Is it possible to use perspective camera?

[imokya]

currenty the library dosen't work with different size video source. Given a portait video source(height>width), the 3D object gets stretched. When I switch to perspective camera, the stretching issue gone, but the 3D object dosen't perfectly attatch to the marker. Is it possible to use perspective camera in the first place and aslo attatch to the marker correctly ?

[martinloretzzz]

What aspecto ratio do you use for the Perspective camera?
Try to use 4/3 or 3/4 as the aspecto for the Camera
[If the Source Stream isn't 4/3[or 3/4], maybe you should crop it to 4/3]

[imokya]

hi @0b01001101
thanks for the reply.
cause I can only access the camera frame data(fixed size raw bufferarray), there is no way I can crop the display. or Maybe create another canvas to draw and crop, but it can be resource consuming. Why the library only works in ratio 4/3? It is possible to make it work with other aspect ratios?

[imokya]

test perspective camera with 3/4 aspect ratio, 3D model dosen't attach correctly, while 4/3 ratio is fine
demo 4/3 https://www.xingway.com/ar2/basic2.html
demo 3/4 https://www.xingway.com/ar2/basic.html

[imokya]

is it an issue ralated to camera parameters file?

[martinloretzzz]

I think in the that file the aspecto is set to 4/3 so jsartoolkit expects that aspecto ratio