Triangle Draw Method

Jon Snow picture Jon Snow · Aug 12, 2012 · Viewed 160.4k times · Source

I have trouble drawing a triangle with the draw(Graphics g) method in Java. I can draw a rectangle like so:

public void draw(Graphics g) {
    g.setColor(colorFill);
    g.fillRect(p.x, p.y, width, height);
    g.setColor(colorBorder);
    g.drawRect(p.x, p.y, width, height);
    drawHandles(g);

Where p represents "the top left corner of the shapes". How would I draw the triangle in the same manner?

Could someone give me an example for a standard triangle?

Answer

davidbuzatto picture davidbuzatto · Aug 12, 2012

There is not a drawTriangle method neither in Graphics nor Graphics2D. You need to do it by yourself. You can draw three lines using the drawLine method or use one these methods:

These methods work with polygons. You may change the prefix draw to fill when you want to fill the polygon defined by the point set. I inserted the documentation links. Take a look to learn how to use them.

There is the GeneralPath class too. It can be used with Graphics2D, which is capable to draw Shapes. Take a look: