Help to acced the Vertex of a Body using the Fisica library!

matiana

Hey, I'm using the Fisica library in one sketch, I have create a FBlob and I need to acced the vertex of this FBlob. In the documentation there is a function getVertexBodies(), It is a java.util.ArrayList ArrayList, but when I call size() it is allways 0. There is also the float getVertexSize() and this return always 8.0 regardless of how many vertex the FBlob had. I supose, that I don't know how to implement it well :( Has anyone implemented it yet? I appreciate all help Mariana

kfrajer

Can you post a sample code? You can always have a look at the source code to see what other methods are available, if any.

Kf

matiana

Hey, I did a simple sample code, and the funktion works here! it should be something wrong in the "big" code... Any way, I try to grabb the mouse with .setGrabbable(true); to know if it is on (or inside) a FBody, but it don't works :( Here is the code: /** * FBlobs, Vertex, FBlob.getVertexBodies().size() * * 1° clik the mouse +3 times to create a second FBlob * 2° press SPACE to add new FBlob to world * Now you will see the second FBlob * 3° clik on a vertex or outside to test FBlob.getVertexBodies().size() */

import fisica.*;
import java.util.*;

FWorld world;
FBlob blob1, blob2;
boolean habemusBlob = false;
int vertexCount = 0;

void setup() {
  size(400, 400);

  Fisica.init(this);

  world = new FWorld();
  world.setGravity(0, 50);
  world.setEdges();
  world.setEdgesRestitution(0.5);
  //world.setGrabbable(true);

  blob1 = new FBlob();  
  blob1.setStrokeWeight(3);
  blob1.setFill(160, 190, 80);
  blob1.setDensity(10);
  blob1.setRestitution(0.5);
  //blob1.setGrabbable(true);
  // 13 vertex
  blob1.vertex(40, 10);
  blob1.vertex(50, 20);
  blob1.vertex(60, 30);
  blob1.vertex(60, 40);
  blob1.vertex(50, 50);
  blob1.vertex(40, 60);
  blob1.vertex(30, 70);
  blob1.vertex(20, 60);
  blob1.vertex(10, 50);
  blob1.vertex(10, 40);
  blob1.vertex(20, 30);
  blob1.vertex(30, 20);
  blob1.vertex(40, 10);
  world.add(blob1);

  blob2 = new FBlob();
  blob2.setStrokeWeight(3);
  blob2.setFill(86, 160, 86);
  blob2.setDensity(10);
  blob2.setRestitution(0.5);
  //blob2.setGrabbable(true);
}

void draw() {
  background(255);

  world.step();
  world.draw(this);
}


void mousePressed() {
  if (habemusBlob == false) {
    blob2.vertex(mouseX, mouseY);
    vertexCount ++;
  }
}

void mouseReleased() {
  if (habemusBlob == true) {
    println("blob2.getVertexBodies().size():  "+blob2.getVertexBodies().size()+", vertexCount: "+ vertexCount);
    println("blob1.getVertexBodies().size():  "+blob1.getVertexBodies().size()); 

    // if (mouseX, mouseY) is a vertex
    if (world.getBody(mouseX, mouseY) != null) {
      FBody vertex = world.getBody(mouseX, mouseY); // if (mouseX, mouseY) is a vertex 
      println("bodyVertex "+ vertex.getX()+",  "+ vertex.getY());
      blob2.setFill(0, 255, 0);
      //println("blob2.getVertexBodies().size():  "+blob2.getVertexBodies().size()+", vertexCount: "+ vertexCount);
      //println("blob1.getVertexBodies().size():  "+blob1.getVertexBodies().size()); 
    }
    else {
      println("no vertex here");
    }
  }
}

void keyPressed() {
  if (key == ' ') {
    if (habemusBlob == false) {
      if (blob2 != null) {
        world.add(blob2);
        habemusBlob = true;
      }
    }
  }
}