Përmbledhje

PërshkrimiGreatStellatedDodecahedron.jpg	English: Great stellated dodecahedron, rendered with POVRay   This image was created with POV-Ray.
Burimi	Punë e juaja
Autori	User Cyp

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Licencim

Unë, krijuesi i kësaj pune, e publikoj këtu në bazë të licensës në vijim:

Ju jepet leje për ta kopjuar, shpërndarë dhe/ose ndryshuar këtë dokument sipas kushteve të Licencës GNU për Dokumentim të Lirë, versioni 1.2 ose çfarëdo versioni të mëpasshëm të botuar nga Free Software Foundation; pa Seksione të Pandryshueshme, pa Tekste Kapakësh të Përparmë, dhe pa Tekste Kapakësh të Pasmë. Një kopje e kësaj licence është përfshirë në seksionin e titulluar GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue

	Kjo skedë licencohet sipas Creative Commons Attribution-Share Alike 3.0 Unported.
	Je i lirë të: ta shpërndani – ta kopjoni, rishpërndani dhe përcillni punën t’i bëni “remix” – të përshtatni punën Sipas kushteve të mëposhtme: atribuim – Duhet t’i jepni meritat e duhura, të siguroni një lidhje për tek licenca dhe të tregoni nëse janë bërë ndryshime. Këtë mund ta bëni në ndonjë mënyrë të arsyeshme, por jo në ndonjë mënyrë që sugjeron se licencuesi ju del zot juve apo përdorimit tuaj. share alike – Nëse bëni një “remix”, e shndërroni, ose ndërtoni duke u bazuar te materiali, duhet t’i shpërndani kontributet tuaja sipas të njëjtës licencë ose një të tille të përputhshme me origjinalen.
	Kjo etiketë licencimi u shtua te kjo skedë si pjesë e përditësimit të lincecimit. GFDL.http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue

Kjo skedë është dhënë për përdorim sipas licensës Creative Commons Attribution-Share Alike 2.5 Generic, 2.0 Generic dhe 1.0 Generic.

Je i lirë të:

• ta shpërndani – ta kopjoni, rishpërndani dhe përcillni punën
• t’i bëni “remix” – të përshtatni punën

Sipas kushteve të mëposhtme:

• atribuim – Duhet t’i jepni meritat e duhura, të siguroni një lidhje për tek licenca dhe të tregoni nëse janë bërë ndryshime. Këtë mund ta bëni në ndonjë mënyrë të arsyeshme, por jo në ndonjë mënyrë që sugjeron se licencuesi ju del zot juve apo përdorimit tuaj.
• share alike – Nëse bëni një “remix”, e shndërroni, ose ndërtoni duke u bazuar te materiali, duhet t’i shpërndani kontributet tuaja sipas të njëjtës licencë ose një të tille të përputhshme me origjinalen.

https://creativecommons.org/licenses/by-sa/2.5CC BY-SA 2.5 Creative Commons Attribution-Share Alike 2.5 truetrue

Mundeni të përzgjidhni licencën që doni.

Source

//GPL
#include <stdio.h>
#include <math.h>

#include <vector>

using std::vector;

const char *theader = "//Picture   ***  Use flashiness=1 !!! ***\n//\n//   +w1024 +h1024 +a0.3 +am2\n//   +w512 +h512 +a0.3 +am2\n//\n//Movie   ***  Use flashiness=0.25 !!! ***\n//\n//   +kc +kff120 +w256 +h256 +a0.3 +am2\n//   +kc +kff60 +w256 +h256 +a0.3 +am2\n//\"Fast\" preview\n//   +w128 +h128\n#declare notwireframe=1;\n#declare withreflection=0;\n#declare flashiness=1; //Still pictures use 1, animated should probably be about 0.25.\n\n#declare rotation=seed(%d);\n\n#declare rot1=rand(rotation)*pi*2;\n#declare rot2=acos(1-2*rand(rotation));\n#declare rot3=(rand(rotation)+clock)*pi*2;\n#macro dorot()\n  rotate rot1*180/pi*y\n  rotate rot2*180/pi*x\n  rotate rot3*180/pi*y\n#end\n\n";

const char *tline = "object {\n  cylinder { <%lf,%lf,%lf>, <%lf,%lf,%lf>, .01 dorot() }\n  pigment { colour <.3,.3,.3> }\n  finish { ambient 0 diffuse 1 phong 1 }\n}\n\n";

const char *tvertex = "object {\n  sphere { <%lf,%lf,%lf>, .01 dorot() }\n  pigment { colour <.3,.3,.3> }\n  finish { ambient 0 diffuse 1 phong 1 }\n}\n\n";

const char *tstartmesh = "object {\n  mesh {\n";

const char *ttriangle = "    triangle {\n      <%lf,%lf,%lf>, <%lf,%lf,%lf>, <%lf,%lf,%lf>\n    }\n";

const char *tendmesh = "    //sphere { <0,0,0>, 1 }\n    //sphere { <0,0,0>, ld+.01 inverse }\n    dorot()\n  }\n  pigment { colour rgbt <.8,.8,.8,.4> }\n  finish { ambient 0 diffuse 1 phong flashiness #if(withreflection) reflection { .2 } #end }\n  //interior { ior 1.5 }\n  photons {\n    target on\n    refraction on\n    reflection on\n    collect on\n  }\n}\n\n";

const char *tfooter = "//  CCC Y Y PP\n//  C   Y Y P P\n//  C    Y  PP\n//  C    Y  P\n//  CCC  Y  P\n\n#local a=0;\n#while(a<11.0001)\n  light_source { <4*sin(a*pi*2/11), 5*cos(a*pi*6/11), -4*cos(a*pi*2/11)> colour (1+<sin(a*pi*2/11),sin(a*pi*2/11+pi*2/3),sin(a*pi*2/11+pi*4/3)>)*2/11 }\n  #local a=a+1;\n#end\n\nbackground { color <1,1,1> }\n\ncamera {\n  perspective\n  location <0,0,0>\n  direction <0,0,1>\n  right x/2\n  up y/2\n  sky <0,1,0>\n  location <0,0,-4.8>\n  look_at <0,0,0>\n}\n\nglobal_settings {\n  max_trace_level 40\n  photons {\n    count 200000\n    autostop 0\n  }\n}\n";

#define PHI ((1+sqrt(5))/2)
#define PI (3.14159265358979323846264338327)
#define SQ2 (sqrt(2))
#define SQ3 (sqrt(3))

bool eq(double a, double b)
{
    return a+0.00001>=b&&b+0.00001>=a;
}

bool eqt(double a1, double a2, double a3, double b1, double b2, double b3)
{
//printf("Tri: {%lf, %lf, %lf}, {%lf, %lf, %lf}\n", a1, a2, a3, b1, b2, b3);
    return eq(a1, b1)? eq(a2, b2)? eq(a3, b3):eq(a2, b3)&&eq(a3, b2):eq(a1, b2)? eq(a2, b3)? eq(a3, b1):eq(a2, b1)&&eq(a3, b3):eq(a1, b3)&&(eq(a2, b1)? eq(a3, b2):eq(a2, b3)&&eq(a3, b2));
}

class vec
{
public:
    double x, y, z;
    vec() : x(0), y(0), z(0) {}
    vec(double nx, double ny, double nz) : x(nx), y(ny), z(nz) {}
    vec operator + (vec o)
    {
        return vec(x+o.x, y+o.y, z+o.z);
    }
    vec operator - (vec o)
    {
        return vec(x-o.x, y-o.y, z-o.z);
    }
    double operator * (vec o)
    {
        return x*o.x+y*o.y+z*o.z;
    }
    vec operator * (double o)
    {
        return vec(x*o, y*o, z*o);
    }
    vec operator ^ (vec o)
    {
        return vec(y*o.z-z*o.y, z*o.x-x*o.z, x*o.y-y*o.x);
    }
    double norm()
    {
        return sqrt(x*x+y*y+z*z);
    }
};

class vec2
{
public:
    double x, y;
    vec2() {}
    vec2(double nx, double ny) : x(nx), y(ny) {}
    vec2 operator + (vec2 o)
    {
        return vec2(x+o.x, y+o.y);
    }
    vec2 operator - (vec2 o)
    {
        return vec2(x-o.x, y-o.y);
    }
    double operator * (vec2 o)
    {
        return x*o.x+y*o.y;
    }
    vec2 operator * (double o)
    {
        return vec2(x*o, y*o);
    }
    vec2 operator ~ ()
    {
        return vec2(y, -x);
    }
    double norm()
    {
        return sqrt(x*x+y*y);
    }
};

vector<vec> cyclicperm(vector<vec> v)
{
    vector<vec> r;
    vector<vec>::iterator i;
    for(i = v.begin(); i!=v.end(); ++i)
    {
        r.push_back(*i);
        r.push_back(vec(i->y, i->z, i->x));
        r.push_back(vec(i->z, i->x, i->y));
    }
    return r;
}

vector<vec> altperm(vector<vec> v)
{
    vector<vec> r;
    vector<vec>::iterator i;
    for(i = v.begin(); i!=v.end(); ++i)
    {
        r.push_back(*i);
        r.push_back(vec(i->x, i->z, i->y));
    }
    return r;
}

vector<vec> signperm(vector<vec> v)
{
    vector<vec> r;
    vector<vec>::iterator i;
    for( i = v.begin(); i!=v.end(); ++i )
    {
        int j;
        for(j = 0; j<8; ++j)
            if(((j&1)||i->x)&&((j&2)||i->y)&&((j&4)||i->z))
                r.push_back(vec(j&1? i->x:-i->x, j&2? i->y:-i->y, j&4? i->z:-i->z));
    }
    return r;
}

vector<vec> mvvec(double x, double y, double z)
{
    vector<vec> v;
    v.push_back(vec(x, y, z));
    return v;
}

vector<vec> mvvec(vec q)
{
    vector<vec> v;
    v.push_back(q);
    return v;
}

vector<vec> concat(const vector<vec> a, const vector<vec> b)
{
    vector<vec> r;
    r = a;
    r.insert(r.end(), b.begin(), b.end());
    return r;
}

void printvvec(FILE *f, vector<vec> v)
{
    vector<vec>::iterator i;
    for(i = v.begin(); i!=v.end(); ++i)
        fprintf(f, tvertex, i->x, i->y, i->z);
}

void printvveclines(FILE *f, vector<vec> v, double len)
{
    vector<vec>::iterator i, j;
    len *= len;
    for(i = v.begin(); i!=v.end(); ++i)
        for(j = i+1; j!=v.end(); ++j)
            if(eq((*i-*j)*(*i-*j), len))
                fprintf(f, tline, i->x, i->y, i->z, j->x, j->y, j->z);
}

void printvveclines(FILE *f, vector<vec> v)
{
    vector<vec>::iterator i;
    for(i = v.begin(); i!=v.end(); i += 2)
        fprintf(f, tline, i->x, i->y, i->z, (i+1)->x, (i+1)->y, (i+1)->z);
}

void printvvecdottedlines(FILE *f, vector<vec> v)
{
    vector<vec>::iterator i;
    int n, m;
    double s;
    for(i = v.begin(); i!=v.end(); i += 2)
//    for(i = v.begin(); i!=v.begin()+12; i += 2)
    {
        s = (*i-*(i+1)).norm();
        m = (int)(s/0.04+.5);
        s = 1./(double)m;
        for(n = 1; n<m; ++n)
        {
            vec c = *i+(*(i+1)-*i)*(s*n);
            fprintf(f, tvertex, c.x, c.y, c.z);
        }
    }
}

void printvvectriangles(FILE *f, vector<vec> v, double len1, double len2, double len3)
{
    vector<vec>::iterator i, j, k;
    len1 *= len1;
    len2 *= len2;
    len3 *= len3;
    for(i = v.begin(); i!=v.end(); ++i)
        for(j = i+1; j!=v.end(); ++j)
            for(k = j+1; k!=v.end(); ++k)
                if(eqt((*i-*j)*(*i-*j), (*j-*k)*(*j-*k), (*k-*i)*(*k-*i), len1, len2, len3))
                    fprintf(f, ttriangle, i->x, i->y, i->z, j->x, j->y, j->z, k->x, k->y, k->z);
}

void printvvectriangles(FILE *f, vector<vec> v)
{
    vector<vec>::iterator i;
    for(i = v.begin(); i!=v.end(); i += 3)
//i = v.begin();
        fprintf(f, ttriangle, i->x, i->y, i->z, (i+1)->x, (i+1)->y, (i+1)->z, (i+2)->x, (i+2)->y, (i+2)->z);
/*i += 3;
        fprintf(f, ttriangle, i->x, i->y, i->z, (i+1)->x, (i+1)->y, (i+1)->z, (i+2)->x, (i+2)->y, (i+2)->z);
i += 3;
        fprintf(f, ttriangle, i->x, i->y, i->z, (i+1)->x, (i+1)->y, (i+1)->z, (i+2)->x, (i+2)->y, (i+2)->z);
i += 3;
        fprintf(f, ttriangle, i->x, i->y, i->z, (i+1)->x, (i+1)->y, (i+1)->z, (i+2)->x, (i+2)->y, (i+2)->z);
i += 3;
        fprintf(f, ttriangle, i->x, i->y, i->z, (i+1)->x, (i+1)->y, (i+1)->z, (i+2)->x, (i+2)->y, (i+2)->z);
i += 3;
        fprintf(f, ttriangle, i->x, i->y, i->z, (i+1)->x, (i+1)->y, (i+1)->z, (i+2)->x, (i+2)->y, (i+2)->z);
*/}

void SmallStellatedDodecahedron()
{
    vector<vec> v;
    v = cyclicperm(signperm(mvvec(vec(0, PHI, 1)*(1/sqrt(PHI+2)))));

    FILE *f;
    f = fopen("SmallStellatedDodecahedron.pov", "wb");
    fprintf(f, theader, 22491);
    printvvec(f, v);
    printvveclines(f, v, 2*PHI*(1/sqrt(PHI+2)));
    fprintf(f, tstartmesh);
    v = concat(v, cyclicperm(signperm(mvvec(vec(0, 2-PHI, 1)*(1/sqrt(PHI+2))))));
    v = concat(v, signperm(mvvec(vec(PHI-1, PHI-1, PHI-1)*(1/sqrt(PHI+2)))));
    printvvectriangles(f, v, (2*PHI-2)*(1/sqrt(PHI+2)), (2*PHI-2)*(1/sqrt(PHI+2)), (4-2*PHI)*(1/sqrt(PHI+2)));
    fprintf(f, tendmesh);
    fprintf(f, tfooter);
    fclose(f);
}

void GreatStellatedDodecahedron()
{
    vector<vec> v;
    v = concat(signperm(mvvec(vec(1, 1, 1)*(1/SQ3))), cyclicperm(signperm(mvvec(vec(0, PHI, 1/PHI)*(1/SQ3)))));

    FILE *f;
    f = fopen("GreatStellatedDodecahedron.pov", "wb");
    fprintf(f, theader, 7409);//7412);
    printvvec(f, v);
    printvveclines(f, v, 2*PHI*(1/SQ3));
    fprintf(f, tstartmesh);
    v = concat(v, cyclicperm(signperm(mvvec(vec(0, 2-PHI, PHI-1)*(1/SQ3)))));
    printvvectriangles(f, v, (2*PHI-2)*(1/SQ3), (2*PHI-2)*(1/SQ3), (4-2*PHI)*(1/SQ3));
    fprintf(f, tendmesh);
    fprintf(f, tfooter);
    fclose(f);
}

void GreatDodecahedron()
{
    vector<vec> v;
    v = cyclicperm(signperm(mvvec(vec(0, PHI, 1)*(1/sqrt(PHI+2)))));

    FILE *f;
    f = fopen("GreatDodecahedron.pov", "wb");
    fprintf(f, theader, 11404);
    printvveclines(f, v, 2*(1/sqrt(PHI+2)));
    v = concat(v, concat(signperm(mvvec(vec(PHI-1, PHI-1, PHI-1)*(1/sqrt(PHI+2)))), cyclicperm(signperm(mvvec(vec(0, 2-PHI, 1)*(1/sqrt(PHI+2)))))));
    printvvec(f, v);
    fprintf(f, tstartmesh);
    printvvectriangles(f, v, (2*PHI-2)*(1/sqrt(PHI+2)), (2*PHI-2)*(1/sqrt(PHI+2)), (2)*(1/sqrt(PHI+2)));
    fprintf(f, tendmesh);
    fprintf(f, tfooter);
    fclose(f);
}

vector<vec> IcosaParse(const char *vs)
{
    vector<vec> v, p;
    v = cyclicperm(signperm(mvvec(vec(0, PHI, 1))));
vec av;
    vector<vec>::iterator i, j, k;
    int q;
    static const vec2 rats[9] = {vec2(1, 0), vec2(PHI-1, 2-PHI), vec2(2-PHI, PHI-1), vec2(0, 1), vec2(0, PHI-1), vec2(0, 2-PHI), vec2(0, 0), vec2(2-PHI, 0), vec2(PHI-1, 0)};

    for(i = v.begin(); i!=v.end(); ++i)
        for(j = v.begin(); j!=v.end(); ++j)
            for(k = v.begin(); k!=v.end(); ++k)
                if(eqt((*i-*j).norm(), (*j-*k).norm(), (*k-*i).norm(), 2, 2, 2)&&(*i^*j)**k>0)
                {
                    vec t3 = *i*PHI*PHI+*j*PHI*PHI-*k*PHI*PHI*PHI, t1 = *j*PHI*PHI+*k*PHI*PHI-*i*PHI*PHI*PHI, t2 = *k*PHI*PHI+*i*PHI*PHI-*j*PHI*PHI*PHI;
                    for(q = 0; vs[q]; )
                    {
                        if(vs[q]<48)
                            break;
                        if(vs[q+1]<48)
                        {
                            p = concat(p, mvvec(t3+(t1-t3)*rats[vs[q]-'0'].x+(t2-t3)*rats[vs[q]-'0'].y));
                            q += 2;
                            continue;
                        }
                        if(vs[q+4]<48)
                        {
                            vec2 a = rats[vs[q]-'0'], b = rats[vs[q+1]-'0'], c = rats[vs[q+2]-'0'], d = rats[vs[q+3]-'0'];
                            double idet = 1/((a-b).x*(d-c).y-(a-b).y*(d-c).x);
//fprintf(stderr, "%lf, %lf    %lf, %lf         %lf\n", (a-b).x, (d-c).x, (a-b).y, (d-c).y, idet);
                            vec2 e = vec2(vec2((d-c).y, (d-c).x*-1)*(d-b), vec2((a-b).y*-1, (a-b).x)*(d-b))*idet;
                            vec2 r = (a-b)*e.x+b;
//fprintf(stderr, "%lf, %lf    %lf, %lf         %lf\n", r.x, r.y, t1.x, t1.y, idet);
//fprintf(stderr, "(a-b)={%lf, %lf}, x=%lf, b={%lf, %lf}, e={%lf, %lf}\n(c-d)={%lf, %lf}, y=%lf, d={%lf, %lf}, e={%lf, %lf}\n",
//(a-b).x, (a-b).y, e.x, b.x, b.y, ((a-b)*e.x+b).x, ((a-b)*e.x+b).y,
//(c-d).x, (c-d).y, e.y, d.x, d.y, ((c-d)*e.y+d).x, ((c-d)*e.y+d).y
//);
//fprintf(stderr, "%lf %lf\n", r.x, r.y);
                            p = concat(p, mvvec(t3+(t1-t3)*r.x+(t2-t3)*r.y));
                            av = av+(t3+(t1-t3)*r.x+(t2-t3)*r.y);
                            //p = concat(p, mvvec(vec()));
                            q += 5;
                            continue;
                        }
                        break;
                    }
                }

//printf("%lf %lf %lf\n", av.x, av.y, av.z);
    double r = 0;
    for(i = p.begin(); i!=p.end(); ++i)
//i = p.begin();
        if(r<i->norm())
            r = i->norm();

    for(i = p.begin(); i!=p.end(); ++i)
        *i = *i*(1/r);

    return p;
}

void StellatedIcosahedron(const char *fn, int rs, const char *vs, const char *ls, const char *dls, const char *ts)
{
    vector<vec> v;

    FILE *f;
    f = fopen(fn, "wb");
    fprintf(f, theader, rs);
    printvvec(f, IcosaParse(vs));
    printvvecdottedlines(f, IcosaParse(dls));
    printvveclines(f, IcosaParse(ls));
    fprintf(f, tstartmesh);
    printvvectriangles(f, IcosaParse(ts));
    fprintf(f, tendmesh);
    fprintf(f, tfooter);
    fclose(f);
}

int main()
{
    SmallStellatedDodecahedron();
    GreatStellatedDodecahedron();
    GreatDodecahedron();
    StellatedIcosahedron("GreatIcosahedron.pov", 31234, "0 1 2 0417 1428 2538 ", "0 3 ", "0 0417 0417 1 1 1428 1428 2 2 2538 2538 3 ", "0 1 0417 1 2 1428 2 3 2538 ");
    StellatedIcosahedron("CompoundOfFiveTetrahedra.pov", 22113, "2 2514 1427 2715 1528 ", "2 5 ", "2 2 2514 1427 1427 2715 2715 1528 ", "2 2514 1427 2 2715 1528 ");
    return 0;
}