/* fast_teapot.c - the GLUT teapot code without push/pop attrib/matrix overhead and without normal/texture coordinate generation */ #if __APPLE__ #include <GLUT/glut.h> #else #include <GL/glut.h> #endif #include "fast_teapot.h" /* Rim, body, lid, and bottom data must be reflected in x and y; handle and spout data across the y axis only. */ static const int patchdata[][16] = { /* rim */ {102, 103, 104, 105, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}, /* body */ {12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27}, {24, 25, 26, 27, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40}, /* lid */ {96, 96, 96, 96, 97, 98, 99, 100, 101, 101, 101, 101, 0, 1, 2, 3,}, {0, 1, 2, 3, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117}, /* bottom */ {118, 118, 118, 118, 124, 122, 119, 121, 123, 126, 125, 120, 40, 39, 38, 37}, /* handle */ {41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56}, {53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 28, 65, 66, 67}, /* spout */ {68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83}, {80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95} }; /* *INDENT-OFF* */ static const float cpdata[][3] = { {0.2f, 0.0f, 2.7f}, {0.2f, -0.112f, 2.7f}, {0.112f, -0.2f, 2.7f}, {0.0f, -0.2f, 2.7f}, {1.3375f, 0.0f, 2.53125f}, {1.3375f, -0.749f, 2.53125f}, {0.749f, -1.3375f, 2.53125f}, {0.0f, -1.3375f, 2.53125f}, {1.4375f, 0.0f, 2.53125f}, {1.4375f, -0.805f, 2.53125f}, {0.805f, -1.4375f, 2.53125f}, {0.0f, -1.4375f, 2.53125f}, {1.5f, 0.0f, 2.4f}, {1.5f, -0.84f, 2.4f}, {0.84f, -1.5f, 2.4f}, {0.0f, -1.5f, 2.4f}, {1.75f, 0.0f, 1.875f}, {1.75f, -0.98f, 1.875f}, {0.98f, -1.75f, 1.875f}, {0.0f, -1.75f, 1.875f}, {2.0f, 0.0f, 1.35f}, {2.0f, -1.12f, 1.35f}, {1.12f, -2.0f, 1.35f}, {0.0f, -2.0f, 1.35f}, {2.0f, 0.0f, 0.9f}, {2.0f, -1.12f, 0.9f}, {1.12f, -2.0f, 0.9f}, {0.0f, -2.0f, 0.9f}, {-2.0f, 0.0f, 0.9f}, {2.0f, 0.0f, 0.45f}, {2.0f, -1.12f, 0.45f}, {1.12f, -2.0f, 0.45f}, {0.0f, -2.0f, 0.45f}, {1.5f, 0.0f, 0.225f}, {1.5f, -0.84f, 0.225f}, {0.84f, -1.5f, 0.225f}, {0.0f, -1.5f, 0.225f}, {1.5f, 0.0f, 0.15f}, {1.5f, -0.84f, 0.15f}, {0.84f, -1.5f, 0.15f}, {0.0f, -1.5f, 0.15f}, {-1.6f, 0.0f, 2.025f}, {-1.6f, -0.3f, 2.025f}, {-1.5f, -0.3f, 2.25f}, {-1.5f, 0.0f, 2.25f}, {-2.3f, 0.0f, 2.025f}, {-2.3f, -0.3f, 2.025f}, {-2.5f, -0.3f, 2.25f}, {-2.5f, 0.0f, 2.25f}, {-2.7f, 0.0f, 2.025f}, {-2.7f, -0.3f, 2.025f}, {-3.0f, -0.3f, 2.25f}, {-3.0f, 0.0f, 2.25f}, {-2.7f, 0.0f, 1.8f}, {-2.7f, -0.3f, 1.8f}, {-3.0f, -0.3f, 1.8f}, {-3.0f, 0.0f, 1.8f}, {-2.7f, 0.0f, 1.575f}, {-2.7f, -0.3f, 1.575f}, {-3.0f, -0.3f, 1.35f}, {-3.0f, 0.0f, 1.35f}, {-2.5f, 0.0f, 1.125f}, {-2.5f, -0.3f, 1.125f}, {-2.65f, -0.3f, 0.9375f}, {-2.65f, 0.0f, 0.9375f}, {-2.0f, -0.3f, 0.9f}, {-1.9f, -0.3f, 0.6f}, {-1.9f, 0.0f, 0.6f}, {1.7f, 0.0f, 1.425f}, {1.7f, -0.66f, 1.425f}, {1.7f, -0.66f, 0.6f}, {1.7f, 0.0f, 0.6f}, {2.6f, 0.0f, 1.425f}, {2.6f, -0.66f, 1.425f}, {3.1f, -0.66f, 0.825f}, {3.1f, 0.0f, 0.825f}, {2.3f, 0.0f, 2.1f}, {2.3f, -0.25f, 2.1f}, {2.4f, -0.25f, 2.025f}, {2.4f, 0.0f, 2.025f}, {2.7f, 0.0f, 2.4f}, {2.7f, -0.25f, 2.4f}, {3.3f, -0.25f, 2.4f}, {3.3f, 0.0f, 2.4f}, {2.8f, 0.0f, 2.475f}, {2.8f, -0.25f, 2.475f}, {3.525f, -0.25f, 2.49375f}, {3.525f, 0.0f, 2.49375f}, {2.9f, 0.0f, 2.475f}, {2.9f, -0.15f, 2.475f}, {3.45f, -0.15f, 2.5125f}, {3.45f, 0.0f, 2.5125f}, {2.8f, 0.0f, 2.4f}, {2.8f, -0.15f, 2.4f}, {3.2f, -0.15f, 2.4f}, {3.2f, 0.0f, 2.4f}, {0.0f, 0.0f, 3.15f}, {0.8f, 0.0f, 3.15f}, {0.8f, -0.45f, 3.15f}, {0.45f, -0.8f, 3.15f}, {0.0f, -0.8f, 3.15f}, {0.0f, 0.0f, 2.85f}, {1.4f, 0.0f, 2.4f}, {1.4f, -0.784f, 2.4f}, {0.784f, -1.4f, 2.4f}, {0.0f, -1.4f, 2.4f}, {0.4f, 0.0f, 2.55f}, {0.4f, -0.224f, 2.55f}, {0.224f, -0.4f, 2.55f}, {0.0f, -0.4f, 2.55f}, {1.3f, 0.0f, 2.55f}, {1.3f, -0.728f, 2.55f}, {0.728f, -1.3f, 2.55f}, {0.0f, -1.3f, 2.55f}, {1.3f, 0.0f, 2.4f}, {1.3f, -0.728f, 2.4f}, {0.728f, -1.3f, 2.4f}, {0.0f, -1.3f, 2.4f}, {0.0f, 0.0f, 0.0f}, {1.425f, -0.798f, 0.0f}, {1.5f, 0.0f, 0.075f}, {1.425f, 0.0f, 0.0f}, {0.798f, -1.425f, 0.0f}, {0.0f, -1.5f, 0.075f}, {0.0f, -1.425f, 0.0f}, {1.5f, -0.84f, 0.075f}, {0.84f, -1.5f, 0.075f} }; /* *INDENT-ON* */ void fastTeapot(int grid) { float p[4][4][3], q[4][4][3], r[4][4][3], s[4][4][3]; long i, j, k, l; for (i = 0; i < 10; i++) { for (j = 0; j < 4; j++) { for (k = 0; k < 4; k++) { for (l = 0; l < 3; l++) { p[j][k][l] = cpdata[patchdata[i][j * 4 + k]][l]; q[j][k][l] = cpdata[patchdata[i][j * 4 + (3 - k)]][l]; if (l == 1) q[j][k][l] *= -1.0; if (i < 6) { r[j][k][l] = cpdata[patchdata[i][j * 4 + (3 - k)]][l]; if (l == 0) r[j][k][l] *= -1.0; s[j][k][l] = cpdata[patchdata[i][j * 4 + k]][l]; if (l == 0) s[j][k][l] *= -1.0; if (l == 1) s[j][k][l] *= -1.0; } } } } glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, &p[0][0][0]); glMapGrid2f(grid, 0.0, 1.0, grid, 0.0, 1.0); glEvalMesh2(GL_FILL, 0, grid, 0, grid); glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, &q[0][0][0]); glEvalMesh2(GL_FILL, 0, grid, 0, grid); if (i < 6) { glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, &r[0][0][0]); glEvalMesh2(GL_FILL, 0, grid, 0, grid); glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, &s[0][0][0]); glEvalMesh2(GL_FILL, 0, grid, 0, grid); } } }