| 46 | } |
| 47 | |
| 48 | const QList<Point> PrimitiveModule::getPolygon(const decimal& a,const decimal& r,const decimal& n,const decimal& z) |
| 49 | { |
| 50 | QList<Point> poly; |
| 51 | if(n==6) { |
| 52 | //TODO modify this to cater for all even values of n |
| 53 | decimal x=0.0; |
| 54 | decimal y=0.0; |
| 55 | decimal s2=r*r_sin(r_pi()/n); |
| 56 | for(auto i=0; i<n; ++i) { |
| 57 | switch(i) { |
| 58 | case 0: { |
| 59 | y=a; |
| 60 | x=-s2; |
| 61 | break; |
| 62 | } |
| 63 | case 1: { |
| 64 | x=s2; |
| 65 | break; |
| 66 | } |
| 67 | case 2: { |
| 68 | y=0.0; |
| 69 | x=r; |
| 70 | break; |
| 71 | } |
| 72 | case 3: { |
| 73 | y=-a; |
| 74 | x=s2; |
| 75 | break; |
| 76 | } |
| 77 | case 4: { |
| 78 | x=-s2; |
| 79 | break; |
| 80 | } |
| 81 | case 5: { |
| 82 | y=0.0; |
| 83 | x=-r; |
| 84 | break; |
| 85 | } |
| 86 | } |
| 87 | poly.append(Point(x,y,z)); |
| 88 | } |
| 89 | return poly; |
| 90 | } |
| 91 | return getCircle(r,n,z); |
| 92 | } |
| 93 | |
| 94 | void PrimitiveModule::createTriangle(Primitive* p,int a,int b,int c) |
| 95 | { |