Conversion from metric measurements to modifier [0,1]

[cjacobs]

I've been reading through the MakeHuman source but can't find the file where the each modifier slider's value on the interval [0.0, 1.0] is converted to an actual measurement and written to the measurement boxes. I'd like to find the code governing those conversions. Perhaps someone more experienced with the MakeHuman source could point me in the right direction?

Many thanks!

[RobBaer]

MH doesn't really do "real measurement" in the sense you probably want, but perhaps what you are looking for is 0_modeling_a_measurement.py in the plugins folder.

[cjacobs]

@RobBauer Thanks! I've been looking at that file, and I wonder if what I'm looking for is the displayToData function:

Code: Select all


    def displayToData(self, value):
        goal = float(value)
        measure = self.task.getMeasure(self.measure)
        minValue = -1.0
        maxValue = 1.0
        if math.fabs(measure - goal) < 0.01:
            return self.value
        else:
            tries = 10
            while tries:
                if math.fabs(measure - goal) < 0.01:
                    break;
                if goal < measure:
                    maxValue = self.value
                    if value == minValue:
                        break
                    self.value = minValue + (self.value - minValue) / 2.0
                    self.modifier.updateValue(self.value, 0)
                    measure = self.task.getMeasure(self.measure)
                else:
                    minValue = self.value
                    if value == maxValue:
                        break
                    self.value = self.value + (maxValue - self.value) / 2.0
                    self.modifier.updateValue(self.value, 0)
                    measure = self.task.getMeasure(self.measure)
                tries -= 1
        return self.value



But I'm not entirely sure what it's doing. I think what it's doing is taking a goal measurement, and, given the model's current measurements, constructing the slider
value within (-1, 1) required to reach the goal. I think this because it updates the modifiers during the code.

Am I correct?

Thanks again for your help!