SahderGraph achieve billboards

At this point: 2020.1.30
has a certain degree of knowledge of linear algebra + graphics. The attempt to achieve the billboard effect in the Shader Graph.

FIG left as default Shader. The right for the billboard effect, it will always face the camera.

principle:

By linear combination. We need to find a rotation matrix. This rotation matrix 3x3.
is a linear combination of three vectors are:

Apex pointing toward the camera (here taking the negative direction, because the normal direction triangle Quad Z-axis negative direction is the Quad.)
Cross product (vector 1 and the results of (0,1,0)) to give the right direction
Cross product (vector result 2,1) to give the direction.

Note here that Unity, a left-handed coordinate system.

practice:

On the way, due to the View Direction in Vertex stage "undeclared identifier (not identifiers)," so there needs its own calculation, and coordinate transformation.

Intelligent Recommendation

1761. Blocking billboards (merged in the two -dimensional interval)

Articles directory Question Ideas Code Question During the long milk production period, cow Bei Qian likes to stare at the two huge rectangular billboards across the road through the window, which say...

hexo in yilia theme and add animated billboards cancel live2d

Adding Kanban Mother Installation depends in the blog directory npm install --save hexo-helper-live2d Under the theme of_config.ymlConfiguration information Hexo _config.yml the configuration file is ...

Yahoo develops "smart" billboards that capture people's thoughts through cameras and microphones

Through the "smart" billboards with built-in cameras and microphones on the streets or in buses, Yahoo will develop more personalized smart billboards by scanning people's thoughts throughou...

[Android Development] Example 2-Open a new thread to realize electronic billboards

Using the multi-threaded processing technology learned before, we will make a new thread to realize the electronic billboard s project Interface layout file, adding ImageView picture control, used to ...

Cesium loading billboards, Billboard (12) via Geojson batch

GeoJsonDataSourceOfficial documentation entityOfficial documentation...