RC Helicopter - Belt Text Animation

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Flight simulation for PCs - VR Ready for an exciting virtual reality experience - Target download date is later this year 2020. Planes, quads and cars are to be added in the future.

Two fundamentally different ways to make text appear to be scrolling are: (1) simply move the object, and (2) change the position of the image as applied to an object’s face.

The simulator is using OpenGL as its API. The following description is probably only going to be meaningful to people familiar with the so called “Graphics Pipeline”. RCS is currently using/combining both methods 1) & 2) above. It’s a bit hacky but it works!

Technical description:

The belt exists as several sections, each which is animated 1 tooth section, and then moved back to its start position and the animation repeated.

The transformations are transitions for the straight sections and rotations for the pulley sections.

Where the straight sections meet up with the pulley sections, the vertices are transformed such that they approximately align to produce a continuous motion.

The texture coordinates are transformed (once every complete tooth transformation/step) across a texture which contains the entire belt’s text.

Multiple UV map faces (1 for each belt section) travel from right to left and then back to the start, repeatedly, also working their way from bottom to top, which then start again at the bottom.

Additional animation & effects demonstrations can be found here: https://www.rcsimanic.com/video-collection/animation-effects.php