Shape3D and picking problem

esnhoesnho

in Contributed Library Questions • 5 months ago

Hi, I'm new to the forum and quite new to Processing.

I'm doing this 3D colored points map, I'm implementing this for a school project, the code is'nt the goal for this project so, I'm not cheating.

I'd like to print on screen a text relative to the hovered point, I've looked to the picking example in Shape3D and implemented it in my sketch. Here is the problem, it is very approsimative, it almost doesn't work...

Thank you for your support.

here is the code:

import shapes3d.utils.*;
import shapes3d.animation.*;
import shapes3d.*;

int resolution = 200;
luogo[] luoghi = new luogo[50];
boolean clicked = false;
Shape3D picked = null;
PVector pickedPos = new PVector();

void setup() {
size(640, 320, P3D);
colorMode(HSB, resolution);
sphereDetail(8);
textFont(createFont("Georgia", 24));
smooth();
ortho();

for (int i = 0; i < luoghi.length; i++) {
      // set up for the points
      luoghi[i] = new luogo(this, 20, 1);
      luoghi[i].setLuogo((int)random(resolution),(int)random(resolution),(int)random(resolution),"ciccia"+i);
}
}

void draw() {

background(0,0,0);

translate((int)width/2,(int)height/2);

// check if the mouse is over a point
picked = Shape3D.pickShape(this, mouseX-width/2, mouseY-height/2);
if (picked != null) {
    println("found : "+mouseX+" "+mouseY);
    pickedPos = picked.getPosVec();
}

// draw the points
for (int i = 0; i < luoghi.length; i++) {
    luoghi[i].disegna(resolution,pickedPos);
}
}

void mouseClicked() {
clicked = true;
}

// this class extends the Helix class in Shape3D library
class luogo extends Helix { // mi appoggio alla funzione Helix della libreria Shape3D
int h,s,b,mX,mY;
String nome; // connected text
boolean drawTXT = false;

luogo (PApplet app, int a, int b) {
    super(app, a, b);
    this.setRadius(5,5,1);
    this.setHelix(1f, 0);
    this.drawMode(S3D.BOTH_CAP | S3D.WIRE);
    this.tag = "Box " + random(5);
}

void setLuogo (int hh, int ss, int bb, String nom) {
    h=hh;
    s=ss;
    b=bb;
    nome=nom;
}

void disegna(int res, PVector pick) {
      // color the point and positionate it as hsb rapresentation
      this.fill(color(h,s,b),S3D.S_CAP | S3D.E_CAP);
      this.stroke(color(0,0,100));
      float x = sin((float)((TWO_PI/res)*h)+(float)frameCount/360)*s;
      float y = map(b,0,res,-res/2,res/2);
      float z = cos((float)((TWO_PI/res)*h)+(float)frameCount/360)*s;

      // if the mouse is over this point print the text
      if (pickedPos.dist(this.getPosVec())==0f) {
        pushMatrix();
          rotateX((float)30/360*TWO_PI);
          translate(-200,-85);
          text(nome, 0, 0, 0);
        popMatrix();
      }

      // drawing
      this.moveTo(x,y,z);
      this.rotateToX((float)30/360*TWO_PI);
      this.draw();
}

void drawText() {
    drawTXT = !drawTXT;
}

int getH() {
    return h;
}
int getS() {
    return s;
}
int getB() {
    return b;
}
int getName() {
    return nome;
}
}

Replies(3)

esnhoesnho

Re: Shape3D and picking problem

5 months ago

I've abadoned this approach and started to use the fabolous functions:
screenX() screenY()

Chrisir

Re: Shape3D and picking problem

5 months ago

could you show your result?

Thanks!

Chrisir

esnhoesnho

Re: Re: Shape3D and picking problem

5 months ago

Here it is.
Now I get this error in javascript, but in Java it works:

TypeError: modelView.rotateX is not a function
modelView.rotateX(angleInRadians);

It came out from the blue... I don't know why

Here is the code, isn't commente well, is the sketch where I'm working, I put an ALLCAPS comment where is the position checking.

int resolution = 200;
luogo[] luoghi = new luogo[50];
testo txt = new testo();

void setup() {
textFont(createFont("Helvetica, Verdana", 10));
size(640, 320, P3D);
colorMode(HSB, resolution);
//smooth();

for (int i = 0; i < luoghi.length; i++) {
      luoghi[i] = new luogo((int)random(resolution),(int)random(resolution),(int)random(resolution),"ciccia"+i);
}
}

void draw() {

background(0,0,0);
translate(width/2,height/2);
rotateX((float)320/360*TWO_PI);
for (int i = 0; i < luoghi.length; i++) {
    luoghi[i].draw(resolution);
}

rotateX((float)40/360*TWO_PI);
txt.draw();
}

void mouseMoved() {
for (int i = 0; i < luoghi.length; i++) {
    luoghi[i].mouseMoved();
}
}

class luogo {
int h,s,b,mX,mY;
String nome;
boolean drawTXT = false;

luogo (int hh, int ss, int bb, String nom) {
    h=hh;
    s=ss;
    b=bb;
    nome=nom;
}

void draw(int res) {
    pushMatrix();
      strokeWeight(0.5);
      fill(h,s,b);
      stroke(0,0,100);
      float x = sin((float)((TWO_PI/res)*h)+(float)frameCount/360)*s;
      float z = cos((float)((TWO_PI/res)*h)+(float)frameCount/360)*s;
      float y = map(b,0,res,-res/2,res/2);
      float rX = screenX(x, y, z);
      float rY = screenY(x, y, z);

      // THIS IS THE CHECK FOR POSITION AND MOUSE
      if ((mouseX)<rX+5 && (mouseX)>rX-5 && (mouseY)<rY+5 && (mouseY)>rY-5) {
        drawText();
        println("mouse: "+(mouseX)+" "+(mouseY)+" | punto: "+rX+" "+rY+" "+screenZ(x, y, z));
      }
      translate(x,y,z);
      //sphere(10);
      pushMatrix();
        rotateX((float)30/360*TWO_PI);
        ellipse(0, 0, 10, 10);
        if (drawTXT) {
          txt.add(nome,screenZ(x, y, z));
          drawTXT = false;
        }
      popMatrix();
    popMatrix();
}

void mouseMoved() {
    mX=mouseX;
    mY=mouseY;
}

void drawText() {
    drawTXT = true;
}

int getH() {
    return h;
}
int getS() {
    return s;
}
int getB() {
    return b;
}
int getName() {
    return h;
}
}

class testo {
ArrayList<String> txt = new ArrayList();
ArrayList<Float> Zpos = new ArrayList();
String t;
float z;

testo() {
}

void add(String t, float z) {
    txt.add(t);
    Zpos.add(z);
}

void draw() {
    if (txt.size()>0) {
      t = txt.get(0);
      z = Zpos.get(0);
      for (int i = 1; i < txt.size(); i++) {
        if (Zpos.get(i) < z) {
          t = txt.get(i);
          z = Zpos.get(i);
        }
      }
      fill(0,0,200);
      text(t, -230, -100, 50);
      txt = new ArrayList();
      Zpos = new ArrayList();
    }
}
}

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