search

alecjacobson / computer-graphics-kinematics

Computer Graphics Assignment about Kinematics
93 stars 31 forks source link

random output #13

Closed Kennnyoung closed 5 years ago

Kennnyoung commented 5 years ago

Right now my output is very random, with same code, sometimes the animation behaves very well as expected, but sometimes the model will disappear in the end of animation. I am just curious what might cause this randomness? Also a constant behaviour is when I run the executable, the first time animation will skip first couple key frames, but when I press R to reset it, first couple key frames will be played as normal every time. Any thoughts?

Kennnyoung commented 5 years ago

nvm, figured it out

Panmani commented 5 years ago

What was the issue? I am having the same problem.

Kennnyoung commented 5 years ago

The constant behaviour is normal, as soon as you run the executable the animation time begins counting, by the time you see the animation its already couple key frame after. When you reset the animation, the time gets reset as well, so you can see all key frames. The random one just when you do cat mull interpolation, you need to connect the tail of list of key frames with its head, otherwise the index will be out of bound, if you using [] to access the list, it wont be seg fault but reading junks that got stored in the index position. If you using .at() to access the item, should produce seg fault.