Method PrepareSpriteVerts

trinity/Sprite2d/Tr2Sprite2dScene.cpp:828–923

}

bool Tr2Sprite2dScene::PrepareSpriteVerts(
	Tr2Sprite2dD3DVertex* destVerts,
	const Vector2& pos,
	float width,
	float height,
	Tr2SpriteObjectEffect sfx )
{
	CCP_STATS_ZONE( __FUNCTION__ );

	if( !TexturesReady() )
	{
		CCP_STATS_INC( spriteSceneTextureNotReady );
		return false;
	}

	//texture coordinates
	Vector2 uv[2][4];
	Vector2 uvInitial[2][4];

	SetSpriteVerticesUVs( uv, width, height );
	memcpy( uvInitial, uv, sizeof( Vector2 ) * 2 * 4 );


	//set vertex data
	Vector2 verts[4] = {
		pos,
		pos + Vector2( width, 0.f ),
		pos + Vector2( width, height ),
		pos + Vector2( 0.f, height )
	};


	if( ( sfx == TR2_SFX_BLUR ) || ( sfx == TR2_SFX_GLOW ) )
	{
		float textureWidthReciprocal = 1.f;
		float textureHeightReciprocal = 1.f;
		if( m_texture[0] )
		{
			textureWidthReciprocal = 1.f / m_texture[0]->GetTextureWidth();
			textureHeightReciprocal = 1.f / m_texture[0]->GetTextureHeight();
		}

		verts[0].x -= 1;
		verts[0].y -= 1;
		uv[0][0].x -= textureWidthReciprocal;
		uv[0][0].y -= textureHeightReciprocal;

		verts[1].x += 1;
		verts[1].y -= 1;
		uv[0][1].x += textureWidthReciprocal;
		uv[0][1].y -= textureHeightReciprocal;

		verts[2].x += 1;
		verts[2].y += 1;
		uv[0][2].x += textureWidthReciprocal;
		uv[0][2].y += textureHeightReciprocal;

		verts[3].x -= 1;