public void paint(Graphics gg) {
int faceSize = Math.min(getWidth() - 4, getHeight() - 4);
if (face == null)
face =
new PADFaceMapped(
Math.max(2, (getWidth() - faceSize) / 2),
Math.max(2, (getHeight() - faceSize) / 2),
faceSize);
if (buffer == null) {
im = this.createImage(getWidth(), getHeight());
buffer = im.getGraphics();
}
super.paint(buffer);
buffer.setColor(new Color(255, 255, 255, 0));
buffer.fillRect(0, 0, im.getWidth(null), im.getHeight(null));
face.setDimensions(
Math.max(2, (getWidth() - faceSize) / 2),
Math.max(2, (getHeight() - faceSize) / 2),
faceSize);
face.paint(buffer);
// draw buffer to screen
gg.drawImage(im, 0, 0, null, null);
}
public void setXY(double x, double y) {
// not validated
// x and y between -1 and 1
double sigmoidSteepness, sigmoidZero, baseLength;
double sensitivity =
1.1; // evaluated with set to 1.1: a sensitivity of 1 means the complete space of the button
// is used. 2 means only the middle part is used, making it more sensitive and more
// easy to get to extreme arousal (from a CHI perspective).
if (!down) {
p = x * sensitivity;
d = y * sensitivity;
baseLength = Math.max(Math.abs(p), Math.abs(d)); // MAX (P, D) base
// baseLength=Math.sqrt(Math.pow(p,2)+Math.pow(d,2))/Math.sqrt(2.0); //euclid P,D base
// now do the mapping to arousal.
// Arousal is controlled simple by using a Sigmoid function based on length of PD vector
sigmoidSteepness = 11;
sigmoidZero = 8;
a = 2 / (1 + Math.exp(-(sigmoidSteepness * baseLength - sigmoidZero))) - 1;
a_base = a;
// Arousal is controlled simply by using a quadratic function that has 0,0,0 as middle point,
// then drops to -1, then to 1 based MIN (P,D) length (mimics better original linear)
// sigmoidSteepness=6;
// sigmoidZero=0.35;
// a=sigmoidSteepness*Math.pow(Math.max(Math.abs(p),Math.abs(d))-sigmoidZero, 2)-1;
p = (p > 1 ? 1 : (p < -1 ? -1 : p));
d = (d > 1 ? 1 : (d < -1 ? -1 : d));
a = (a > 1 ? 1 : (a < -1 ? -1 : a));
} else {
double tmp_p, tmp_d;
tmp_p = x * sensitivity;
tmp_d = y * sensitivity;
baseLength = Math.max(Math.abs(tmp_p), Math.abs(tmp_d)); // MAX (P, D) base
// baseLength=Math.sqrt(Math.pow(p,2)+Math.pow(d,2))/Math.sqrt(2.0); //euclid P,D base
// now do the mapping to arousal.
// Arousal is controlled simple by using a Sigmoid function based on length of PD vector
sigmoidSteepness = 11;
sigmoidZero = 8;
// a=a_base-(d-tmp_d)+2/(1+Math.exp(-(sigmoidSteepness*baseLength-sigmoidZero)))-1;
a = tmp_d;
// Arousal is controlled simply by using a quadratic function that has 0,0,0 as middle point,
// then drops to -1, then to 1 based MIN (P,D) length (mimics better original linear)
// sigmoidSteepness=6;
// sigmoidZero=0.35;
// a=sigmoidSteepness*Math.pow(Math.max(Math.abs(p),Math.abs(d))-sigmoidZero, 2)-1;
// p=(p>1?1:(p<-1?-1:p));
// d=(d>1?1:(d<-1?-1:d));
a = (a > 1 ? 1 : (a < -1 ? -1 : a));
}
}