Diagonal lines

[nielm]

If I make a 'line' shape with a certain width and height, I get a diagonal line: \ (top-left->bottom-right)...

How do I make a diagonal line in the opposite direction: / ?

Is this what 'line shapes are not fully supported' means in the docs?!

[Opus4]

Originally Posted by nielm

If I make a 'line' shape with a certain width and height, I get a diagonal line: \ (top-left->bottom-right)...

How do I make a diagonal line in the opposite direction: / ?

Try negative values. I made a line go the other direction using
Anchor X = 0.0
Anchor Y = 1.0
Fixed Width = -1.0
Fixed Height = 1.0
Anchor Point X = 1.0
Anchor Point Y = 1.0

Is this what 'line shapes are not fully supported' means in the docs?!

Line Shapes don't get drawn correctly, or at all, when 3D Acceleration is enabled... which limits them to simple vertical/horiz lines using rectangles instead. Edit: When 3D is off, the diagonal lines are visible on the Overscan adjustment screens.

- Andy

[deria]

You might suffer a performance penalty, but you could instead use an image object and draw the content of the line into the image. As long as the image object has a transparent background, you should be good to go.

I'm not a Java programmer so I'm not sure how to manipulate the bufferedimage object, but you could start with the article at:

http://www.javaworld.com/javaworld/j...-09-media.html

In .NET, this is pretty trivial. You basically create a bitmap object and then instantiate a graphics object from it which allows you to use all of the line/shape/bitmap/anything-related-to-drawing functions against the bitmap. I imagine that Java has something similar.

Behind the scenes, SageTV converts images to DirectX9 textures as soon as they're created, so once the image is created there should be no performance issues. As long as you're careful to not recreate the image every time its drawn, it shouldn't be possible to tell that any funny business is going on with regard to the line.

I was thinking about this earlier because I have a need to draw circles, arcs, and ellipse shapes.