from direct.directbase.DirectStart import *
from pandac.PandaModules import *

base.setBackgroundColor(1, 1, 1, 1)

def showTexture(filename, fx, fy):
    tex = loader.loadTexture(filename)
    tex.setMinfilter(Texture.FTLinearMipmapLinear)
    root = NodePath(filename)
    root.reparentTo(aspect2d)

    cm = CardMaker('card')
    cm.setFrame(-fx, fx, -fy, fy)
    card = root.attachNewNode(cm.generate())
    card.setTexture(tex)

    ls = LineSegs('frame')
    ls.setColor(0, 0, 0, 1)
    ls.moveTo(-fx, 0, -fy)
    ls.drawTo(fx, 0, -fy)
    ls.drawTo(fx, 0, fy)
    ls.drawTo(-fx, 0, fy)
    ls.drawTo(-fx, 0, -fy)
    card.attachNewNode(ls.create())

    tn = TextNode('label')
    tn.setTextColor(0.4, 0.5, 1, 1)

    tn.setAlign(TextNode.ARight)
    tn.setText('(0, 0)')
    tnp00 = root.attachNewNode(tn.generate())
    tnp00.setPos(-fx - 0.02, 0, -fy - 0.05)
    tnp00.setScale(0.1)

    tn.setText('(0, 1)')
    tnp01 = root.attachNewNode(tn.generate())
    tnp01.setPos(-fx - 0.02, 0, fy - 0.02)
    tnp01.setScale(0.1)

    tn.setAlign(TextNode.ALeft)
    tn.setText('(1, 0)')
    tnp10 = root.attachNewNode(tn.generate())
    tnp10.setPos(fx, 0, -fy - 0.05)
    tnp10.setScale(0.1)

    tn.setText('(1, 1)')
    tnp11 = root.attachNewNode(tn.generate())
    tnp11.setPos(fx, 0, fy - 0.02)
    tnp11.setScale(0.1)

    tn.setAlign(TextNode.ACenter)
    tn.setSlant(0.2)
    tn.setText('u')
    tnpU = root.attachNewNode(tn.generate())
    tnpU.setPos(-fx + 0.1, 0, -fy - 0.1)
    tnpU.setScale(0.1)

    tn.setText('v')
    tnpV = root.attachNewNode(tn.generate())
    tnpV.setPos(-fx - 0.1, 0, -fy + 0.1)
    tnpV.setScale(0.1)

    ls = LineSegs('arrows')
    ls.setColor(0.4, 0.5, 1, 1)
    ls.moveTo(-fx + 0.17, 0, -fy - 0.08)
    ls.drawTo(fx - 0.1, 0, -fy - 0.08)
    ls.moveTo(fx - 0.17, 0, -fy - 0.05)
    ls.drawTo(fx - 0.1, 0, -fy - 0.08)
    ls.drawTo(fx - 0.17, 0, -fy - 0.11)
    arrowU = root.attachNewNode(ls.create())

    ls = LineSegs('arrows')
    ls.setColor(0.4, 0.5, 1, 1)
    ls.moveTo(-fx - 0.09, 0, -fy + 0.18)
    ls.drawTo(-fx - 0.09, 0, fy - 0.15)
    ls.moveTo(-fx - 0.12, 0, fy - 0.22)
    ls.drawTo(-fx - 0.09, 0, fy - 0.15)
    ls.drawTo(-fx - 0.06, 0, fy - 0.22)
    arrowV = root.attachNewNode(ls.create())

    return root

s = showTexture('maps/smiley.rgb', 1, 0.5)
n = showTexture('maps/noise.rgb', 0.5, 0.5)
b = showTexture('maps/envir-bamboo.png', 0.5, 0.5)

top = aspect2d.attachNewNode('top')
s.reparentTo(top)
s.setPos(0, 0, 0.7)
n.reparentTo(top)
n.setPos(-0.9, 0, -0.7)
b.reparentTo(top)
b.setPos(0.9, 0, -0.7)
top.setScale(0.7)

base.graphicsEngine.renderFrame()
base.screenshot('texture_uvs.png', defaultFilename = 0)