void main(float4 position : POSITION,
			  float3 normal   : NORMAL,
			  float2 uv		  : TEXCOORD0,
			  out float4 oPosition : POSITION,
			  out float2 oUv	   : TEXCOORD0,
			  out float4 colour    : COLOR,
			
			  uniform float4x4 worldViewProjMatrix,
			  uniform float size_value,
			   uniform float time
			)
{

   float4 mypos = position;
   mypos.xyz += size_value * (1.0 + (sin(time * 5.0) + 1.0)  / 5.0 ) * normal; 
   oPosition = mul(worldViewProjMatrix, mypos);
	
}