Creating 2D drawable textures

Troubleshooting graphics
#1

I need to create accurate scientific graphs that I can apply to Quads and to the faces of cylinders within JME3 (which I understand will be an array of Quads, anyhow).



My needs will include some form of



  • drawLine(X1, y1, x2, y2, width, ColorRGBA)

  • fillRect(int x1, int y1, int x2, int y2, ColorRGBA)

  • printString(String chars, int x1, int y1, ColorRGBA, etc, etc)



I'm a bit confused by Image, Texture, and Material and see no clear means within Image (which I gather is the final source of this bitmap) to supply its data except upon construction.

Should I be using Java2D to create these images, and somehow there and then to hand these into the JME world of Images and Textures? Will I be able to semi-efficiently alter textures in a dynamic manner? Limited whiteboarding may be nice.

Thanks for any direction to get me started.

tone
#2

I don’t know if it still works 100% but heres a “paintable” texture for jME3: http://hub.jmonkeyengine.org/groups/contribution-depot-jme3/snippets/single/14/

1 Like
#3

use material.setTexture(“ColorMap”, texture);

where texture is constructed from a bufferedimage with these methods.



[java]

/** this method calls dispose on Graphics2D g /

public static Texture2D createTexture(BufferedImage img, Graphics2D g, Texture.MinFilter min, Texture.MagFilter mag)

{

if (g != null) g.dispose();

AWTLoader loader = new AWTLoader();

Texture2D tex = new Texture2D(loader.load(img, true));



tex.setMinFilter(min);

tex.setMagFilter(mag);

return tex;

}



/* create a texture from this image without min maps.

  • this method calls dispose on Graphics2D g

    */

    public static Texture2D createTexture(BufferedImage img, Graphics2D g)

    {

    return createTexture(img, g, Texture.MinFilter.NearestNoMipMaps, Texture.MagFilter.Nearest);

    }

    [/java]