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[10][这个贴子最后由Jobyan在 2003/04/16 01:31pm 第 1 次编辑]
此程式用于显示三阶衍射面的位相曲线,编译链结后在指令行KEY入 DFPL N(N为衍射面别)
cmd dfpl(int sfn)
{
float pi = 2*acos(0);
float r = ap[sfn];
float ri,w = wv[1];
float pash, pash0 = 0, de1 , de2 , de3;
real size;
graphwin_open(1);
for (size = .01; size .5; size += 0.01)
{
/* Clear the window, draw the frame and refresh
* the display:
*/
GCLEAR;
pen 5;
viewport(.5-size, .5+size, .5-size, .5+size);
frame;
gshow;
/* Let the frame remain visible for 1/10 second: */
time_reset;
while (time 1) ;
}
pen 4;
gmv .5 .96;
lor 5;
lsz 2;
label Diff Sur Pash Plot--yzt;
gmv 0 0.5;
glt 1 0.5;
stp outp off;
sbr;
spe sfn;
de1 = b4 , de2 = c4 , de3 = d4;
for (i = 0; i1001; i++)
{
ri = i*r/1000;
pash = fabs((2000*pi*(de1*ri**2 + de2*ri**4 + de3*ri**6)/w));
if (pash0pash) pash0 = pash;
}
gmv 0 0.5;
pen 3;
for (i = 0; i1001; i++)
{
ri = i*r/1000;
pash = (2000*pi*(de1*ri**2 + de2*ri**4 + de3*ri**6)/w);
glt ri/r 0.5+pash/pash0/2;
}
stp outp on;
}
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