This is a Render Effect plugin as requested several times.
Starting from the center (that you could offset) it will draw alternated triangles as rays.
It uses the Primary and Secondary colors.
Tip:Use transparent colors
Here is the DLL
The source is available with the plugins package!
How to install
Unzip and (re)place the DLL in your Effect folder usually: C:/Program Files/Paint.NET/Effects
The User interface
.Number of rays in the circle (1,2000,dft=50):
__It works well in the range 4 to 200. Less than 4 give nothing or strange triangles. More than 500 gives strange figures and requires CPU...
.Center X % offset (-100,100,dft=0):
__Negative value to move left, positive to move right. 100% is the width of the image, 0% is at the center, 50% is on the edge of the image.
.Center Y % offset (-100,100,dft=0):
__Negative value to move up, positive to move down. 100% is the height of the image, 0% is at the center, 50% is on the edge of the image.
.Length of the ray (1,300,dft=100):
__Allows you to reduce/increase the length of the ray. It's in %, not in pixel.
.Internal radius (1,300,dft=100):
__Allows you to reduce/increase the center point/circle. It's in %, not in pixel.
.Ratio of the rays (-100,100,dft=0):
__Allows you to change the ratio of the rays to have one thick one thin and so on.
.Gradient radius (-300,300,dft=0):
__The gradient is based on the extrem limits of the triangle but here you could change the limits to make a repeatable gradient.
.Random factor (-300,300,dft=0):
__This factor is here to set the strength of the randomess. 0 is no random effect.
__Give another start to the random genetator.
__This is a group of nine small rays to quickly set the standard positions.
__Check/Uncheck to choose as you like.
__Check/Uncheck to choose as you like, filled or empty triangles. The lines are drawn with the actual brush width.
__ ( Function disabled )
__The rays are filled with a gradient from primary color to secondary color.
__As it says!
__Invert the direction for the gradients.
.Gradient as rays:
__As it says! Check the box you will understand.
__Check the box to add some chaos!