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ssjskipp — Lasers and Mirrors
Published: 2008-10-25 22:39:13 +0000 UTC; Views: 556; Favourites: 5; Downloads: 7
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Description
Moved to scraps until I fix it >>.Okay, fixed.
Okay, j/k, not fixed yet >>.
So, we learned about mirrors in physics (woo~). So, I made this little laser and mirror thinggy.
Each mirror is represented by a vector (The blue lines drawn onto it). I have a bunch pre-placed, but really, they could be added/generated if need be. Also, the laser's starting point is arbitrary. Made a neat function to calculate the laser for X iterations. 25 is default, so here, the laser will bounce 25 times before giving up.
Click + Drag on a mirror or the laser to rotate it. Have...fun? Iunno, just a neat experiment. Perhaps I will do mirrors + light next? Or maybe lights and shadows! WHO KNOWS!!!!
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Comments: 14
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Thick Laser!
Aside from all the errors that have been pointed out, this is a really nifty thing. You never cease to amaze!
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lol XD, if only it was working, I had a game idea with this engine :3!
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despite being messed up (as pointed out above), definitely cool
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Indeed :3. wait 'till it's fixed.
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aye, it's wrong
probably you have the reflection formula right (it's easily found on the net), but your normals are borked; try using the absolute value of the dot product in the reflection computation vector.
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Well, the normals are correct, like, I can draw them on to show you (it picks the correct normal an all, right direction and everything), but it's not quite right with what to do after. I suspect my error is somewhere else in it.
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Also easily demonstrated by shooting the left mirror. Should go up, but it comes almost straight back.
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Indeed, the normals work, but there's a screw up somewhere there...
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Yeah, as *wonderwhy-ER said, your angle's don't seem right. Screenshot: [link] Circle around the area, green line is what I would expect.
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Hmm something is wrong no? Or your material is nor really a mirror? I mean that for mirror laser should bounce with same angle it flew in but in your case it is not...
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It bounces off with the angle between light and normal, since the mirror is a flat surface. I messed up the math a bit, and submitted it once I got it to bounce more than once >>. Fixing as we speak.
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Hmm still little bit wrong for mirrors in Centr-Top and Bottom-Right
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Yeah that what I meant 
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