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11.27 Sample ‘contd’ ¶

Function contd is similar to contf but with manual contour colors.

MGL code:

call 'prepare2d'
list v -0.5 -0.15 0 0.15 0.5
new a1 30 40 3 '0.6*sin(2*pi*x+pi*(z+1)/2)*sin(3*pi*y+pi*z) + 0.4*cos(3*pi*(x*y)+pi*(z+1)^2/2)'
subplot 2 2 0:title 'ContD plot (default)':rotate 50 60:box:contd a
subplot 2 2 1:title 'manual levels':rotate 50 60:box:contd v a
subplot 2 2 2:title '"\_" style':rotate 50 60:box:contd a '_'
subplot 2 2 3:title 'several slices':rotate 50 60:box:contd a1

C++ code:

void smgl_contd(mglGraph *gr)
{
	mglData a,v(5),a1(30,40,3);	mgls_prepare2d(&a);	v.a[0]=-0.5;
	v.a[1]=-0.15;	v.a[2]=0;	v.a[3]=0.15;	v.a[4]=0.5;
	gr->Fill(a1,"0.6*sin(2*pi*x+pi*(z+1)/2)*sin(3*pi*y+pi*z) + 0.4*cos(3*pi*(x*y)+pi*(z+1)^2/2)");

	if(big!=3)	{	gr->SubPlot(2,2,0);	gr->Title("ContD plot (default)");	}
	gr->Rotate(50,60);	gr->Box();	gr->ContD(a);
	if(big==3)	return;
	gr->SubPlot(2,2,1);	gr->Title("manual levels");
	gr->Rotate(50,60);	gr->Box();	gr->ContD(v,a);
	gr->SubPlot(2,2,2);	gr->Title("'\\_' style");
	gr->Rotate(50,60);	gr->Box();	gr->ContD(a,"_");
	gr->SubPlot(2,2,3);	gr->Title("several slices");
	gr->Rotate(50,60);	gr->Box();	gr->ContD(a1);
}