It is currently Wed Dec 11, 2019 4:03 pm

## TreeIt Wind Animation

Any thing to do with Tree It, post and read about it here.
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wiseguy

• Posts: 3
• Joined: Wed Jan 16, 2019 2:05 pm
Without any luck, I'm trying to understand the vertex animation code in the example shaders Tree.fx and Leaf.fx.

Does anyone have a clue how all those wind parameters work?

Why does it have to be that complex?

Code: Select all
`// aplication time scaled with factors (0.1, 1, 2, 20) and divided by 57.3 (degrees to radians?)float4 TreeWindTimer; float4 TreeWindSize={500, 250, 75, 0.5f};float3 TreeWindPower={3, 3, 1.5};float3 TreeGlobalWind=(mul(IN.Pos,World).xyz/TreeWindSize.x)+TreeWindTimer.x;TreeGlobalWind.x=1+abs(dot(cos(TreeGlobalWind),sin(TreeGlobalWind)));float3 TreeWindForce=normalize(IN.Pos.xyz)+TreeWindTimer.y;TreeWindForce.x=sin(TreeWindForce.x);TreeWindForce.y=0;TreeWindForce.z=cos(TreeWindForce.z);float3 WindAnimate=(TreeWindForce*TreeWindPower.x)*(IN.Pos.y/TreeWindSize.y);float3 TreeWindVariant=normalize(float3(IN.Pos.x,IN.Pos.y/TreeWindSize.z,IN.Pos.z))+TreeWindTimer.z+(IN.Color.y*10);WindAnimate +=(cos(TreeWindVariant)*TreeWindPower.y)*pow(IN.Color.z,2);float4 NewPos=float4(IN.Pos.xyz+WindAnimate*TreeGlobalWind.x,1);`

Crashy

• Posts: 2
• Joined: Thu May 23, 2019 4:50 pm
Hi,