File:Demipenteract graph ortho.svg
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Original file (SVG file, nominally 800 × 800 pixels, file size: 805 bytes)
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Summary
DescriptionDemipenteract graph ortho.svg |
English: Othographic projection of Demipenteract (edge gragh) |
Date | |
Source | Own work |
Author | Claudio Rocchini |
Source Code
static int nbit( int x ) {
int n = 0;
while(x) { if(x&1) ++n; x >>= 1; }
return n;
}
void main() {
const int D = 5; const int NV = 16; const int NE = 80;
double v[NV][D]; int e[NE][2];
double px[NV]; double py[NV];
// Magic numbers
const double x1 = -.1464466094; const double y1 = .3535533906;
const double x2 = -.1464466094; const double y2 = -.3535533906;
const double x3 = -.3535533906; const double y3 = .1464466094;
const double y4 = -.1464466094; const double x4 = -.3535533906;
const double x5 = 0; const double y5 = 0;
const double PX[D] = {x1,x2,x3,x4,x5};
const double PY[D] = {y1,y2,y3,y4,y5};
int i,j,k,l;
for(k=0,i=0;i<(1<<D);++i) if(nbit(i)%2==0){
for(j=0;j<D;++j) v[k][j] = (i>>j)&1 ? 1.0 : -1.0;
++k;
}
assert(k==NV);
for(k=0,i=0;i<NV-1;++i) for(j=i+1;j<NV;++j) {
double d = 0;
for(l=0;l<D;++l) { double t = v[i][l]-v[j][l]; d += t*t; }
if(d==8) { e[k][0]=i; e[k][1]=j; ++k; }
}
for(i=0;i<NV;++i){
px[i] = 0; for(l=0;l<D;++l) px[i] += v[i][l]*PX[l];
py[i] = 0; for(l=0;l<D;++l) py[i] += v[i][l]*PY[l];
}
const double SX = 800; const double SY = 800;
const double B = 64; const double R = 12;
const double sca = std::min((SX-2*B)/2,(SY-2*B)/2);
for(i=0;i<NV;++i) { px[i] = B+(px[i]+1)*sca; py[i] = B+(py[i]+1)*sca; }
FILE * fp = fopen("c:\\temp\\Demipenteract_Graph2.svg","w");
fprintf(fp,
"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n"
"<svg\n"
"xmlns:svg=\"http://www.w3.org/2000/svg\"\n"
"xmlns=\"http://www.w3.org/2000/svg\"\n"
"version=\"1.0\"\n"
"width=\"%g\"\n" "height=\"%g\"\n"
"id=\"Demipenteract_Graph2\">\n"
,SX,SY
);
fprintf(fp,"<g style=\"stroke:#000000;stroke-width:3;stroke-opacity:1.0;\">\n");
for(i=0;i<NE;++i)
fprintf(fp,
"<line x1=\"%5.1lf\" y1=\"%5.1lf\" x2=\"%5.1lf\" y2=\"%5.1lf\"/>\n"
,px[e[i][0]],py[e[i][0]], px[e[i][1]],py[e[i][1]]
);
fprintf(fp,"</g>\n");
fprintf(fp,"<g style=\"stroke:#000000;stroke-width:2;fill:#0000E0\">\n");
for(i=0;i<NV;++i)
fprintf(fp,"<circle cx=\"%5.1lf\" cy=\"%5.1lf\" r=\"%5.1lf\"/>\n",px[i],py[i],R);
fprintf(fp,"</g>\n");
fprintf(fp,"</svg>\n");
fclose(fp);
}
Licensing
I, the copyright holder of this work, hereby publish it under the following licenses:
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
This file is licensed under the Creative Commons Attribution 3.0 Unported license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
You may select the license of your choice.
Items portrayed in this file
depicts
some value
28 July 2008
image/svg+xml
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 04:17, 11 October 2021 | 800 × 800 (805 bytes) | wikimediacommons>Andreasl01 | Simplified code |
File usage
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