So, lets say I have a base actor. I need to draw a line(in a circle) across the landscape. It would be prefered that this line were to adjust to height changes in the landscape. These lines will be created by players during runtime. I am sure there is a way to do this, I am unsure, however, of how to do it myself. Thanks for your time.
Given a center position and a radius, you can find any point on a circle:
X = r * cos(theta)
Y = r * sin(theta)
just increment theta by the number of segments you want to have in your circle.
You’ll also want to use these X/Y values to create a ray which intersects with the landscape to grab the Z value. Use “Single Line Trace” for this.
Once you’ve got an array of 3D vectors for your circle plotted out, you can draw a line segment to connect each of the vertices together. Now you have a circle projected onto your landscape!
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so how exactly do you draw each segment? THAT is the question… and don’t say debugline 