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* rcurv - curvature radius of slats (up:>0;down:<0;flat:=0) |
16 |
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*/ |
17 |
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|
18 |
< |
#include <stdio.h> |
19 |
< |
#include <stdlib.h> |
18 |
> |
#include "rtio.h" |
19 |
> |
#include <stdlib.h> |
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#include <math.h> |
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– |
#include <string.h> |
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|
22 |
+ |
#ifndef PI |
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#define PI 3.14159265358979323846 |
24 |
< |
#define DELTA 10. /* MINIMAL SUSTAINED ANGLE IN DEGREES */ |
24 |
> |
#endif |
25 |
> |
#define DELTA 3. /* MINIMAL SUSTAINED ANGLE IN DEGREES */ |
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|
27 |
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double baseflat[4][3], baseblind[4][3][180]; |
28 |
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double A[3],X[3]; |
33 |
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|
34 |
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static void makeflat(double w, double d, double a); |
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static void printslat(int n); |
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– |
static void printhead(register int ac, register char **av); |
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|
37 |
– |
|
37 |
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void |
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makeflat( |
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double w, |
66 |
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int n |
67 |
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) |
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{ |
69 |
< |
register int i, k; |
69 |
> |
int i, k; |
70 |
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|
71 |
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for (k=0; k < nsurf; k++) { |
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printf("\n%s polygon %s.%d.%d\n", material, name, n, k); |
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} |
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|
82 |
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|
84 |
– |
void |
85 |
– |
printhead( /* print command header */ |
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– |
register int ac, |
87 |
– |
register char **av |
88 |
– |
) |
89 |
– |
{ |
90 |
– |
putchar('#'); |
91 |
– |
while (ac--) { |
92 |
– |
putchar(' '); |
93 |
– |
fputs(*av++, stdout); |
94 |
– |
} |
95 |
– |
putchar('\n'); |
96 |
– |
} |
97 |
– |
|
98 |
– |
|
83 |
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int |
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main( |
85 |
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int argc, |
86 |
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char *argv[] |
87 |
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) |
88 |
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{ |
89 |
< |
double width, delem, depth, rcurv = 0.0, angle; |
89 |
> |
double width, delem, depth, rcurv = 0.0, mydelta, angle; |
90 |
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double beta, gamma, theta, chi = 0; |
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int i, j, k, l; |
92 |
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|
100 |
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height = atof(argv[5]); |
101 |
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nslats = atoi(argv[6]); |
102 |
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angle = atof(argv[7]); |
103 |
< |
if (argc == 10) |
103 |
> |
if (argc == 10) { |
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if (!strcmp(argv[8], "-r")) |
105 |
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rcurv = atof(argv[9]); |
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else if (!strcmp(argv[8], "+r")) |
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rcurv = -atof(argv[9]); |
108 |
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else |
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goto userr; |
110 |
< |
|
110 |
> |
} |
111 |
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/* CURVED BLIND CALCULATION */ |
112 |
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|
113 |
< |
if (rcurv != 0) { |
113 |
> |
if (rcurv != 0.) { |
114 |
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|
115 |
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/* BLINDS SUSTAINED ANGLE */ |
116 |
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|
117 |
< |
theta = 2*asin(depth/(2*fabs(rcurv))); |
117 |
> |
theta = 2.*asin(depth/(2.*fabs(rcurv))); |
118 |
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|
119 |
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/* HOW MANY ELEMENTARY SURFACES SHOULD BE CALCULATED ? */ |
120 |
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|
121 |
< |
nsurf = (int)(theta / ((PI/180.)*DELTA)) + 1; |
121 |
> |
nsurf = (int)(theta / ((PI/180.)*DELTA) + 0.99999); |
122 |
> |
|
123 |
> |
mydelta = (180./PI) * theta / nsurf; |
124 |
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|
125 |
|
/* WHAT IS THE DEPTH OF THE ELEMENTARY SURFACES ? */ |
126 |
|
|
127 |
< |
delem = 2*fabs(rcurv)*sin((PI/180.)*(DELTA/2.)); |
127 |
> |
delem = 2.*fabs(rcurv)*sin((PI/180.)*(mydelta/2.)); |
128 |
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|
129 |
|
beta = (PI-theta)/2.; |
130 |
|
gamma = beta -((PI/180.)*angle); |
133 |
|
|
134 |
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if (rcurv < 0) { |
135 |
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A[0]=fabs(rcurv)*cos(gamma); |
136 |
< |
A[0] *= -1; |
136 |
> |
A[0] *= -1.; |
137 |
|
A[1]=0.; |
138 |
|
A[2]=fabs(rcurv)*sin(gamma); |
139 |
|
} |
141 |
|
A[0]=fabs(rcurv)*cos(gamma+theta); |
142 |
|
A[1]=0.; |
143 |
|
A[2]=fabs(rcurv)*sin(gamma+theta); |
144 |
< |
A[2] *= -1; |
144 |
> |
A[2] *= -1.; |
145 |
|
} |
146 |
|
|
147 |
|
for (k=0; k < nsurf; k++) { |
148 |
|
if (rcurv < 0) { |
149 |
< |
chi=(PI/180.)*((180.-DELTA)/2.) - (gamma+(k*(PI/180.)*DELTA)); |
149 |
> |
chi=(PI/180.)*((180.-mydelta)/2.) - (gamma+(k*(PI/180.)*mydelta)); |
150 |
|
} |
151 |
|
if (rcurv > 0) { |
152 |
< |
chi=(PI-(gamma+theta)+(k*(PI/180.)*DELTA))-(PI/180.)* |
153 |
< |
((180.-DELTA)/2.); |
152 |
> |
chi=(PI-(gamma+theta)+(k*(PI/180.)*mydelta))-(PI/180.)* |
153 |
> |
((180.-mydelta)/2.); |
154 |
|
} |
155 |
|
makeflat(width, delem, chi); |
156 |
|
if (rcurv < 0.) { |
157 |
< |
X[0]=(-fabs(rcurv))*cos(gamma+(k*(PI/180.)*DELTA))-A[0]; |
157 |
> |
X[0]=(-fabs(rcurv))*cos(gamma+(k*(PI/180.)*mydelta))-A[0]; |
158 |
|
X[1]=0.; |
159 |
< |
X[2]=fabs(rcurv)*sin(gamma+(k*(PI/180.)*DELTA))-A[2]; |
159 |
> |
X[2]=fabs(rcurv)*sin(gamma+(k*(PI/180.)*mydelta))-A[2]; |
160 |
|
} |
161 |
|
if (rcurv > 0.) { |
162 |
< |
X[0]=fabs(rcurv)*cos(gamma+theta-(k*(PI/180.)*DELTA))-A[0]; |
162 |
> |
X[0]=fabs(rcurv)*cos(gamma+theta-(k*(PI/180.)*mydelta))-A[0]; |
163 |
|
X[1]=0.; |
164 |
< |
X[2]=(-fabs(rcurv))*sin(gamma+theta-(k*(PI/180.)*DELTA))-A[2]; |
164 |
> |
X[2]=(-fabs(rcurv))*sin(gamma+theta-(k*(PI/180.)*mydelta))-A[2]; |
165 |
|
} |
166 |
|
|
167 |
|
for (i=0; i < 4; i++) { |
174 |
|
|
175 |
|
/* FLAT BLINDS CALCULATION */ |
176 |
|
|
177 |
< |
if (rcurv == 0.) { |
177 |
> |
else { |
178 |
|
|
179 |
|
nsurf=1; |
180 |
|
makeflat(width,depth,angle*(PI/180.)); |
185 |
|
} |
186 |
|
} |
187 |
|
|
188 |
< |
printhead(argc, argv); |
189 |
< |
|
188 |
> |
fputs("# ", stdout); |
189 |
> |
printargs(argc, argv, stdout); |
190 |
> |
|
191 |
|
|
192 |
|
/* REPEAT THE BASIC CURVED OR FLAT SLAT TO GET THE OVERALL BLIND */ |
193 |
|
|