Method GatherSprites

trinity/Sprite2d/Tr2Sprite2dLine.cpp:31–157

}

void Tr2Sprite2dLine::GatherSprites( Tr2Sprite2dScene* renderer )
{
	CCP_STATS_ZONE( __FUNCTION__ );

	if( !m_display || ( m_spriteEffect == TR2_SFX_NONE ) )
	{
		return;
	}

	if( m_isDirty )
	{
		if( !ValidateAndSetTextures( renderer ) )
		{
			return;
		}

		renderer->SetSpriteEffect( m_spriteEffect );
		renderer->SetTileMode( S2D_TS_TILE_X | S2D_TS_TILE_Y );

		SetRegularRenderState( renderer );

		Vector2 from = m_translationFrom + m_translation;
		Vector2 to = m_translationTo + m_translation;

		Vector2 d = m_translationTo - m_translationFrom;
		float segmentLength = Length( d );
		d = Normalize( d );

		// Rotate 90 degrees
		Vector2 normal;
		normal.x = d.y;
		normal.y = -d.x;

		float halfWidthFrom = 0.5f * m_widthFrom;
		float halfWidthTo = 0.5f * m_widthTo;

		// Anti-aliased lines are rendered with a quad that is larger. This is then
		// compensated for in the pixel shader, using the extra pixels to fill in
		// alpha values to do the anti-aliasing

		bool isAA = m_spriteEffect == TR2_SFX_FILL_AA;
		float pixelWidthFromInTexels;
		float pixelWidthToInTexels;
		if( isAA )
		{
			halfWidthFrom += 2.0f;
			halfWidthTo += 2.0f;

			pixelWidthFromInTexels = 1.0f / ( m_widthFrom + 4.0f );
			pixelWidthToInTexels = 1.0f / ( m_widthTo + 4.0f );
		}

		float texOffset1 = m_textureOffsetBase - m_textureOffset;
		float texOffset2 = m_textureOffsetBase + segmentLength / m_textureWidth - m_textureOffset;

		Tr2Sprite2dVertexBase verts[4];

		Tr2Sprite2dVertexBase& v0 = verts[0];