1 /*****************************************************************************
4 ** Name: dlgreconstruct.cpp
5 ** Purpose: Reconstruction Animation Dialog
6 ** Programmer: Kevin Rosenberg
7 ** Date Started: August 2000
9 ** This is part of the CTSim program
10 ** Copyright (c) 1983-2001 Kevin Rosenberg
12 ** $Id: dlgreconstruct.cpp,v 1.16 2001/01/29 23:11:32 kevin Exp $
14 ** This program is free software; you can redistribute it and/or modify
15 ** it under the terms of the GNU General Public License (version 2) as
16 ** published by the Free Software Foundation.
18 ** This program is distributed in the hope that it will be useful,
19 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
20 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 ** GNU General Public License for more details.
23 ** You should have received a copy of the GNU General Public License
24 ** along with this program; if not, write to the Free Software
25 ** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 ******************************************************************************/
29 #pragma implementation "dlgreconstruct.h"
32 // For compilers that support precompilation, includes "wx.h".
33 #include "wx/wxprec.h"
41 #include "wx/button.h"
42 #include "wx/stattext.h"
43 #include "wx/layout.h"
46 #include "wx/settings.h"
47 #include "wx/dcclient.h"
51 #include "dlgreconstruct.h"
56 static const int LAYOUT_X_MARGIN = 4;
57 static const int LAYOUT_Y_MARGIN = 4;
60 const int ReconstructDialog::ID_BTN_PAUSE = 19998;
61 const int ReconstructDialog::ID_BTN_STEP = 19999;
62 const int ReconstructDialog::MAX_IMAGE_X = 400;
63 const int ReconstructDialog::MAX_IMAGE_Y = 400;
66 BEGIN_EVENT_TABLE(ReconstructDialog, wxDialog)
67 EVT_BUTTON(wxID_CANCEL, ReconstructDialog::OnCancel)
68 EVT_BUTTON(ID_BTN_PAUSE, ReconstructDialog::OnPause)
69 EVT_BUTTON(ID_BTN_STEP, ReconstructDialog::OnStep)
70 EVT_CLOSE(ReconstructDialog::OnClose)
71 EVT_PAINT(ReconstructDialog::OnPaint)
74 IMPLEMENT_CLASS(ReconstructDialog, wxDialog)
77 ReconstructDialog::ReconstructDialog (Reconstructor& rReconstruct, const Projections& rProj,
78 ImageFile& rIF, const int iTrace, wxWindow *parent)
79 : wxDialog(parent, -1, "Reconstruction", wxDefaultPosition), m_rReconstructor(rReconstruct),
80 m_rProjections(rProj), m_rImageFile(rIF), m_pSGPDriver(NULL), m_pSGP(NULL),
81 m_iTrace(iTrace), m_pDC(NULL), m_btnAbort(0), m_btnPause(0), m_btnStep(0)
86 while ( m_parentTop && m_parentTop->GetParent() )
87 m_parentTop = m_parentTop->GetParent();
89 m_btnAbort = new wxButton(this, wxID_CANCEL, _("Cancel"));
90 wxLayoutConstraints* c = new wxLayoutConstraints;
91 c->right.SameAs(this, wxRight, 2*LAYOUT_X_MARGIN);
92 c->bottom.SameAs(this, wxBottom, 2*LAYOUT_Y_MARGIN);
94 wxSize sizeBtn = wxButton::GetDefaultSize();
95 c->width.Absolute(sizeBtn.x);
96 c->height.Absolute(sizeBtn.y);
98 m_btnAbort->SetConstraints(c);
100 m_btnPause = new wxButton (this, ID_BTN_PAUSE, wxString("Pause"));
101 wxLayoutConstraints* cPause = new wxLayoutConstraints;
102 cPause->right.SameAs(this, wxRight, 3*LAYOUT_X_MARGIN + sizeBtn.x);
103 cPause->bottom.SameAs(this, wxBottom, 2*LAYOUT_Y_MARGIN);
104 cPause->width.Absolute(sizeBtn.x);
105 cPause->height.Absolute(sizeBtn.y);
106 m_btnPause->SetConstraints(cPause);
108 m_btnStep = new wxButton (this, ID_BTN_STEP, wxString("Step"));
109 wxLayoutConstraints* cStep = new wxLayoutConstraints;
110 cStep->right.SameAs(this, wxRight, 5*LAYOUT_X_MARGIN + sizeBtn.x * 2);
111 cStep->bottom.SameAs(this, wxBottom, 2*LAYOUT_Y_MARGIN);
112 cStep->width.Absolute(sizeBtn.x);
113 cStep->height.Absolute(sizeBtn.y);
114 m_btnStep->SetConstraints(cStep);
121 wxSize sizeDlg (m_nxGraph, m_nyGraph);
122 m_nxImage = m_rImageFile.nx();
123 if (m_nxImage > MAX_IMAGE_X)
124 m_nxImage = MAX_IMAGE_X;
125 m_nyImage = m_rImageFile.ny();
126 if (m_nyImage > MAX_IMAGE_Y)
127 m_nyImage = MAX_IMAGE_Y;
129 sizeDlg.x += m_nxImage;
130 sizeDlg.y = max (sizeDlg.y, m_nyImage);
132 m_iClientX = sizeDlg.x;
133 m_iClientY = sizeDlg.y;
134 SetClientSize (sizeDlg);
136 Centre(wxCENTER_FRAME | wxBOTH);
139 m_parentTop->Enable(FALSE);
142 Enable(TRUE); // enable this window
144 m_bitmap.Create (m_iClientX, m_iClientY); // save a copy of screen
145 m_pDC = dynamic_cast<wxDC*> (new wxClientDC (this));
147 this->GetClientSize(&x, &y);
148 m_pSGPDriver = new SGPDriver (m_pDC, x, y);
149 m_pSGP = new SGP (*m_pSGPDriver);
151 wxYield(); // Update the display
153 m_pSGPDriver->idWX()->SetFont(*wxSWISS_FONT);
157 ReconstructDialog::showView (int iViewNumber, bool bBackprojectView)
159 if ( iViewNumber < m_rProjections.nView() ) {
160 m_iLastView = iViewNumber;
161 ::wxYield(); // update the display
162 m_pSGP->eraseWindow();
163 m_btnPause->Refresh();
164 m_btnStep->Refresh();
165 m_btnAbort->Refresh();
167 char szProgress [256];
168 snprintf (szProgress, sizeof(szProgress), "Reconstructing View %d (%.1f%%)", iViewNumber, 100 * iViewNumber / static_cast<double>(m_rProjections.nView()));
169 m_pSGP->setViewport (0, 0, 1, 1);
170 m_pSGP->setWindow (0, 0, 1, 1);
171 m_pSGP->setTextColor (C_LTRED, -1);
172 double dCharHeight = m_pSGP->getCharHeight();
173 m_pSGP->setTextSize (dCharHeight * 2);
174 m_pSGP->moveAbs(0., m_pSGP->getCharHeight());
175 m_pSGP->drawText (szProgress);
176 m_pSGP->setTextSize (dCharHeight);
178 int iXDialog, iYDialog;
179 GetClientSize (&iXDialog, &iYDialog);
180 double dGraphWidth = (iXDialog - m_nxImage) / static_cast<double>(iXDialog);
182 m_rReconstructor.reconstructView (iViewNumber, 1, m_pSGP, bBackprojectView, dGraphWidth);
184 ImageFileArrayConst v = m_rImageFile.getArray();
185 int xBase = m_nxGraph;
187 if (m_nyGraph > m_nyImage)
188 yBase = (m_nyGraph - m_nyImage) / 2;
189 double minValue = v[0][0];
190 double maxValue = v[0][0];
191 for (int ix = 0; ix < m_nxImage; ix++) {
192 for (int iy = 0; iy < m_nyImage; iy++) {
193 double dPixel = v[ix][iy];
194 if (dPixel < minValue)
196 else if (dPixel > maxValue)
200 unsigned char* imageData = new unsigned char [m_nxImage * m_nyImage * 3];
201 double dScale = 255 / (maxValue - minValue);
202 for (int ix2 = 0; ix2 < m_nxImage; ix2++) {
203 for (int iy = 0; iy < m_nyImage; iy++) {
204 double dPixel = v[ix2][iy];
205 dPixel = (dPixel - minValue) * dScale;
206 int intensity = nearest<int>(dPixel);
207 intensity = clamp (intensity, 0, 255);
208 int baseAddr = ((m_nyImage - 1 - iy) * m_nxImage + ix2) * 3;
209 imageData[baseAddr] = imageData[baseAddr+1] = imageData[baseAddr+2] = intensity;
212 wxImage image (m_nxImage, m_nyImage, imageData, true);
213 wxBitmap bitmap = image.ConvertToBitmap();
214 m_pSGP->getDriver().idWX()->DrawBitmap(bitmap, xBase, yBase, false);
220 ReconstructDialog::reconstructView (int iViewNumber, bool bBackproject)
222 if (iViewNumber <= m_iLastView) // have already done this view
225 if (iViewNumber < m_rProjections.nView()) {
226 ::wxYield(); // update the display
227 showView (iViewNumber, bBackproject);
228 ::wxYield(); // update the display
229 if (m_iTrace >= Trace::TRACE_PLOT) {
233 m_state = Finished; // so that we return TRUE below and
234 } // that [Cancel] handler knew what to do
236 ::wxYield(); // update the display
237 return m_state != Cancelled;
243 void ReconstructDialog::OnCancel (wxCommandEvent& event)
245 if ( m_state == Finished ) {
246 // this means that the count down is already finished and we're being
247 // shown as a modal dialog - so just let the default handler do the job
250 // request to cancel was received, the next time Update() is called we
254 // update the button state immediately so that the user knows that the
255 // request has been noticed
256 m_btnAbort->Disable();
262 ReconstructDialog::OnPause (wxCommandEvent& event)
264 if ( m_state == Finished ) {
265 // this means that the count down is already finished and we're being
266 // shown as a modal dialog - so just let the default handler do the job
268 } else if (m_state == Continue) {
269 m_memoryDC.SelectObject (m_bitmap); // in memoryDC
270 m_pSGP->setDC (&m_memoryDC);
271 m_memoryDC.SetFont (*wxSWISS_FONT);
272 showView (m_iLastView, false);
274 m_btnPause->SetLabel (wxString("Resume"));
275 m_pSGP->setDC (m_pDC);
276 m_memoryDC.SelectObject(wxNullBitmap);
277 } else if (m_state == Paused) {
279 m_btnPause->SetLabel (wxString("Pause"));
285 ReconstructDialog::OnStep (wxCommandEvent& event)
287 if ( m_state == Finished ) {
289 } else if (m_state == Continue) {
290 m_memoryDC.SelectObject (m_bitmap); // in memoryDC
291 m_pSGP->setDC (&m_memoryDC);
292 m_memoryDC.SetFont (*wxSWISS_FONT);
293 showView (m_iLastView, false);
295 m_btnPause->SetLabel (wxString("Resume"));
296 m_pSGP->setDC (m_pDC);
297 m_memoryDC.SelectObject(wxNullBitmap);
299 } else if (m_state == Paused) {
300 m_memoryDC.SelectObject (m_bitmap); // in memoryDC
301 m_pSGP->setDC (&m_memoryDC);
302 m_memoryDC.SetFont (*wxSWISS_FONT);
303 reconstructView (m_iLastView + 1);
304 m_pSGP->setDC (m_pDC);
305 m_memoryDC.SelectObject(wxNullBitmap);
310 void ReconstructDialog::OnClose(wxCloseEvent& event)
312 if ( m_state == Uncancellable )
313 event.Veto(TRUE); // can't close this dialog
314 else if ( m_state == Finished )
315 event.Skip(); // let the default handler close the window as we already terminated
317 m_state = Cancelled; // next Update() will notice it
321 ReconstructDialog::OnPaint (wxPaintEvent& event)
323 wxPaintDC paintDC (this);
324 if (m_state == Paused) {
325 paintDC.DrawBitmap (m_bitmap, 0, 0, false);
330 /////////////////////////////////////////////////////
333 ReconstructDialog::~ReconstructDialog()
336 m_parentTop->Enable(TRUE);