I am developing a project wherea user basically needs to draw patterns (via mouse) and these are converted into sounds. The patterns are like basic shapes of squares, circles, traingles etc.

I have been researching pattern/gesture reconition and think it may be slightly out of my league so I am wondering if anyone can think of anyways on how I could fake it? or find another way to do this.

I would be really grateful for any help.

I was thinking along the same lines but not too sure what sound library to use. Any ideas? I basically just want to call in a note and then manipulate it's tempo, pitch and according to the points.

I was thinking of using jmetude as by the looks of the library I will be able to manipulate notes of sound better. Does anyone have any experience with this library?

angle=atan2(yDifferenceStartEnd,xDifferenceStartEnd);

Where x/yDifferenceStartEnd is the difference in x and y values form the start to the end of the line or line section.

http://processing.org/learning/examples/storinginput.html

Code:

int num = 60;
float mx[] = new float[num];
float my[] = new float[num];

void setup() 
{
  size(200, 200);
  smooth();
  noStroke();
  fill(255, 153); 
}

void draw() 
{
  background(51); 
  
  // Reads throught the entire array
  // and shifts the values to the left
  for(int i=1; i<num; i++) {
    mx[i-1] = mx[i];
    my[i-1] = my[i];
  } 
  // Add the new values to the end of the array
  mx[num-1] = mouseX;
  my[num-1] = mouseY;
  
  for(int i=0; i<num; i++) {

    // Put changes to colour just before drawing the circle

    fill (random(255), random(255), random(255));

    // Try basing it on the number of the circle by uncommenting this next line

    // fill((random(100, 255) / num) * i, (random(100, 255) / num) * i, (random(100, 255) / num) * i, (255 / num) * i);

    ellipse(mx[i], my[i], i/2, i/2);
  }
}
 

angle=atan2(yDifferenceStartEnd,xDifferenceStartEnd);

Where x/yDifferenceStartEnd is the difference in x and y values form the start to the end of the line or line section.

sorry but I haven't done math for ages...If you draw a square without releasing the mouse how does this tells you that it's a square ?

E

do you have some example code ?

E