Transitions

[rubicu]

Hello there,

I am a total newbie to Hyperion...

Is there a tutorial that shows how to do setup (initialize) different scenes, and switch between them over time? E.g let' s imagine I want to make a demo (for the demoscene) that has scene A and B. From time 0-60s I want to render scene A, and from time 60-120s I want to render scene B. How to switch (activate/deactivate) scenes over time?

And then a bit more advanced: How to make "Transitions" between 2 scenes? Let's imagine that we have scene A and scene B, and the following timeline:
0-60s: scene A only
60-65s: transition between scene A and scene B
65-120: scene B only

A transition could be the following:
a) a plane (filling the whole viewport) with pixelshader with 2 input textures. rendering scene A and scene B to the input textures. the pixelshader also has an input variable (float) with a range from 0-1, that affects the pixelshader code to show input texture A at a value of 0, input texture B at a value of 1 and anything fancy in between. (e.g. in simplest case it is just a crossfade)
b) an entire 3d scene that has (among others) 2 objects textured scene A and B rendered to texture, as well as a camera/object movement so that at the beginning of the movement texture A would fill the screen, and at the end, texture B fills the screen.

Basically, a) can be seen as a special subset of b).

Let me know if there are tutorials for anything like that. If there isn't, this is my first feature request! :-)

[JeGX]

Yeah a question about demomaking with Hyperion. Cool 

Hyperion manages one scene only. So transition between scenes isn't possible. But you can split your objects in several groups
and consider each group as a scene. So the transition between 2 groups can be done as follows in LUA:
- start hud transition with HYP_Hud.DoFadeInOut()
- disable all objects of the first group
- enable all objects of the second group
This is a simple scene transition but it works!

For a more advanced scene transition, you need a total control of the RTT (render to texture) process.
Hyperion support RTT but I never had the chance to test it seriously. Maybe this code sample could help you: http://www.ozone3d.net/repository_hyperion_cs_texturing.php#cs_89

Have you seen this very small demoscene-like prod: http://www.ozone3d.net/demos_projects/suffocate_sb01.php

And don't hesitate to post all your feature requests in this forum. All relevant ones will be added in the new Hyperion I'm working on