TexViewer

direct/src/showutil/TexViewer.py

@@ -0,0 +1,81 @@
+from pandac.PandaModules import *
+from direct.showbase.DirectObject import DirectObject
+
+class TexViewer(DirectObject):
+    """ A simple class to pop up a card onscreen to see the contents
+    of a texture. """
+
+    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())
+
+            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)
+
+    def cleanup(self):
+        if not self.cleanedUp:
+            self.root.removeNode()
+            self.cleanedUp = True
+            self.tex = None
+            self.t2 = None