From b11729f1496ef0bba192a00af430eb46a581e97d Mon Sep 17 00:00:00 2001 From: =?utf8?q?W=C5=82odzimierz=20Skiba?= Date: Thu, 15 Sep 2005 15:18:37 +0000 Subject: [PATCH] Splines sample. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@35513 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775 --- samples/drawing/drawing.cpp | 109 +++++++++++++++++++++++++++++++++--- 1 file changed, 102 insertions(+), 7 deletions(-) diff --git a/samples/drawing/drawing.cpp b/samples/drawing/drawing.cpp index b462b1370d..31f673167b 100644 --- a/samples/drawing/drawing.cpp +++ b/samples/drawing/drawing.cpp @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: drawing.cpp +// Name: samples/drawing/drawing.cpp // Purpose: shows and tests wxDC features // Author: Robert Roebling // Modified by: @@ -64,7 +64,8 @@ enum ScreenToShow Show_Mask, Show_Ops, Show_Regions, - Show_Circles + Show_Circles, + Show_Splines }; // ---------------------------------------------------------------------------- @@ -166,6 +167,7 @@ protected: void DrawWithLogicalOps(wxDC& dc); void DrawRegions(wxDC& dc); void DrawCircles(wxDC& dc); + void DrawSplines(wxDC& dc); void DrawDefault(wxDC& dc); void DrawRegionsHelper(wxDC& dc, wxCoord x, bool firstTime); @@ -189,10 +191,10 @@ private: enum { // menu items - File_Quit = 1, - File_About, + File_Quit = wxID_EXIT, + File_About = wxID_ABOUT, - MenuShow_First, + MenuShow_First = wxID_HIGHEST, File_ShowDefault = MenuShow_First, File_ShowText, File_ShowLines, @@ -202,7 +204,8 @@ enum File_ShowOps, File_ShowRegions, File_ShowCircles, - MenuShow_Last = File_ShowCircles, + File_ShowSplines, + MenuShow_Last = File_ShowSplines, File_Clip, @@ -885,6 +888,94 @@ void MyCanvas::DrawCircles(wxDC& dc) dc.DrawEllipticArc(x + 5*r, y, 2*r, r, 270, 360); } +void MyCanvas::DrawSplines(wxDC& dc) +{ +#if wxUSE_SPLINES + dc.DrawText(_T("Some splines"), 10, 5); + + // values are hardcoded rather than randomly generated + // so the output can be compared between native + // implementations on platforms with different random + // generators + + const int R = 300; + const wxPoint center( R + 20, R + 20 ); + const int angles[7] = { 0, 10, 33, 77, 13, 145, 90 }; + const int radii[5] = { 100 , 59, 85, 33, 90 }; + const int n = 200; + wxPoint pts[n]; + + // background spline calculation + unsigned int radius_pos = 0; + unsigned int angle_pos = 0; + int angle = 0; + for ( int i = 0; i < n; i++ ) + { + angle += angles[ angle_pos ]; + int r = R * radii[ radius_pos ] / 100; + pts[ i ].x = center.x + (wxCoord)( r * cos( M_PI * angle / 180.0) ); + pts[ i ].y = center.y + (wxCoord)( r * sin( M_PI * angle / 180.0) ); + + angle_pos++; + if ( angle_pos >= WXSIZEOF(angles) ) angle_pos = 0; + + radius_pos++; + if ( radius_pos >= WXSIZEOF(radii) ) radius_pos = 0; + } + + // background spline drawing + dc.SetPen(*wxRED_PEN); + dc.DrawSpline(WXSIZEOF(pts), pts); + + // less detailed spline calculation + wxPoint letters[4][5]; + // w + letters[0][0] = wxPoint( 0,1); // O O + letters[0][1] = wxPoint( 1,3); // * * + letters[0][2] = wxPoint( 2,2); // * O * + letters[0][3] = wxPoint( 3,3); // * * * * + letters[0][4] = wxPoint( 4,1); // O O + // x1 + letters[1][0] = wxPoint( 5,1); // O*O + letters[1][1] = wxPoint( 6,1); // * + letters[1][2] = wxPoint( 7,2); // O + letters[1][3] = wxPoint( 8,3); // * + letters[1][4] = wxPoint( 9,3); // O*O + // x2 + letters[2][0] = wxPoint( 5,3); // O*O + letters[2][1] = wxPoint( 6,3); // * + letters[2][2] = wxPoint( 7,2); // O + letters[2][3] = wxPoint( 8,1); // * + letters[2][4] = wxPoint( 9,1); // O*O + // W + letters[3][0] = wxPoint(10,0); // O O + letters[3][1] = wxPoint(11,3); // * * + letters[3][2] = wxPoint(12,1); // * O * + letters[3][3] = wxPoint(13,3); // * * * * + letters[3][4] = wxPoint(14,0); // O O + + const int dx = 2 * R / letters[3][4].x; + const int h[4] = { -R/2, 0, R/4, R/2 }; + + for ( int m = 0; m < 4; m++ ) + { + for ( int n = 0; n < 5; n++ ) + { + letters[m][n].x = center.x - R + letters[m][n].x * dx; + letters[m][n].y = center.y + h[ letters[m][n].y ]; + } + + dc.SetPen( wxPen( wxT("blue"), 1, wxDOT) ); + dc.DrawLines(5, letters[m]); + dc.SetPen( wxPen( wxT("black"), 4, wxSOLID) ); + dc.DrawSpline(5, letters[m]); + } + +#else + dc.DrawText(_T("Splines not supported."), 10, 5); +#endif +} + void MyCanvas::DrawRegions(wxDC& dc) { dc.DrawText(_T("You should see a red rect partly covered by a cyan one ") @@ -985,6 +1076,10 @@ void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event)) DrawCircles(dc); break; + case Show_Splines: + DrawSplines(dc); + break; + case Show_Regions: DrawRegions(dc); break; @@ -1071,6 +1166,7 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) menuFile->Append(File_ShowOps, _T("&ROP screen\tF7")); menuFile->Append(File_ShowRegions, _T("Re&gions screen\tF8")); menuFile->Append(File_ShowCircles, _T("&Circles screen\tF9")); + menuFile->Append(File_ShowSplines, _T("&Splines screen")); menuFile->AppendSeparator(); menuFile->AppendCheckItem(File_Clip, _T("&Clip\tCtrl-C"), _T("Clip/unclip drawing")); menuFile->AppendSeparator(); @@ -1301,4 +1397,3 @@ wxColour MyFrame::SelectColour() return col; } #endif // wxUSE_COLOURDLG - -- 2.45.2