from panda3d.core import *
from direct.showbase.DirectObject import DirectObject
[docs]class TexViewer(DirectObject):
""" A simple class to pop up a card onscreen to see the contents
of a texture. """
[docs] def __init__(self, tex):
self.tex = tex
self.cleanedUp = False
self.root = aspect2d.attachNewNode('texViewer')
self.root.setBin('gui-popup', 10000)
cards = self.root.attachNewNode('cards')
# We'll put the full-resolution texture on the left.
cm = CardMaker('left')
l, r, b, t = (-1, -0.1, 0, 0.9)
cm.setFrame(l, r, b, t)
left = cards.attachNewNode(cm.generate())
left.setTexture(self.tex)
left.setTransparency(TransparencyAttrib.MAlpha)
ls = LineSegs('frame')
ls.setColor(0, 0, 0, 1)
ls.moveTo(l, 0, b)
ls.drawTo(r, 0, b)
ls.drawTo(r, 0, t)
ls.drawTo(l, 0, t)
ls.drawTo(l, 0, b)
cards.attachNewNode(ls.create())
# And the "simple", reduced-resolution version goes on the
# right.
if self.tex.hasSimpleRamImage():
self.t2 = Texture('simple')
self.t2.setup2dTexture(self.tex.getSimpleXSize(),
self.tex.getSimpleYSize(),
Texture.TUnsignedByte,
Texture.FRgba8)
self.t2.setRamImage(self.tex.getSimpleRamImage())
self.t2.setMagfilter(Texture.FTNearest)
cm = CardMaker('right')
l, r, b, t = (0.1, 1, 0, 0.9)
cm.setFrame(l, r, b, t)
right = cards.attachNewNode(cm.generate())
right.setTexture(self.t2)
right.setTransparency(TransparencyAttrib.MAlpha)
ls = LineSegs('frame')
ls.setColor(0, 0, 0, 1)
ls.moveTo(l, 0, b)
ls.drawTo(r, 0, b)
ls.drawTo(r, 0, t)
ls.drawTo(l, 0, t)
ls.drawTo(l, 0, b)
cards.attachNewNode(ls.create())
# Scale both sides by the aspect ratio.
if self.tex.getXSize() > self.tex.getYSize():
cards.setScale(1, 1, float(self.tex.getYSize()) / self.tex.getXSize())
else:
cards.setScale(float(self.tex.getXSize()) / self.tex.getYSize(), 1, 1)
# Label the texture.
tn = TextNode('label')
tn.setShadow(0.1, 0.1)
tn.setText(self.tex.getName())
tn.setAlign(tn.ACenter)
tnp = self.root.attachNewNode(tn)
tnp.setScale(0.1)
tnp.setPos(0, 0, -tn.getHeight() * 0.1)
[docs] def cleanup(self):
if not self.cleanedUp:
self.root.removeNode()
self.cleanedUp = True
self.tex = None
self.t2 = None
