надо написать программу, которая будет выводить на экран крутящийся http://ru.wikipedia.org/wiki/Додекаэдр...
написал... но несколько граней отображаются неправильно или вообще не отображаются... 
| Код |
float alpha, beta;
alpha = sqrt(2.0f / (3.0f + sqrt(5.0f)));
beta = 1.0f + sqrt(6.0f / (3.0f + sqrt(5.0f)) - 2.0f + 2.0f * sqrt(2.0f / (3.0f + sqrt(5.0f))));
vertices[0] = s_vertex( sv.x - alpha * e, sv.y + 0 * e, sv.z + beta * e );
vertices[1] = s_vertex( sv.x + alpha * e, sv.y + 0 * e, sv.z + beta * e );
vertices[2] = s_vertex( sv.x - e, sv.y - e, sv.z - e );
vertices[3] = s_vertex( sv.x - e, sv.y - e, sv.z + e );
vertices[4] = s_vertex( sv.x - e, sv.y + e, sv.z - e );
vertices[5] = s_vertex( sv.x - e, sv.y + e, sv.z + e );
vertices[6] = s_vertex( sv.x + e, sv.y - e, sv.z - e );
vertices[7] = s_vertex( sv.x + e, sv.y - e, sv.z + e );
vertices[8] = s_vertex( sv.x + e, sv.y + e, sv.z - e );
vertices[9] = s_vertex( sv.x + e, sv.y + e, sv.z + e );
vertices[10] = s_vertex( sv.x + beta * e, sv.y + alpha * e, sv.z - 0 * e );
vertices[11] = s_vertex( sv.x + beta * e, sv.y - alpha * e, sv.z - 0 * e );
vertices[12] = s_vertex( sv.x - beta * e, sv.y + alpha * e, sv.z + 0 * e );
vertices[13] = s_vertex( sv.x - beta * e, sv.y - alpha * e, sv.z + 0 * e );
vertices[14] = s_vertex( sv.x - alpha * e, sv.y + 0 * e, sv.z - beta * e );
vertices[15] = s_vertex( sv.x + alpha * e, sv.y - 0 * e, sv.z - beta * e );
vertices[16] = s_vertex( sv.x - 0 * e, sv.y + alpha * e, sv.z + beta * e );
vertices[17] = s_vertex( sv.x - 0 * e, sv.y + beta * e, sv.z - alpha * e );
vertices[18] = s_vertex( sv.x + 0 * e, sv.y - beta * e, sv.z + alpha * e );
vertices[19] = s_vertex( sv.x + 0 * e, sv.y - beta * e, sv.z - alpha * e );
...
//1
indices[0] = 9; indices[1] = 16; indices[2] = 1;
indices[3] = 16; indices[4] = 0; indices[5] = 1;///fail
indices[6] = 16; indices[7] = 5; indices[8] = 0;
//2
indices[9] = 18; indices[10] = 7; indices[11] = 1;
indices[12] = 18; indices[13] = 1; indices[14] = 3;//ok(?)
indices[15] = 3; indices[16] = 1; indices[17] = 0;
//3
indices[18] = 7; indices[19] = 11; indices[20] = 10;
indices[21] = 7; indices[22] = 10; indices[23] = 1;///ok
indices[24] = 1; indices[25] = 10; indices[26] = 9;
//4
indices[27] = 6; indices[28] = 11; indices[29] = 7;
indices[30] = 6; indices[31] = 7; indices[32] = 19;///ok
indices[33] = 19; indices[34] = 7; indices[35] = 18;
//5
indices[36] = 9; indices[37] = 10; indices[38] = 8;
indices[39] = 9; indices[40] = 8; indices[41] = 16;///fail
indices[42] = 16; indices[43] = 8; indices[44] = 17;
//6
indices[45] = 19; indices[46] = 2; indices[47] = 14;
indices[48] = 19; indices[49] = 14; indices[50] = 6;///ok
indices[51] = 6; indices[52] = 14; indices[53] = 15;
//7
indices[54] = 14; indices[55] = 2; indices[56] = 13;
indices[57] = 14; indices[58] = 13; indices[59] = 4;///ok
indices[60] = 4; indices[61] = 13; indices[62] = 12;
//8
indices[63] = 3; indices[64] = 13; indices[65] = 2;
indices[66] = 3; indices[67] = 2; indices[68] = 19;///ok
indices[69] = 18; indices[70] = 3; indices[71] = 19;
//9
indices[72] = 3; indices[73] = 0; indices[74] = 5;
indices[75] = 13; indices[76] = 3; indices[77] = 5;///ok
indices[78] = 13; indices[79] = 5; indices[80] = 12;
//10
indices[81] = 11; indices[82] = 6; indices[83] = 15;
indices[84] = 11; indices[85] = 15; indices[86] = 8;///ok
indices[87] = 11; indices[88] = 8; indices[89] = 10;
//11
indices[90] = 14; indices[91] = 4; indices[92] = 17;
indices[93] = 14; indices[94] = 17; indices[95] = 15;///fail
indices[96] = 15; indices[97] = 17; indices[98] = 8;
//12
indices[99] = 16; indices[100] = 17; indices[101] = 5;
indices[102] = 5; indices[103] = 17; indices[104] = 12;///fail
indices[105] = 12; indices[106] = 17; indices[107] = 4; |
в куске кода: vertices - массив вершин; s_vertex - функция, куда передаются значения sv.x - e и т.п.(положения вершин); indices - массив индексов для создания граней... там где в камменте fail, те грани не отображаются...
проект: http://rghost.ru/731081 (4 МБ)
надеюсь, что кто нибудь поможет  |
