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Added support for grid snapping

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This commit is contained in:
Gyedo Jeon 2009-10-07 21:40:22 +00:00
parent cd6ec4c28c
commit d1d8685fe5
1 changed files with 44 additions and 2 deletions
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46
direct/src/directtools/DirectManipulation.py
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@ -53,6 +53,9 @@ class DirectManipulationControl(DirectObject):
# [gjeon] for new LE's multi-view support # [gjeon] for new LE's multi-view support
self.fMultiView = 0 self.fMultiView = 0
# [gjeon] to support grid snapping
self.fGridSnap = 0
def scaleWidget(self, factor): def scaleWidget(self, factor):
if hasattr(base.direct, 'widget'): if hasattr(base.direct, 'widget'):
base.direct.widget.multiplyScalingFactorBy(factor) base.direct.widget.multiplyScalingFactorBy(factor)
@ -270,8 +273,6 @@ class DirectManipulationControl(DirectObject):
boundingSphereTest = marqueeFrustum.contains(bbc) boundingSphereTest = marqueeFrustum.contains(bbc)
if boundingSphereTest > 1: if boundingSphereTest > 1:
if boundingSphereTest == 7: if boundingSphereTest == 7:
print "boundingSphere is all in, selecting ", geom
if nodePath not in selectionList: if nodePath not in selectionList:
selectionList.append(nodePath) selectionList.append(nodePath)
else: else:
@ -551,6 +552,39 @@ class DirectManipulationControl(DirectObject):
def removeTag(self, tag): def removeTag(self, tag):
self.unmovableTagList.remove(tag) self.unmovableTagList.remove(tag)
def gridSnapping(self, offset):
offsetX = offset.getX()
offsetY = offset.getY()
offsetZ = offset.getZ()
if math.fabs(offsetX) < base.direct.grid.gridSpacing / 2.0:
offsetX = 0
else:
if offsetX < 0:
offsetX = -1 * base.direct.grid.gridSpacing
else:
offsetX = base.direct.grid.gridSpacing
if math.fabs(offsetY) < base.direct.grid.gridSpacing / 2.0:
offsetY = 0
else:
if offsetY < 0:
offsetY = -1 * base.direct.grid.gridSpacing
else:
offsetY = base.direct.grid.gridSpacing
if math.fabs(offsetZ) < base.direct.grid.gridSpacing / 2.0:
offsetZ = 0
else:
if offsetZ < 0:
offsetZ = -1 * base.direct.grid.gridSpacing
else:
offsetZ = base.direct.grid.gridSpacing
offset.setX(offsetX)
offset.setY(offsetY)
offset.setZ(offsetZ)
return offset
### WIDGET MANIPULATION METHODS ### ### WIDGET MANIPULATION METHODS ###
def xlate1D(self, state): def xlate1D(self, state):
@ -568,6 +602,10 @@ class DirectManipulationControl(DirectObject):
else: else:
# Move widget to keep hit point as close to mouse as possible # Move widget to keep hit point as close to mouse as possible
offset = self.hitPt - self.prevHit offset = self.hitPt - self.prevHit
if self.fGridSnap:
offset = self.gridSnapping(offset)
if hasattr(base.direct, "manipulationControl") and base.direct.manipulationControl.fMultiView: if hasattr(base.direct, "manipulationControl") and base.direct.manipulationControl.fMultiView:
for widget in base.direct.manipulationControl.widgetList: for widget in base.direct.manipulationControl.widgetList:
widget.setPos(widget, offset) widget.setPos(widget, offset)
@ -588,6 +626,10 @@ class DirectManipulationControl(DirectObject):
self.prevHit.assign(self.hitPt) self.prevHit.assign(self.hitPt)
else: else:
offset = self.hitPt - self.prevHit offset = self.hitPt - self.prevHit
if self.fGridSnap:
offset = self.gridSnapping(offset)
if hasattr(base.direct, "manipulationControl") and base.direct.manipulationControl.fMultiView: if hasattr(base.direct, "manipulationControl") and base.direct.manipulationControl.fMultiView:
for widget in base.direct.manipulationControl.widgetList: for widget in base.direct.manipulationControl.widgetList:
widget.setPos(widget, offset) widget.setPos(widget, offset)