Kartaverse kvrPlane Node

[Andrew Hazelden]

Hi. Today I added new DCTL fuse to Kartaverse that provides a "plane to sphere" style of conversion. The Kartaverse "kvrPlane" node allows you to place a flat image into a 180VR, or 360VR image projection. It supports monoscopic and stereo 3D output.

There is an example comp located at the PathMap location of:

Reactor:/Deploy/Comps/Kartaverse/KartaVP/kvrPlane/Demo kvrPlane v001.comp

The node based layout is typically:
Text+/Loader/MediaIn -> kvrPlane -> AutoDomain -> kvrViewer

There are onscreen control handles in the viewer window which make it quick to position content visually using a "Center" X/Y point control to apply yaw/pitch rotation to the imagery when it is projected into the spherical image projection.

If you are working with non 1:1 aspect ratio source imagery, the "Resolution Gate Fit" control allows you to fit the imagery using either a "Stretch", "Width", or "Height" option. This is great if you want to place a small logo or other custom graphic element and not have to worry about the source image's dimensions and aspect ratio.

Note: At the moment, the 180VR and 360VR options only work on macOS systems with a Metal based GPU. Support for CUDA and OpenCL GPUs on Windows and Linux is under development now.

Regards,
Andrew Hazelden

Kartaverse Developer

[Leon]

Hi, does this work on Windows yet? I get a transparant / empty output from kvrPlane1, and the following error in the Console:

RT kernel KPLANEKernel failed to build:
"KPLANEKernel(3228): error: no suitable constructor exists to convert from "int" to "DVIP::mat3"
  mat3 m = mat3(1, 0, 0, 0, c, -s, 0, s, c);
                ^

KPLANEKernel(3228): error: expected a ")"
  mat3 m = mat3(1, 0, 0, 0, c, -s, 0, s, c);
                 ^

KPLANEKernel(3236): error: no suitable constructor exists to convert from "float" to "DVIP::mat3"
  mat3 m = mat3(c, 0, -s, 0, 1, 0, s, 0, c);
                ^

KPLANEKernel(3236): error: expected a ")"
  mat3 m = mat3(c, 0, -s, 0, 1, 0, s, 0, c);
                 ^

KPLANEKernel(3279): error: no operator "*" matches these operands
            operand types are: DVIP::mat3 * DVIP::mat3
  n = rotY(posU * 2.0f * PI) * rotX(posV * 2.0f * PI) * n;
                             ^

5 errors detected in the compilation of "KPLANEKernel".
"

Thanks

[Andrew Hazelden]

Hi Leon.

The kvrPlane node still works on macOS only. The fuse has not been updated to support other platforms yet.

In the mean time you could look at using the built-in "LatLong Patcher" node to work with a 90° FOV "front" cubic view.

Regards,

Andrew Hazelden