public static Vector2[] BuildUVs(Texture2DContainer a_rTextureContainer, Vector2[] a_rRenderMeshUVs, Uni2DTextureAtlas a_rTextureAtlas)
{
// UV data
Rect oUVRect = new Rect(0.0f, 0.0f, 1.0f, 1.0f);
bool bIsUVRectFlipped = false;
// No atlas
if (a_rTextureAtlas == null)
{
oUVRect = new Rect(0.0f, 0.0f, 1.0f, 1.0f);
bIsUVRectFlipped = false;
}
else if (!string.IsNullOrEmpty(a_rTextureContainer.GUID) && a_rTextureAtlas.GetUVs(a_rTextureContainer.GUID, out oUVRect, out bIsUVRectFlipped) == false) // Atlas
{
// Not found in atlas!!!
Debug.LogError("Uni2D: Atlas \'" + a_rTextureAtlas.name + "\' does not contain the texture with GUID \'" + a_rTextureContainer.GUID + "\'."
+ "\nCheck your animation clip and atlas settings.", a_rTextureAtlas);
}
Vector2[] oMeshUVs = a_rRenderMeshUVs;
int iVertexCount = oMeshUVs.Length;
// UV normalization (computes mesh UVs coords in atlas UVs space)
Vector2[] oNormalizedMeshUVs = new Vector2[iVertexCount];
Vector2 f2UVOffset; // Position (== min coords) of sprite UV rect in atlas. (0;0) if not atlased
Vector2 f2UVRange; // UV range (== max coords - position) in atlas. (1;1) if not atlased
// If UV rect is not flipped...
if (bIsUVRectFlipped == false)
{
f2UVOffset = new Vector2(oUVRect.xMin, oUVRect.yMin);
f2UVRange = new Vector2(oUVRect.xMax, oUVRect.yMax) - f2UVOffset;
for (int iUVIndex = 0; iUVIndex < iVertexCount; ++iUVIndex)
{
oNormalizedMeshUVs[iUVIndex] = f2UVOffset + Vector2.Scale(f2UVRange, oMeshUVs[iUVIndex]);
}
}
else // UV rect is flipped
{
f2UVOffset = new Vector2(oUVRect.xMax, oUVRect.yMin);
f2UVRange = new Vector2(oUVRect.xMin, oUVRect.yMax) - f2UVOffset;
for (int iUVIndex = 0; iUVIndex < iVertexCount; ++iUVIndex)
{
Vector2 f2UV = oMeshUVs[iUVIndex];
// Need to swap UV coords
oNormalizedMeshUVs[iUVIndex] = f2UVOffset + new Vector2(f2UVRange.x * f2UV.y, f2UVRange.y * f2UV.x);
}
}
return(oNormalizedMeshUVs);
}
public static Vector2[] BuildUVs( Texture2DContainer a_rTextureContainer, Vector2[ ] a_rRenderMeshUVs, Uni2DTextureAtlas a_rTextureAtlas )
{
// UV data
Rect oUVRect = new Rect();
bool bIsUVRectFlipped = false;
// No atlas
if( a_rTextureAtlas == null )
{
oUVRect = new Rect( 0.0f, 0.0f, 1.0f, 1.0f );
bIsUVRectFlipped = false;
}
else if( !string.IsNullOrEmpty( a_rTextureContainer.GUID ) && a_rTextureAtlas.GetUVs( a_rTextureContainer.GUID, out oUVRect, out bIsUVRectFlipped ) == false ) // Atlas
{
// Not found in atlas!!!
Debug.LogError( "Uni2D: Atlas \'" + a_rTextureAtlas.name + "\' does not contain the texture with GUID \'" + a_rTextureContainer.GUID + "\'."
+ "\nCheck your animation clip and atlas settings.", a_rTextureAtlas );
}
Vector2[ ] oMeshUVs = a_rRenderMeshUVs;
int iVertexCount = oMeshUVs.Length;
// UV normalization (computes mesh UVs coords in atlas UVs space)
Vector2[ ] oNormalizedMeshUVs = new Vector2[ iVertexCount ];
Vector2 f2UVOffset; // Position (== min coords) of sprite UV rect in atlas. (0;0) if not atlased
Vector2 f2UVRange; // UV range (== max coords - position) in atlas. (1;1) if not atlased
// If UV rect is not flipped...
if( bIsUVRectFlipped == false )
{
f2UVOffset = new Vector2( oUVRect.xMin, oUVRect.yMin );
f2UVRange = new Vector2( oUVRect.xMax, oUVRect.yMax ) - f2UVOffset;
for( int iUVIndex = 0; iUVIndex < iVertexCount; ++iUVIndex )
{
oNormalizedMeshUVs[ iUVIndex ] = f2UVOffset + Vector2.Scale( f2UVRange, oMeshUVs[ iUVIndex ] );
}
}
else // UV rect is flipped
{
f2UVOffset = new Vector2( oUVRect.xMax, oUVRect.yMin );
f2UVRange = new Vector2( oUVRect.xMin, oUVRect.yMax ) - f2UVOffset;
for( int iUVIndex = 0; iUVIndex < iVertexCount; ++iUVIndex )
{
Vector2 f2UV = oMeshUVs[ iUVIndex ];
// Need to swap UV coords
oNormalizedMeshUVs[ iUVIndex ] = f2UVOffset + new Vector2( f2UVRange.x * f2UV.y, f2UVRange.y * f2UV.x );
}
}
return oNormalizedMeshUVs;
}
