Dolly behavior in first person mode is different when scrolling up and down
mrok-gmx-de opened this issue · comments
Describe the bug
The behavior of the mouse wheel in the first person perspective is not as the user expects, as the camera moves away from the object faster when scrolling down than it approaches when scrolling up.
To Reproduce
- In the Fist person example, if you set the
infinity dolly
propertiety checked and the wheel to DOLLY, you may notice a difference between the distance to the cube after scrolling up and down. - You can test this by bringing the bottom edge of the cube to the bottom border of the window and turning the wheel up and down one or more times.
Code
No response
Live example
https://yomotsu.github.io/camera-controls/examples/first-person.html
Expected behavior
I would expect the edge to be at in the same place after turning the wheel up and down an equal number of times.
The same goes to the behavior when pressing the wheel for a speed dolly.
Screenshots or Video
Device
Desktop
OS
Windows
Browser
Chrome
Thanks for your report.
I guess I need to prepare a mouse device for reproduction.
Aside from that, the below code seems to work as expected.
_zoomInternal()
is used in the wheel event internally.
cameraControls._zoomInternal(10,.5,.5);
// then...
cameraControls._zoomInternal(-10,.5,.5);