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How to rotate the Y axis of a 3d vector according to another 3d vector?
I have vector A rotating randomly around the Y axis (for example [-1, -2, 3]). I have vector B that is the velocity of my moving Emitter.
I want to rotate the Y axis of vector A to the direction of vector B. I want to make particles spread like firework trails.
Please help calculate the transformed vector A. Thanks!
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4 Replies
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I don’t fully understand what you are asking for? Could you try wording it differently or providing some screenshots?
– The Great Szalam
(The ‘Great’ stands for ‘Not So Great, in fact, Extremely Humble’)No trees were harmed in the creation of this message, but several thousand electrons were mildly inconvenienced.
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Hi Michael! Thank you for your attention!
My emitter shoots several particles up and spread out around the Y axis like a cone. When the emitter moves, I want the cone to rotate along with the velocity of the emitter, like a firework trail. It can be easily done in 2D by rotating the Z. But in 3D I don’t know how to transform all of them.
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The problem is you know your project, but I don’t. So what you think is a good explanation isn’t. I’m going to need screenshots or some drawings of what you want.
I don’t even know how you’re creating your particles.
– The Great Szalam
(The ‘Great’ stands for ‘Not So Great, in fact, Extremely Humble’)No trees were harmed in the creation of this message, but several thousand electrons were mildly inconvenienced.
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Here’s a start:
get global rotation / orientation of a child object [link]
Walter Soyka
Designer & Mad Scientist at Keen Live [link]
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
@keenlive | RenderBreak [blog] | Profile [LinkedIn]
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