexHullJob(node)
+                    job.start()
+                    node._convex_hull_job = job
+            else:
+                # Check for collisions between convex hulls
+                for other_node in BreadthFirstIterator(root):
+                    # Ignore root, ourselves and anything that is not a normal SceneNode.
+                    if other_node is root or type(other_node) is not SceneNode or other_node is node:
+                        continue
+
+                    # Ignore nodes that do not have the right properties set.
+                    if not hasattr(other_node, '_convex_hull') or not other_node.getBoundingBox():
+                        continue
+
+                    # Check to see if the bounding boxes intersect. If not, we can ignore the node as there is no way the hull intersects.
+                    if node.getBoundingBox().intersectsBox(other_node.getBoundingBox()) == AxisAlignedBox.IntersectionResult.NoIntersection:
+                        continue
+
+                    # Get the overlap distance for both convex hulls. If this returns None, there is no intersection.
+                    overlap = node._convex_hull.intersectsPolygon(other_node._convex_hull)
+                    if overlap is None:
+                        continue
+
+                    print(overlap)
+                    move_vector.setX(-overlap[0])
+                    move_vector.setZ(-overlap[1])
+
+            if move_vector != Vector():
+                op = PlatformPhysicsOperation(node, move_vector)
+                op.push()