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#1
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Getting a mirror to work in any environment
I used the code from this thread (http://www.worldviz.com/forum/showthread.php?t=1303) to create a mirror in the gallery environment. However, when I want to use the mirror in an other environment, it doesn't work anymore. Can somebody explain me why it doesn't work anymore and how I can make it work in any environment (even without an environment)? Or do I have to adjust the mirror for the environment I'm using? If so, how can I do that? Here is my code I'm currently using:
Code:
import viz import socket import math import vizmat import csv import time import random viz.go() def addMirror(mirror,mat=None): #If mirror matrix is not specifed, get matrix of mirror object if mat is None: mat = mirror.getMatrix() #Position of mirror pos = viz.Vector(mat.getPosition()) #Direction mirror is pointing dir = viz.Vector(mat.getForward()) dir.normalize() #Quaternion rotation of mirror quat = mat.getQuat() #Create render texture tex = viz.addRenderTexture() #Create render node for rendering reflection lens = viz.addRenderNode(size=[512,512]) #set to [1024,1024] in the lab! lens.attachTexture(tex) lens.setInheritView(True,viz.POST_MULT) lens.disable(viz.CULL_FACE,op=viz.OP_SET_OVERRIDE) #Setup reflection matrix rot = viz.Matrix.quat(quat) invRot = rot.inverse() lens.setMatrix(viz.Matrix.translate(pos*-1.0)*invRot*viz.Matrix.scale(1,1,-1)*rot*viz.Matrix.translate(pos)) #Setup reflection clip plane plane = vizmat.Plane(pos=pos,normal=dir) dist = plane.distance([0,0,0]) lens.clipPlane([-dir[0],-dir[1],-dir[2],dist+0.001]) #Project reflection texture onto mirror mirror.texture(tex) mirror.texGen(viz.TEXGEN_PROJECT_EYE) #Add gallery environment #gallery = viz.add('gallery.ive') environment = viz.add('tut_ground.wrl') #Create a mirror mirror = viz.addTexQuad() mirror.scale(1.3,3,1) mirror.setPosition([0, 1, 2]) m = viz.Matrix() m.setPosition(mirror.getPosition(viz.ABS_GLOBAL)) m.setEuler(180,0,0) #Apply mirror settings to mirror object addMirror(mirror,m) #Increase ambient lighting viz.MainView.getHeadLight().ambient(3,3,3) #adjust avatar lighting #Create two self avatars, possible: vcc_male.cfg, vcc_female.cfg, male.cfg, male_bbox.cfg, duck.cfg, hand.cfg avatar1 = viz.add('vcc_male.cfg') avatar1.setPosition(0.5,0,0) #(Y,Z,X) avatar2 = viz.add('vcc_female.cfg') avatar2.setPosition(-0.5,0,0) #(Y,Z,X) |
#2
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Can you be more specific about what doesn't work? I ran your script and it worked fine.
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#3
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It seems to be that the computer I was testing on was the problem. When I tested it in the lab, all was fine like you say. I don't know why my testing computer has this issue, but it doesn't matter that much if it works in the lab.
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#4
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I'm still having problems with the mirror. When I don't adjust the ambient lighting like this:
Code:
#Increase ambient lighting viz.MainView.getHeadLight().ambient(3,3,3) |
#5
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By default Vizard has a light source attached to the head position. So when you look in the mirror the head light is not facing the avatar. You should disable the head light and add a fixed light source. For example, the following code will create a directional light that point downward:
Code:
viz.MainView.getHeadLight().disable() sunlight = viz.addLight() sunlight.position(0,1,0,0) sunlight.ambient([0.6]*3) |
#6
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Thanks farshizzo! After trying some things I managed to get the reflection the way I wanted. Putting the light on the position of the mirror seemed to do the trick. Because I have several conditions (where participants view the world through the eyes of the avatar or through a point outside of the body of the avatar) I had to disable the headlight and add a light that pointed on the avatar, which had to be the same as the light on the mirror. Anyway, the problem is solved!
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