CODEWITHSUNDEEP
androidcanvasgraphics
Jonas1902
Jonas1902

Reputation: 103

How to achieve filling a path object on a canvas?

I have a problem filling a path drawn on a canvas. I read all those previous questions saying 

Paint red = new Paint();
red.setColor(Color.RED);
red.setStyle(Paint.Style.FILL_AND_STROKE);

should be the way it works. Then I drew my Path like

Path p = new Path();
p.moveTo(100,100); //point1
p.lineTo(200,200);
p.moveTo(200,200); //point2
p.lineTo(100,200);
p.moveTo(100,200); //point3
p.lineTo(100,100);
p.close();

Which should be a closed path in my opinion. After canvas.drawPath(p, red); the triangle/path is drawn but not filled although style is FILL_AND_STROKE. What am I getting wrong?

Upvotes: 0

Views: 1045

Answers (1)

David Medenjak
David Medenjak

Reputation: 34542

There is no path to fill because your path consists of multiple lines, but no coherent polygon. See moveTo documentation, which reads:

Set the beginning of the next contour to the point (x,y).

So by calling moveTo you are only drawing lines.

Only use lineTo(), which also "moves" to the target position. And you can skip the last lineTo() going to the point of origin, close() will do this automatically.

// create a triangle
Path p = new Path();
p.moveTo(100,100); //p1
p.lineTo(200,200); //p2
p.lineTo(100,200); //p3
p.close();

Upvotes: 2

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