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hammer/ToolAxisHandle.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#include "stdafx.h"
+#include "History.h"
+#include "MainFrm.h"			// For ObjectProperties
+#include "MapDoc.h"
+#include "MapAxisHandle.h"
+#include "MapPointHandle.h"
+#include "MapView2D.h"
+#include "Render2D.h"
+#include "StatusBarIDs.h"		// For SetStatusText
+#include "ToolManager.h"
+#include "ToolAxisHandle.h"
+#include "ToolPointHandle.h"
+#include "Selection.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include <tier0/memdbgon.h>
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Constructor.
+//-----------------------------------------------------------------------------
+CToolAxisHandle::CToolAxisHandle(void)
+{
+	m_pAxis = NULL;
+	m_nPointIndex = 0;
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Attaches the point to the tool for manipulation.
+//-----------------------------------------------------------------------------
+void CToolAxisHandle::Attach(CMapAxisHandle *pAxis, int nPointIndex)
+{
+	if ((pAxis != NULL) && (nPointIndex < 2))
+	{
+		m_pAxis = pAxis;
+		m_nPointIndex = nPointIndex;
+	}
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Handles left button down events in the 2D view.
+// Input  : Per CWnd::OnLButtonDown.
+// Output : Returns true if the message was handled, false if not.
+//-----------------------------------------------------------------------------
+bool CToolAxisHandle::OnLMouseDown2D(CMapView2D *pView, UINT nFlags, const Vector2D &vPoint)
+{
+	//
+	// Activate this tool and start dragging the axis endpoint.
+	//
+	ToolManager()->PushTool(TOOL_AXIS_HANDLE);
+	pView->SetCapture();
+
+	CMapDoc *pDoc = pView->GetMapDoc();
+	GetHistory()->MarkUndoPosition(pDoc->GetSelection()->GetList(), "Modify Axis");
+	GetHistory()->Keep(m_pAxis);
+
+	return true;
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Handles left button up events in the 2D view.
+// Input  : Per CWnd::OnLButtonUp.
+// Output : Returns true if the message was handled, false if not.
+//-----------------------------------------------------------------------------
+bool CToolAxisHandle::OnLMouseUp2D(CMapView2D *pView, UINT nFlags, const Vector2D &vPoint)
+{
+	// dvsFIXME: do we need to update the point here?
+
+	ToolManager()->PopTool();
+	ReleaseCapture();
+
+	CMapDoc *pDoc = pView->GetMapDoc();
+	pDoc->UpdateAllViews( MAPVIEW_UPDATE_TOOL );
+
+	return true;
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Handles mouse move events in the 2D view.
+// Input  : Per CWnd::OnMouseMove.
+// Output : Returns true if the message was handled, false if not.
+//-----------------------------------------------------------------------------
+bool CToolAxisHandle::OnMouseMove2D(CMapView2D *pView, UINT nFlags, const Vector2D &vPoint)
+{
+	//
+	// Make sure the point is visible.
+	//
+	pView->ToolScrollToPoint( vPoint);
+
+	//
+	// Snap the point to half the grid size. Do this so that we can always center
+	// the axis even on odd-width objects.
+	//
+	Vector vecWorld;
+	pView->ClientToWorld(vecWorld, vPoint);
+
+	CMapDoc *pDoc = pView->GetMapDoc();
+	pDoc->Snap(vecWorld, constrainHalfSnap);
+
+	//
+	// Move to the snapped position.
+	//
+	Vector vecPos[2];
+	m_pAxis->GetEndPoint(vecPos[m_nPointIndex], m_nPointIndex);
+
+	vecPos[m_nPointIndex][pView->axHorz] = vecWorld[pView->axHorz];
+	vecPos[m_nPointIndex][pView->axVert] = vecWorld[pView->axVert];
+	
+	m_pAxis->UpdateEndPoint(vecPos[m_nPointIndex], m_nPointIndex);
+
+	int nOtherIndex = (m_nPointIndex == 0);
+	m_pAxis->GetEndPoint(vecPos[nOtherIndex], nOtherIndex);
+
+	//
+	// Update the status bar and the views.
+	//
+	char szBuf[128];
+	sprintf(szBuf, " (%.0f %.0f %0.f) ", vecPos[m_nPointIndex][0], vecPos[m_nPointIndex][1], vecPos[m_nPointIndex][2]);
+	SetStatusText(SBI_COORDS, szBuf);
+
+	pDoc->UpdateAllViews( MAPVIEW_UPDATE_TOOL );
+
+	return true;
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Renders the tool in the 2D view.
+// Input  : pRender - The interface to use for rendering.
+//-----------------------------------------------------------------------------
+void CToolAxisHandle::RenderTool2D(CRender2D *pRender)
+{
+	SelectionState_t eState = m_pAxis->SetSelectionState(SELECT_MODIFY, m_nPointIndex);
+	m_pAxis->Render2D(pRender);
+	m_pAxis->SetSelectionState(eState);
+}
+
+