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Calculating Speed with sensor
Hello,
Right now I am trying to figure out how to calculate speed with a sensor. I know that speed is the rate of change with respect to time. So change of position / time. I know I need to get the position(pos) of the sensor first. Then i have to have a def: that will check for its new pos then do the calculation - (new pos - old pos) / time. Then after that I need to start over and set the new pos to old pos. The problem im having is trying to establish a pos before the def: starts running. Whenever I test for the old position i keep getting 0.0, 0.0, 0.0. So its going to look something like this: Code:
import viz viz.go() PORT_PPT = 6 for x in range(1): #Create sensors ppt1 = viz.add('vizppt.dls') ppt2 = viz.add('vizppt.dls') ball1 = viz.add('white_vall.wrl') ball1.scale(1,1,1) ballLink1 = viz.link(ppt1, ball1) ball2 = viz.add('white_vall.wrl') ball2.scale(1,1,1) ballLink2 = viz.link(ppt2, ball2) #controls distance in virtual world ballLink1.postScale([8,1,13],target = viz.LINK_FULL_OP) ballLink2.postScale([8,1,13],target = viz.LINK_FULL_OP) #I need to check for ball1 pos before here def speed(): #need to check for new pos for ball1 here #need to somehow get old pos of ball1 so i can do the equation #new pos - old pos /2(=1/2 second) if speed > 1: #some reaction happens in here #need to set old pos = new pos vizact.ontimer(.5, speed) Thanks |
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