Method OnRender

src/game/editor/map_grid.cpp:16–100

}

void CMapGrid::OnRender(CUIRect View)
{
	if(!m_GridActive)
	{
		return;
	}

	std::shared_ptr<CLayerGroup> pGroup = Map()->SelectedGroup();
	if(!pGroup)
	{
		return;
	}

	pGroup->MapScreen();

	float aGroupPoints[4];
	pGroup->Mapping(aGroupPoints);

	float ScreenX0, ScreenY0, ScreenX1, ScreenY1;
	Graphics()->GetScreen(&ScreenX0, &ScreenY0, &ScreenX1, &ScreenY1);

	const int LineDistance = GridLineDistance();

	const int XOffset = aGroupPoints[0] / LineDistance;
	const int YOffset = aGroupPoints[1] / LineDistance;
	const int XGridOffset = XOffset % m_GridFactor;
	const int YGridOffset = YOffset % m_GridFactor;

	const int NumColumns = (int)std::ceil((ScreenX1 - ScreenX0) / LineDistance) + 1;
	const int NumRows = (int)std::ceil((ScreenY1 - ScreenY0) / LineDistance) + 1;

	Graphics()->TextureClear();

	IGraphics::CLineItemBatch LineItemBatch;
	if(m_GridFactor > 1)
	{
		Graphics()->LinesBatchBegin(&LineItemBatch);
		Graphics()->SetColor(1.0f, 1.0f, 1.0f, 0.15f);
		for(int y = 0; y < NumRows; y++)
		{
			if((y + YGridOffset) % m_GridFactor == 0)
			{
				continue;
			}
			const float PosY = LineDistance * (y + YOffset);
			const IGraphics::CLineItem Line = IGraphics::CLineItem(ScreenX0, PosY, ScreenX1, PosY);
			Graphics()->LinesBatchDraw(&LineItemBatch, &Line, 1);
		}
		for(int x = 0; x < NumColumns; x++)
		{
			if((x + XGridOffset) % m_GridFactor == 0)
			{
				continue;
			}
			const float PosX = LineDistance * (x + XOffset);
			const IGraphics::CLineItem Line = IGraphics::CLineItem(PosX, ScreenY0, PosX, ScreenY1);
			Graphics()->LinesBatchDraw(&LineItemBatch, &Line, 1);
		}