def getObjectsUnderMouse(self):
vp = base.viewportMgr.activeViewport
if not vp:
return []
entries = vp.click(self.Mask)
if not entries or len(entries) == 0:
return []
objects = []
key = self.Key
for i in range(len(entries)):
# Our entries have been sorted by distance, so use the first (closest) one.
entry = entries[i]
np = entry.getIntoNodePath().findNetPythonTag(key)
if not np.isEmpty():
# Don't backface cull if there is a billboard effect on or above this node
if entry.hasSurfaceNormal() and not LEUtils.hasNetBillboard(
entry.getIntoNodePath()):
surfNorm = entry.getSurfaceNormal(vp.cam).normalized()
rayDir = entry.getFrom().getDirection().normalized()
if surfNorm.dot(rayDir) >= 0:
# Backface cull
continue
obj = np.getPythonTag(key)
actual = self.getActualObject(obj, entry)
objects.append((actual, entry))
return objects
def mouseDown(self):
vp = base.viewportMgr.activeViewport
if not vp:
return
if vp.is3D():
# If we clicked in the 3D viewport, try to intersect with an existing MapObject
# and immediately place the entity at the intersection point. If we didn't click on any
# MapObject, place the entity on the grid where we clicked.
entries = vp.click(GeomNode.getDefaultCollideMask())
if entries and len(entries) > 0:
for i in range(len(entries)):
entry = entries[i]
# Don't backface cull if there is a billboard effect on or above this node
if not LEUtils.hasNetBillboard(entry.getIntoNodePath()):
surfNorm = entry.getSurfaceNormal(vp.cam).normalized()
rayDir = entry.getFrom().getDirection().normalized()
if surfNorm.dot(rayDir) >= 0:
# Backface cull
continue
# We clicked on an object, use the contact point as the
# location of our new entity.
self.pos = entry.getSurfacePoint(self.doc.render)
self.hasPlaced = True
# Create it!
self.confirm()
break
else:
# Didn't click on an object, intersect our mouse ray with the grid plane.
plane = LPlane(0, 0, 1, 0)
worldMouse = vp.viewportToWorld(vp.getMouse())
theCamera = vp.cam.getPos(render)
# Ensure that the camera and mouse positions are on opposite
# sides of the plane, or else the entity would place behind us.
sign1 = plane.distToPlane(worldMouse) >= 0
sign2 = plane.distToPlane(theCamera) >= 0
if sign1 != sign2:
pointOnPlane = Point3()
ret = plane.intersectsLine(pointOnPlane, theCamera,
worldMouse)
if ret:
# Our mouse intersected the grid plane. Place an entity at the plane intersection point.
self.pos = pointOnPlane
self.hasPlaced = True
self.confirm()
return
# The user clicked in the 2D viewport, draw the visualization where they clicked.
self.showVis()
self.updatePosFromViewport(vp)
self.mouseIsDown = True
self.hasPlaced = True