+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::DrawGradients(wxDC& dc)
+{
+ // LHS: linear
+ wxRect r(10, 10, 100, 100);
+ dc.GradientFillLinear(r, *wxWHITE, *wxBLUE, wxRIGHT);
+
+ r.Offset(0, 110);
+ dc.GradientFillLinear(r, *wxWHITE, *wxBLUE, wxLEFT);
+
+ r.Offset(0, 110);
+ dc.GradientFillLinear(r, *wxWHITE, *wxBLUE, wxDOWN);
+
+ r.Offset(0, 110);
+ dc.GradientFillLinear(r, *wxWHITE, *wxBLUE, wxUP);
+
+
+ // RHS: concentric
+ r = wxRect(200, 10, 100, 100);
+ dc.GradientFillConcentric(r, *wxBLUE, *wxWHITE);
+
+ r.Offset(0, 110);
+ dc.GradientFillConcentric(r, *wxWHITE, *wxBLUE);
+
+ r.Offset(0, 110);
+ dc.GradientFillConcentric(r, *wxBLUE, *wxWHITE, wxPoint(0, 0));
+
+ r.Offset(0, 110);
+ dc.GradientFillConcentric(r, *wxBLUE, *wxWHITE, wxPoint(100, 100));
+}
+
projects / wxWidgets.git / blobdiff