Lines Animation: Horizontal, Vertical, Diagonal

[Boleeman]

A Lines Animation with Horizontal, Vertical, Diagonal Lines.

A bit hypnotic.

On a TBgraBmp and also on a TPaintbox.

Looking closely at the png's the Paintbox version has jaggies on the diagonal lines.

I thought an extra effect would be to make the lines "Neon Glow" a bit with the bgrabmp version.

[Boleeman]

This produces Blurred lines/Glow type effect on bgraBmp but is incredibly slow.

I love the effect of the intersection points of the lines.

Is there a better way to produce a similar effect, but make it faster ? I wonder ?

[circular]

Yes, it is possible to make it faster using OpenGL. I suggest to begin with to look at how to do some geometry and then blur:
opengltest0 shows how to draw a geometric shape.
opengltest4 shows how to apply blur to a texture.
opengltest5 shows how to use a framebuffer (see attached picture).

For the blur lines, the steps would be to create a framebuffer, draw the lines in it, retrieve it as a texture, apply a blur to it and display it.

[Boleeman]

Thanks Circular for that advice. I will need to install Lazarus on another laptop and the Dev branch of BgraBmp.

Much appreciated for your kind/wise hints on how to extend the animation features.
I was also going to maybe go back to Josh's and DZandaa's animated examples.

What I did also notice was that the screen shot of the program looks different when I compiled on an Intel based laptop.
(with part of the image cut off), where as compiling to my AMD based laptop produces the correct sized image.
Not exactly sure why?