Looking for a way to draw a line

[chris64]

I’m working on an Iphone app. I need to draw a continuous line (with varrying degrees of thickness and color) in this case it’s similar to a line chart. I could live if it was only 2d just fine. If it was in 3d it might be fun to make it animated but not required.

How is this typically done? Line renderer seems like an option except from what I’m reading it uses the partical system and particals run very slow on Iphone so that has me worried.

I just want to do something like ploting a line graph. Any thoughts? I’m just looking for the ideal way to do this.

[Eric5h5]

starscenesoftware.com - starscenesoftware Resources and Information. The line renderer doesn’t use the particle system, but it’s not very flexible either. Also, particles themselves aren’t slow on the iPhone, but if you have lots of large particles, that kills your fill rate.

–Eric

[chris64]

Oh I’ll have to look into that - I looked last night but must’ve been moretired than I realized because I just found this:

function OnPostRender() {
CreateLineMaterial();
// set the current material
lineMaterial.SetPass( 0 );
GL.Begin( GL.LINES );
GL.Color( Color(1,1,1,0.5) );
GL.Vertex3( 0, 0, 0 );
GL.Vertex3( 1, 0, 0 );
GL.Vertex3( 0, 1, 0 );
GL.Vertex3( 1, 1, 0 );
GL.Color( Color(0,0,0,0.5) );
GL.Vertex3( 0, 0, 0 );
GL.Vertex3( 0, 1, 0 );
GL.Vertex3( 1, 0, 0 );
GL.Vertex3( 1, 1, 0 );
GL.End();
}

I don’t need 3d graphic level performance I don’t think - so this might work.