I feel like I’m missing something obvious here… I’m brand new to Panda3D, so please do bear with me, and feel free to move this thread if it’s in the wrong forum.
I’m trying to set up a very simple scene, mostly stripped from the tutorial with a few elements changed/added. Using Blender 2.66 and YABEE 13.1, I’ve exported a very simple cube (in fact, it’s the cube that Blender starts up with by default, completely unmodified, no texture) to an .egg file. I then load the model in Panda, apply a texture from a 128x128 bmp file using setTexture(), and run the program. The model appears completely monochrome, white or gray where my single directional light hits it, and pure, featureless black where no light hits it. I’ve been monkeying around for a little while, adding/removing/adjusting lights etc. If there’s no light in the scene, the cube appears pure black. I’m at a little bit of a loss as to what’s causing this, and I’m hoping someone might have a minute to address this noob question.
Here’s my code:
from math import pi, sin, cos
import sys
import direct.directbase.DirectStart
from direct.showbase.ShowBase import ShowBase
from direct.showbase.DirectObject import DirectObject
from direct.task import Task
from direct.actor.Actor import Actor
from direct.interval.IntervalGlobal import Sequence
from panda3d.core import Point3
from panda3d.core import Vec3,Vec4,BitMask32
from panda3d.core import Texture, PointLight, DirectionalLight, VBase4
class MyApp(ShowBase):
def __init__(self):
ShowBase.__init__(self)
self.environ = self.loader.loadModel("environment")
self.environ.reparentTo(self.render)
self.environ.setScale(0.25, 0.25, 0.25)
self.environ.setPos(-8, 42, 0)
self.wall = self.loader.loadModel("cube")
self.wall.reparentTo(self.render)
self.wall.setScale(1, 1, 1)
self.wall.setPos(-10, 10, 30)
wall_tex = loader.loadTexture("wall_128.bmp")
wall_tex.setWrapU(Texture.WMRepeat)
wall_tex.setWrapV(Texture.WMRepeat)
self.wall.setTexture(wall_tex)
dlight = DirectionalLight('dlight')
dlight.setColor(VBase4(1, 1, 1, 1))
dlnp = render.attachNewNode(dlight)
dlnp.setHpr(0, -60, 0)
render.setLight(dlnp)
base.disableMouse()
self.mouse_x = 0
self.mouse_y = 0
self.keyMap = {"speed": 0, "left":0, "right":0, "forward":0, "backward":0, "up":0, "down":0, "cam-left":0, "cam-right":0}
self.accept("a", self.setKey, ["cam-left",1])
self.accept("d", self.setKey, ["cam-right",1])
self.accept("w", self.setKey, ["forward", 1])
self.accept("s", self.setKey, ["backward", 1])
self.accept("space", self.setKey, ["up", 1])
self.accept("c", self.setKey, ["down", 1])
self.accept("shift", self.setKey, ["speed", 1])
self.accept("a-up", self.setKey, ["cam-left",0])
self.accept("d-up", self.setKey, ["cam-right",0])
self.accept("w-up", self.setKey, ["forward", 0])
self.accept("s-up", self.setKey, ["backward", 0])
self.accept("space-up", self.setKey, ["up", 0])
self.accept("c-up", self.setKey, ["down", 0])
self.accept("shift-up", self.setKey, ["speed", 0])
self.accept("escape", sys.exit)
taskMgr.add(self.move,"moveTask")
taskMgr.add(self.mouse_cam, "mouse_cam")
base.camera.setPos(20 , -20.0 , 20)
base.camera.setHpr(0, 0, 0)
def setKey(self, key, value):
self.keyMap[key] = value
def mouse_cam(self, task):
if base.mouseWatcherNode.hasMouse():
x = base.mouseWatcherNode.getMouseX()
y = base.mouseWatcherNode.getMouseY()
angle_x = x * -180
angle_y = y * 180
self.mouse_x += angle_x
self.mouse_y += angle_y
base.camera.setHpr(self.mouse_x, self.mouse_y, 0)
base.win.movePointer(0, 400, 300)
return task.cont
else:
return task.cont
def move(self, task):
speed = 50
if (self.keyMap["speed"] != 0):
speed = 200
if (self.keyMap["cam-left"]!=0):
base.camera.setX(base.camera, -speed * globalClock.getDt())
if (self.keyMap["cam-right"]!=0):
base.camera.setX(base.camera, +speed * globalClock.getDt())
if (self.keyMap["forward"] != 0):
base.camera.setY(base.camera, +speed * globalClock.getDt())
if (self.keyMap["backward"] != 0):
base.camera.setY(base.camera, -speed * globalClock.getDt())
if (self.keyMap["up"] != 0):
base.camera.setZ(base.camera, +speed * globalClock.getDt())
if (self.keyMap["down"] != 0):
base.camera.setZ(base.camera, -speed * globalClock.getDt())
return task.cont
app = MyApp()
app.run()Here’s the .egg file:
<CoordinateSystem> { Z-up }
<Material> Material {
<Scalar> diffr { 0.640000 }
<Scalar> diffg { 0.640000 }
<Scalar> diffb { 0.640000 }
<Scalar> specr { 0.500000 }
<Scalar> specg { 0.500000 }
<Scalar> specb { 0.500000 }
<Scalar> shininess { 12.5 }
<Scalar> emitr { 0.000000 }
<Scalar> emitg { 0.000000 }
<Scalar> emitb { 0.000000 }
}
<Group> Cube {
<Transform> {
<Matrix4> {
1.000000 0.000000 0.000000 0.000000
0.000000 1.000000 0.000000 0.000000
0.000000 0.000000 1.000000 0.000000
0.000000 0.000000 0.000000 1.000000
}
}
<VertexPool> Cube {
<Vertex> 0 {
1.0 0.9999999403953552 -1.0
}
<Vertex> 1 {
1.0 -1.0 -1.0
}
<Vertex> 2 {
-1.0000001192092896 -0.9999998211860657 -1.0
}
<Vertex> 3 {
-0.9999996423721313 1.0000003576278687 -1.0
}
<Vertex> 4 {
1.0000004768371582 0.999999463558197 1.0
}
<Vertex> 5 {
-0.9999999403953552 1.0 1.0
}
<Vertex> 6 {
-1.0000003576278687 -0.9999996423721313 1.0
}
<Vertex> 7 {
0.9999993443489075 -1.0000005960464478 1.0
}
<Vertex> 8 {
1.0 0.9999999403953552 -1.0
}
<Vertex> 9 {
1.0000004768371582 0.999999463558197 1.0
}
<Vertex> 10 {
0.9999993443489075 -1.0000005960464478 1.0
}
<Vertex> 11 {
1.0 -1.0 -1.0
}
<Vertex> 12 {
1.0 -1.0 -1.0
}
<Vertex> 13 {
0.9999993443489075 -1.0000005960464478 1.0
}
<Vertex> 14 {
-1.0000003576278687 -0.9999996423721313 1.0
}
<Vertex> 15 {
-1.0000001192092896 -0.9999998211860657 -1.0
}
<Vertex> 16 {
-1.0000001192092896 -0.9999998211860657 -1.0
}
<Vertex> 17 {
-1.0000003576278687 -0.9999996423721313 1.0
}
<Vertex> 18 {
-0.9999999403953552 1.0 1.0
}
<Vertex> 19 {
-0.9999996423721313 1.0000003576278687 -1.0
}
<Vertex> 20 {
1.0000004768371582 0.999999463558197 1.0
}
<Vertex> 21 {
1.0 0.9999999403953552 -1.0
}
<Vertex> 22 {
-0.9999996423721313 1.0000003576278687 -1.0
}
<Vertex> 23 {
-0.9999999403953552 1.0 1.0
}}
<Polygon> {
<MRef> { Material }
<Normal> {0.000000 0.000000 -1.000000}
<VertexRef> { 0 1 2 3 <Ref> { Cube }}
}
<Polygon> {
<MRef> { Material }
<Normal> {0.000000 0.000000 1.000000}
<VertexRef> { 4 5 6 7 <Ref> { Cube }}
}
<Polygon> {
<MRef> { Material }
<Normal> {1.000000 -0.000000 0.000000}
<VertexRef> { 8 9 10 11 <Ref> { Cube }}
}
<Polygon> {
<MRef> { Material }
<Normal> {-0.000000 -1.000000 -0.000000}
<VertexRef> { 12 13 14 15 <Ref> { Cube }}
}
<Polygon> {
<MRef> { Material }
<Normal> {-1.000000 0.000000 -0.000000}
<VertexRef> { 16 17 18 19 <Ref> { Cube }}
}
<Polygon> {
<MRef> { Material }
<Normal> {0.000000 1.000000 0.000000}
<VertexRef> { 20 21 22 23 <Ref> { Cube }}
}
}And here’s a link to the texture:
dropbox.com/s/l3gte723rml27ad/wall_128.bmp
Any thoughts would be greatly, greatly appreciated!
