Newbie, assign functions to class buttons?

tammytammy

Newbie, assign functions to class buttons?

in Contributed Library Questions • 1 year ago

Hi, I´m fairly new to processing and programming in general.

I had help putting it together so far using onlinesources, but now Im kinda stuck, so I have this sketch with a 3d object, OBJ file and i have a class with buttons where I want to be able to with one of the buttons change color of the 3d object.

I can get the button in place but I can´t really figure out how to make it work with the obj file. I also wonder how it´s possible to add another button (button2) from the same class, and make it say, have a zoom option. Plus how to get the colorsquare to show up in the upper left corner. Im quite lost at the moment so all help is appriciated. The code is inserted below (I tried another way to randomize the color but that is now inside comments):

import guicomponents.*;

import saito.objloader.*;

Car c;

GButton Button1;
/*GButton Button2;
GButton Button3;
GButton Button4;
GButton Button5;
*/
float rotX, rotY;
/*float r;
float g;
float b;

float locX;
float locY;
*/
void setup() {
size(768, 576, P3D);
Button button = new Button(this, "color.png");
//Creates car.
c = new Car(this, "car.model");

/*r=random(255);
g=random(255);
b=random(255);*/

}
void handleButtonEvents(GButton button) { //when user press a button
if (button == Button1) {
       // change color of the car by pressing the button

    }
}
void draw()
{

//drawing
directionalLight(255, 255, 255, 0, 0, -1);
background(180);
//fill(80,100,110);
pushMatrix();
translate(width/2, height/2, 0);
rotateX(rotY);
rotateY(rotX);

//Place random colorRect in upper left corner to show current color (wont show up at the moment)
/*locX=random(0);
locY=random(0);

   fill(r, g, b);*/
//rect(locX, locY, 20, 20);

// Draw the car
c.draw();
popMatrix();
// Draw
drawAxis();
}

void drawAxis()
{

noStroke();
}

void mouseDragged()
{
rotX += (mouseX - pmouseX) * 0.01;
rotY -= (mouseY - pmouseY) * 0.01;
}
/*void keyPressed() {
if (mousePressed) {
    r=random(255);
    g=random(255);
    b=random(255);
}
}
*/
class Button
{

Button(PApplet pa, String button1)
{
GButton colorButton1 = new GButton(pa, button1, 0, 50, 526, 106, 50);
//GButton colorButton2 = new GButton(pa, button2, 0, 526, 106, 50);
//GButton colorButton3 = new GButton(pa, button3, 0, 526, 106, 50);
//GButton colorButton4 = new GButton(pa, button4, 0, 526, 106, 50);
//GButton colorButton5 = new GButton(pa, button5, 0, 526, 106, 50);

}
}
class Car
{
//3D mesh

Object body;

Car(PApplet _applet, String model_name)
{

    // Load object
    body = new Object(_applet, "body.obj");
}
void draw()
{
    body.model.draw();
}
}
import saito.objloader.*;

// wrap the OBJModel_Object
class Object
{
OBJModel model;

Object(PApplet _applet, String model_name)
{
    model = new OBJModel(_applet, model_name, "absolute", QUADS);
    model.disableDebug();
    model.disableMaterial();
    model.translateToCenter();
    model.scale(40);
}
}

Replies(3)

Chrisir

Re: Newbie, assign functions to class buttons?

1 year ago

I can't run your code since I don't have the lib guicomponents

But you can have more buttons.

In fact there once were more buttons:

GButton Button1;
/*GButton Button2;
GButton Button3;
GButton Button4;
GButton Button5;
*/

they are commented out.

You can activate them and proceed as with your current button. They should all be with small letters, so

GButton button1;

etc.

Meaning in setup() replicate

Button button = new Button(this, "color.png");

in fact that line could be terrible wrong......
try

Button1=new Button(this, "color.png");

instead.

SInce you don't want to have the button locally but global.
And you declared Button1 already globally.

Maybe you must invoke handleButtonEvents in draw()

Then inside handleButtonEvents, where it says

{
// change color of the car by pressing the button
}

add

{
// change color of the car by pressing the button
println("Hurray");
}

to check whether that button works.

Then replicate that too, saying

if (button == Button1) {
// change color of the car by pressing the button
println("Hurray 1 ");
}
if (button == Button2) {
// action 2
println("Hurray 2 ");
}
if (button == Button3) {
// action 3
println("Hurray 3 ");
}

Greetings!

quarks

Re: Newbie, assign functions to class buttons?

1 year ago

Why are you creating GButtons in another class called Button as it will only confuse things?

Declare the buttons globally as suggested by Chrisir then create all the GButtons in setup() e.g.

GButton colorButton1, colorButton2, colorButton3, colorButton4, colorButton5;
int carColor; // use later to hold a random car color;
void setup() {
size(768, 576, P3D);
GButton colorButton1 = new GButton(pa, "button 1 text", 0, 50, 526, 106, 50);
GButton colorButton2 = new GButton(pa, "button 2 text", 0, 526, 106, 50);
GButton colorButton3 = new GButton(pa, "button 3 text", 0, 526, 106, 50);
GButton colorButton4 = new GButton(pa, "button 4 text", 0, 526, 106, 50);
GButton colorButton5 = new GButton(pa, "button 5 text", 0, 526, 106, 50);
//Create car.
c = new Car(this, "car.model");
}

Don't forget to change the positions of buttons 2-5

Then in the event handler decide what should be done for each button

void handleButtonEvents(GButton button) { //when user press a button
if (button == colorButton1 ) {
changeCarColor();
}
if (button == colorButton2 ) {
// call a method to do something
}
if (button == colorButton3 ) {
// call a method to do something
}
// repeat for buttons 4 & 5
}
void changeCarColor() {
// get a random color
carColor = color(random(255), random(255), random(255));
// Now use this color to change the car color ...
}
// Other methods for each button

If you do this then you do not need the class Button.

tammytammy

Re: Newbie, assign functions to class buttons?

1 year ago

Thanks guys! :)
I know it kinda confused things the way I coded it and I got lost. Feels like Im getting back on track again with your help.

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