moving image mouse pressed

Programming Questions

lakotnik13

in Programming Questions • 9 months ago

hello
i'm having problem with moving image to different location when you press on it with mouse. The program is working on the whole background but i want that picture would move when only when i click on it and drag it around on background not if i click outside the image. I'm copying methodes that i used.
Hope someone can give me an advise.

public void mousePressed()
    {
    if(overImage){
        locked=true;
    }else{
        locked=false;
    }
    offX=mouseX-mX;
    offY=mouseY-mY;
    }

    public void mouseDragged(){
        if(locked){
            mX=mouseX-offX;
            mY=mouseY-offY;
        }
    }

    public void mouseReleased(){
        locked=false;
    }

Replies(7)

Chrisir

Re: moving image mouse pressed

9 months ago

hello,

could you post the entire sketch?

The function overImage could be wrong.

Instead of using

public void mouseDragged(){
if(locked){
mX=mouseX-offX;
mY=mouseY-offY;
}
}

you could delete mouseDragged()
and have your lines within draw():

if(locked){
mX=mouseX-offX;
mY=mouseY-offY;
}

The advantage is that you can paint a rect while dragging even if you hold the mouse still (with holding the mouse button).

You could also display a rect instead of the image while you drag:

if(locked){
mX=mouseX-offX;
mY=mouseY-offY;
noFill();
stroke(255,2,2);
rect(mx,my,imageWidth1,imageHeight1);
}

You have to set imageWidth1,imageHeight1 to the image size somewhere.

Greetings, Chrisir

lakotnik13

Re: Re: moving image mouse pressed

9 months ago

Thanks for anwser but it stil doesnt work
any other way to do this?

public void setup() {
    size(800,640);
        mX=width/2;
        mY=height/2;
        final JFileChooser fc = new JFileChooser();
        final JFileChooser fc2 = new JFileChooser();

        int returnVal = fc.showOpenDialog(this);
        if (returnVal == JFileChooser.APPROVE_OPTION) {

            File file = fc.getSelectedFile();
            img1 = loadImage(file.getPath());
        }
    }



    public void draw() {
    background(0);
    if (mouseX>mX-(img1.width/8) && mouseX< mX+(img1.width/8)
            && mouseY>mY-(img1.height/8) && mouseY< mY+(img1.height/8)) {
    overImage=true;

    if(locked){
        overImage=false;
    }


    }

    image(img1,mX,mY,img1.width/8,img1.height/8);

    }

    // mousepressed
    public void mousePressed()
    {
    if(overImage){
        locked=true;
    }else{
        locked=false;
    }
    offX=mouseX-mX;
    offY=mouseY-mY;
    }

    public void mouseDragged(){
        if(locked){
                mX=mouseX-offX;
                mY=mouseY-offY;
                noFill();
                stroke(255,2,2);
                rect(mX,mY,img1.width/8,img1.height/8);
            }
    }

    public void mouseReleased(){
        locked=false;
    }
}