i found now what the 3d model file used most is the skeletal animation file,key frame animation file is less and less.what i wanna ask is now where the key animation can be used?which format is still being used?md2 or other?and is it worthy to learn??thanks people,i am a beginner.
forgive my poor English!!Merry Christmas!!!
Is the key frame animation file worthy to learn?
Hi! You are using wrong with terms.
"Key frame animation" is about interpolating values across time, while just defining a few "key" values at specific moments. This is still widely used.
The MD2 file used key-framed "vertex animation". This is rarely used nowadays because it's not flexible & eats a lot of memory and bandwidth. The only exception are facial expressions, where usually a "delta" variation of the technique is used. Anyways vertex animation is pretty simple to learn.
"Vertex animation" was dropped in favour of "skeletal animation"; which is probably a bit harder to understand at the beginning, but more powerful, flexible; and replaces the Memory consumption with more CPU/GPU consumption (which is a good thing; computational power grows faster than memory size and bandwidth)
In both cases (vertex & skeletal animations) key frames are used.
Edit: Some modern games (i.e. Assassin's Creed & Uncharted) also use IK (inverse kinematics) in real time in addition to keyframe animation. This makes the animation a lot more interactive & unique. However IK is definitely not for beginners.
Cheers & Merry xmas to you too
Dark Sylinc
"Key frame animation" is about interpolating values across time, while just defining a few "key" values at specific moments. This is still widely used.
The MD2 file used key-framed "vertex animation". This is rarely used nowadays because it's not flexible & eats a lot of memory and bandwidth. The only exception are facial expressions, where usually a "delta" variation of the technique is used. Anyways vertex animation is pretty simple to learn.
"Vertex animation" was dropped in favour of "skeletal animation"; which is probably a bit harder to understand at the beginning, but more powerful, flexible; and replaces the Memory consumption with more CPU/GPU consumption (which is a good thing; computational power grows faster than memory size and bandwidth)
In both cases (vertex & skeletal animations) key frames are used.
Edit: Some modern games (i.e. Assassin's Creed & Uncharted) also use IK (inverse kinematics) in real time in addition to keyframe animation. This makes the animation a lot more interactive & unique. However IK is definitely not for beginners.
Cheers & Merry xmas to you too
Dark Sylinc
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