How to draw a lines in opengl android

Question

I've to draw squre using a lines, which will look like as following url.

http://www.thinkingwriting.qmul.ac.uk/wishees/tutorials/square.gif

Could you please tell me how to draw it in android using opengls GL_LINES or GL_LINES_STRIP

score 3 · Accepted Answer · answered May 09 '12 at 19:07

3

This is fairly simple, assuming you already have a working OpenGL context:

Set up an orthogonal projection
Build a vertex buffer containing the vertices of your square
When it comes time to render, set line rendering attributes (e.g. glLineWidth)
Render the vertex buffer using GL_LINE_LOOP or GL_LINES (depending how you set up your vertices)

Take a look at this introduction to vertex buffers to get an idea of where to start. There are some much simpler tutorials but this one offers more background than most.

answered May 09 '12 at 19:07

ravuya

8,586
4
30
33

Can you provide me some example who draws a lines? – Vishwanath Deshmukh May 09 '12 at 19:27
wow, thanks for the link! it's clear and covers pretty much everything I needed to get things running in ES (I have some background in "classic" OpenGL) – andr Dec 14 '12 at 05:01

How to draw a lines in opengl android

1 Answers1