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AmigActive 6
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Mesa-3.1
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src-aux.aos
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teapot.c
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C/C++ Source or Header
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1999-07-04
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296 lines
/*
* teapot.c
*/
#include <GL/gl.h>
#include <GL/glaux.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 long patchdata[][16] =
{
{102, 103, 104, 105, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}, /* rim */
{12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27}, /* body */
{24, 25, 26, 27, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40}, /* body */
{96, 96, 96, 96, 97, 98, 99, 100, 101, 101, 101, 101, 0, 1, 2, 3,}, /* lid */
{0, 1, 2, 3, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117}, /* lid */
{118, 118, 118, 118, 124, 122, 119, 121, 123, 126, 125, 120, 40, 39, 38, 37},/* bottom */
{41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56}, /* handle */
{53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 28, 65, 66, 67}, /* handle */
{68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83}, /* spout */
{80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95} /* spout */
};
static const float cpdata[][3] =
{
{0.2, 0, 2.7},
{0.2, -0.112, 2.7},
{0.112, -0.2, 2.7},
{0, -0.2, 2.7},
{1.3375, 0, 2.53125},
{1.3375, -0.749, 2.53125},
{0.749, -1.3375, 2.53125},
{0, -1.3375, 2.53125},
{1.4375, 0, 2.53125},
{1.4375, -0.805, 2.53125},
{0.805, -1.4375, 2.53125},
{0, -1.4375, 2.53125},
{1.5, 0, 2.4},
{1.5, -0.84, 2.4},
{0.84, -1.5, 2.4},
{0, -1.5, 2.4},
{1.75, 0, 1.875},
{1.75, -0.98, 1.875},
{0.98, -1.75, 1.875},
{0, -1.75, 1.875},
{2, 0, 1.35},
{2, -1.12, 1.35},
{1.12, -2, 1.35},
{0, -2, 1.35},
{2, 0, 0.9},
{2, -1.12, 0.9},
{1.12, -2, 0.9},
{0, -2, 0.9},
{-2, 0, 0.9},
{2, 0, 0.45},
{2, -1.12, 0.45},
{1.12, -2, 0.45},
{0, -2, 0.45},
{1.5, 0, 0.225},
{1.5, -0.84, 0.225},
{0.84, -1.5, 0.225},
{0, -1.5, 0.225},
{1.5, 0, 0.15},
{1.5, -0.84, 0.15},
{0.84, -1.5, 0.15},
{0, -1.5, 0.15},
{-1.6, 0, 2.025},
{-1.6, -0.3, 2.025},
{-1.5, -0.3, 2.25},
{-1.5, 0, 2.25},
{-2.3, 0, 2.025},
{-2.3, -0.3, 2.025},
{-2.5, -0.3, 2.25},
{-2.5, 0, 2.25},
{-2.7, 0, 2.025},
{-2.7, -0.3, 2.025},
{-3, -0.3, 2.25},
{-3, 0, 2.25},
{-2.7, 0, 1.8},
{-2.7, -0.3, 1.8},
{-3, -0.3, 1.8},
{-3, 0, 1.8},
{-2.7, 0, 1.575},
{-2.7, -0.3, 1.575},
{-3, -0.3, 1.35},
{-3, 0, 1.35},
{-2.5, 0, 1.125},
{-2.5, -0.3, 1.125},
{-2.65, -0.3, 0.9375},
{-2.65, 0, 0.9375},
{-2, -0.3, 0.9},
{-1.9, -0.3, 0.6},
{-1.9, 0, 0.6},
{1.7, 0, 1.425},
{1.7, -0.66, 1.425},
{1.7, -0.66, 0.6},
{1.7, 0, 0.6},
{2.6, 0, 1.425},
{2.6, -0.66, 1.425},
{3.1, -0.66, 0.825},
{3.1, 0, 0.825},
{2.3, 0, 2.1},
{2.3, -0.25, 2.1},
{2.4, -0.25, 2.025},
{2.4, 0, 2.025},
{2.7, 0, 2.4},
{2.7, -0.25, 2.4},
{3.3, -0.25, 2.4},
{3.3, 0, 2.4},
{2.8, 0, 2.475},
{2.8, -0.25, 2.475},
{3.525, -0.25, 2.49375},
{3.525, 0, 2.49375},
{2.9, 0, 2.475},
{2.9, -0.15, 2.475},
{3.45, -0.15, 2.5125},
{3.45, 0, 2.5125},
{2.8, 0, 2.4},
{2.8, -0.15, 2.4},
{3.2, -0.15, 2.4},
{3.2, 0, 2.4},
{0, 0, 3.15},
{0.8, 0, 3.15},
{0.8, -0.45, 3.15},
{0.45, -0.8, 3.15},
{0, -0.8, 3.15},
{0, 0, 2.85},
{1.4, 0, 2.4},
{1.4, -0.784, 2.4},
{0.784, -1.4, 2.4},
{0, -1.4, 2.4},
{0.4, 0, 2.55},
{0.4, -0.224, 2.55},
{0.224, -0.4, 2.55},
{0, -0.4, 2.55},
{1.3, 0, 2.55},
{1.3, -0.728, 2.55},
{0.728, -1.3, 2.55},
{0, -1.3, 2.55},
{1.3, 0, 2.4},
{1.3, -0.728, 2.4},
{0.728, -1.3, 2.4},
{0, -1.3, 2.4},
{0, 0, 0},
{1.425, -0.798, 0},
{1.5, 0, 0.075},
{1.425, 0, 0},
{0.798, -1.425, 0},
{0, -1.5, 0.075},
{0, -1.425, 0},
{1.5, -0.84, 0.075},
{0.84, -1.5, 0.075}
};
long GRD;
#define TEAPOTSOLID 0
#define TEAPOTWIRE 1
static GLuint teapots[2] =
{0, 0};
static const float tex[2][2][2] =
{
{
{0, 0},
{1, 0}},
{
{0, 1},
{1, 1}}};
static void solidTeapot(long grid, GLdouble scale)
{
float p[4][4][3], q[4][4][3], r[4][4][3], s[4][4][3];
long i, j, k, l;
if (grid < 2)
grid = 7;
GRD = grid;
teapots[TEAPOTSOLID] = glGenLists(1);
glNewList(teapots[TEAPOTSOLID], GL_COMPILE);
glPushMatrix();
glRotatef(270.0, 1.0, 0.0, 0.0);
glScalef(0.5 * scale, 0.5 * scale, 0.5 * scale);
glTranslatef(0.0, 0.0, -1.5);
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_TEXTURE_COORD_2, 0, 1, 2, 2, 0, 1, 4, 2, &tex[0][0][0]);
glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, &p[0][0][0]);
glEnable(GL_MAP2_VERTEX_3);
glEnable(GL_MAP2_TEXTURE_COORD_2);
glMapGrid2f(GRD, 0.0, 1.0, GRD, 0.0, 1.0);
glEvalMesh2(GL_FILL, 0, GRD, 0, GRD);
glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, &q[0][0][0]);
glEvalMesh2(GL_FILL, 0, GRD, 0, GRD);
if (i < 6) {
glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, &r[0][0][0]);
glEvalMesh2(GL_FILL, 0, GRD, 0, GRD);
glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, &s[0][0][0]);
glEvalMesh2(GL_FILL, 0, GRD, 0, GRD);
}
}
glDisable(GL_MAP2_VERTEX_3);
glDisable(GL_MAP2_TEXTURE_COORD_2);
glPopMatrix();
glEndList();
}
static void wireTeapot(long grid, GLdouble scale)
{
float p[4][4][3], q[4][4][3], r[4][4][3], s[4][4][3];
long i, j, k, l;
if (grid < 2)
grid = 7;
GRD = grid;
teapots[TEAPOTWIRE] = glGenLists(1);
glNewList(teapots[TEAPOTWIRE], GL_COMPILE);
glPushMatrix();
glRotatef(270.0, 1.0, 0.0, 0.0);
glScalef(0.5 * scale, 0.5 * scale, 0.5 * scale);
glTranslatef(0.0, 0.0, -1.5);
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_TEXTURE_COORD_2, 0, 1, 2, 2, 0, 1, 4, 2, &tex[0][0][0]);
glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, &p[0][0][0]);
glEnable(GL_MAP2_VERTEX_3);
glEnable(GL_MAP2_TEXTURE_COORD_2);
glMapGrid2f(GRD, 0.0, 1.0, GRD, 0.0, 1.0);
glEvalMesh2(GL_LINE, 0, GRD, 0, GRD);
glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, &q[0][0][0]);
glEvalMesh2(GL_LINE, 0, GRD, 0, GRD);
if (i < 6) {
glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, &r[0][0][0]);
glEvalMesh2(GL_LINE, 0, GRD, 0, GRD);
glMap2f(GL_MAP2_VERTEX_3, 0, 1, 3, 4, 0, 1, 12, 4, &s[0][0][0]);
glEvalMesh2(GL_LINE, 0, GRD, 0, GRD);
}
}
glDisable(GL_MAP2_VERTEX_3);
glDisable(GL_MAP2_TEXTURE_COORD_2);
glPopMatrix();
glEndList();
}
void auxSolidTeapot(GLdouble scale)
{
if (glIsList(teapots[TEAPOTSOLID]) == 0)
solidTeapot(14, scale);
glCallList(teapots[TEAPOTSOLID]);
}
void auxWireTeapot(GLdouble scale)
{
if (glIsList(teapots[TEAPOTWIRE]) == 0)
wireTeapot(10, scale);
glCallList(teapots[TEAPOTWIRE]);
}