void myKeyHandler(unsigned char ch, int x, int y) {
switch(ch) {
case 'q':
endSubdiv(0);
break;
case 'w':
BEGINNING = !BEGINNING;
ROTATED = !ROTATED;
rotate();
break;
case 'e':
WIRE = !WIRE;
if(WIRE) {
printf("Displaying wire frame.\n");
}
else {
printf("Displaying solid frame.\n");
}
break;
case 'r':
POINTS = !POINTS;
if(POINTS) {
printf("Displaying points only.\n");
}
else {
printf("No longer in points only mode.\n");
}
break;
case 'a':
verticalSubdivision();
break;
case 'b':
horizontalSubdivision();
break;
case 'd':
GOURAD = !GOURAD;
if(GOURAD) {
printf("Displaying Gourad Shading.\n");
}
else {
printf("Displaying Phong Shading.\n");
}
break;
case 's':
if(shininess == SHINE1) {
shininess = SHINE2;
}
else if(shininess == SHINE2) {
shininess = SHINE3;
}
else if(shininess == SHINE3) {
shininess = SHINE1;
}
printf("Shininess value is %f. \n", shininess);
break;
case 'z':
BEGINNING = 1;
ROTATED = 0;
WIRE = 0;
count = 0;
divi = 3;
init();
printf("Re-entering 2D mode.\n");
break;
default:
/* Unrecognized keypress */
break;
}
glutPostRedisplay();
return;
}
void myKeyHandler(unsigned char ch, int x, int y) {
switch(ch) {
case 'w':
setup3DModel();
break;
case 'e':
toggleDisplayMode();
break;
case 'r':
toggleControlPoints();
break;
case 'a':
subdivideVertical();
break;
case 'b':
subdivideHorizontal(true);
break;
case 'd':
toggleShadingMode();
break;
case 's':
if (!drawing3D()) {
return;
} // if
cout << "Changing shininess." << endl;
shininessValue++;
if (shininessValue > HIGH_SHINY) {
shininessValue = LOW_SHINY;
} // if
break;
case 'z':
toggle3D();
resetCamera();
break;
case 'p':
if (!drawing3D()) {
return;
} // if
cout << "[NYI] Changing to the ";
extraFeatureMode++;
if (extraFeatureMode > PROFILE_MODE) {
extraFeatureMode = AVERAGE_MODE;
} // if
if (extraFeatureMode == AVERAGE_MODE) {
cout << "average of the normal of all of the polygons";
} // if
else if (extraFeatureMode == PROFILE_MODE) {
cout << "normal from the profile curve.";
} // else if
cout << endl;
break;
case 'c':
resetCamera();
cout << "Camera reset." << endl;
break;
case '=':
zoomCamera(0.1);
break;
case 'C':
removeAllPoints();
resetCamera();
cout << "Removing all points." << endl;
break;
case 'q':
endSubdiv(0);
break;
default:
/* Unrecognized keypress */
return;
}
glutPostRedisplay();
return;
}
void myKeyHandler(unsigned char ch, int x, int y)
{
int i;
static int subdiv=0;
struct point_t *slice;
struct point_t *linecur;
struct point_t *cur;
struct point_t *new_points;
struct slice_t *cur_slice,*cur2_slice;
struct point_t *cur2;
struct point_t points[5];
double a,b,c;
GLfloat v1[3],v2[3],v3[3];
double deginc;
// struct slice_t *cur_slice;
switch(ch)
{
case 'q':
endSubdiv(0);
break;
case 'z':
mode=(~mode)&1;
printf("%s\n",mode?"3D mode":"2D mode");
switch(mode)
{
case 0:
resetCamera();
break;
case 1:
reset3DCamera();
break;
}
break;
case 'k':
/* test phong stuff */
cur_slice = slices;
cur2_slice = slices->n;
//while(cur_slice!=NULL)
{
cur = cur_slice->line;
cur2 = cur2_slice->line;
//while(cur->n!=NULL)
{
/* right vertex */
add_vec(&(cur->nx),&(cur->n->nx),&(points[0].nx));
normalize(&(points[0].nx));
sub_vec(&(cur->n->x),&(cur->x),v1);
v1[0] /= 2; v1[1] /= 2; v1[2] /= 2;
add_vec(&(cur->x),v1,&(points[0].x));
/* top vertex */
add_vec(&(cur->nx),&(cur2->nx),&(points[1].nx));
normalize(&(points[1].nx));
sub_vec(&(cur2->x),&(cur->x),v1);
v1[0] /= 2; v1[1] /= 2; v1[2] /= 2;
add_vec(&(cur->x),v1,&(points[1].x));
/* left vertex */
add_vec(&(cur2->nx),&(cur2->n->nx),&(points[2].nx));
normalize(&(points[2].nx));
sub_vec(&(cur2->n->x),&(cur2->x),v1);
v1[0] /= 2; v1[1] /= 2; v1[2] /= 2;
add_vec(&(cur2->x),v1,&(points[2].x));
/* bottom vertex */
add_vec(&(cur2->n->nx),&(cur->n->nx),&(points[3].nx));
normalize(&(points[3].nx));
sub_vec(&(cur->n->x),&(cur2->n->x),v1);
v1[0] /= 2; v1[1] /= 2; v1[2] /= 2;
add_vec(&(cur2->n->x),v1,&(points[3].x));
/* center vertex */
add_vec(&(points[0].nx),&(points[1].nx),v1);
add_vec(&(points[2].nx),&(points[3].nx),v2);
add_vec(v1,v2,&(points[4].nx));
normalize(&(points[4].nx));
sub_vec(&(points[3].x),&(cur2->n->x),v1);
sub_vec(&(points[2].x),&(cur2->n->x),v2);
add_vec(v1,v2,v3);
normalize(v3);
a=sqrt(v1[0]*v1[0]+v1[1]*v1[1]+v1[2]*v1[2]);
b=sqrt(v2[0]*v2[0]+v2[1]*v2[1]+v2[2]*v2[2]);
c=sqrt(a*a+b*b);
v3[0] *= c; v3[1] *= c; v3[2] *= c;
add_vec(&(cur2->n->x),v3,&(points[4].x));
printf("v2[0]=%f,v2[1]=%f,v2[2]=%f\nv3[0]=%f,v3[1]=%f,v3[2]=%f\n",v2[0],v2[1],v2[2],v3[0],v3[1],v3[2]);
for(i=0; i<5; i++)
printf("points[%d]->x=%f,points[%d]->y=%f,points[%d]->z=%f\n",
i,points[i].x,i,points[i].y,i,points[i].z);
printf("cur->x=%f,cur->y=%f,cur->z=%f\ncur->n->x=%f,cur->n->y=%f,cur->n->z=%f\n",
cur->x,cur->y,cur->z,cur->n->x,cur->n->y,cur->n->z);
printf("cur2->x=%f,cur2->y=%f,cur2->z=%f\ncur2->n->x=%f,cur2->n->y=%f,cur2->n->z=%f\n",
cur2->x,cur2->y,cur2->z,cur2->n->x,cur2->n->y,cur2->n->z);
cur = cur->n;
cur2 = cur2->n;
}
cur_slice = cur_slice->n;
cur2_slice = cur2_slice->n != NULL ? cur2_slice->n : slices; /* circle around */
}
break;
case 'n':
normals=(~normals)&1;
printf("Normal mode %s\n",normals?"on":"off");
break;
case 'e':
solid=(~solid)&1;
printf("%s\n",solid?"Solid mode":"Wireframe mode");
switch(solid)
{
case 0:
glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
break;
case 1:
glPolygonMode(GL_FRONT_AND_BACK,GL_FILL);
break;
}
break;
case 'r':
faces=(~faces)&1;
printf("%s\n",faces?"Faces mode":"Control points mode");
break;
case 'w': /* calculate initial 3d object */
if(num<5)
printf("There must be at least 5 control points.\n");
else if(!mode)
{
mode=(~mode)&1;
printf("%s\n",mode?"3D mode":"2D mode");
switch(mode)
{
case 0:
resetCamera();
break;
case 1:
reset3DCamera();
break;
}
freeModel();
subdiv_v = 0;
subdiv_h = NUMSLICES;
/* the radius of the circle for each of the points is x */
for(i=0;i<subdiv_h;i++)
{
ALLOC_POINT(slice);
cur=slice;
linecur=line;
while(linecur!=NULL)
{
cur->z = linecur->x*sin(DEGINC*i);
cur->x = linecur->x*cos(DEGINC*i);
cur->y = linecur->y;
linecur = linecur->n;
if(linecur!=NULL)
{
ALLOC_POINT(cur->n);
cur = cur->n;
}
}
addSlice(slice);
}
}
recompute_normals();
break;
case 's': /* horizontal subdivision */
if(!mode || slices==NULL) break;
/* backup the original slice */
new_points = duplicate_slice(slices->line);
freeModel();
subdiv_h<<=1;
subdiv++;
printf("Horizontal subdivision level %d\n",subdiv);
deginc = 2*M_PI/subdiv_h;
for(i=0;i<subdiv_h;i++)
{
ALLOC_POINT(slice);
cur=slice;
linecur=new_points;
while(linecur!=NULL)
{
cur->z = linecur->x*sin(deginc*i);
cur->x = linecur->x*cos(deginc*i);
cur->y = linecur->y;
linecur = linecur->n;
if(linecur!=NULL)
{
ALLOC_POINT(cur->n);
cur = cur->n;
}
}
addSlice(slice);
}
recompute_normals();
break;
case 'a': /* vertical subdivision */
if(!mode || slices==NULL) break;
cur_slice=slices;
subdiv_v++;
printf("Vertical subdivision level %d\n",subdiv_v);
linecur = cur_slice->line;
/* calc the first point */
cur = new_points = calc_point(linecur,linecur,linecur->n,linecur->n->n);
/* calc middle and last points */
while(linecur->n->n!=NULL)
{
if(linecur->n->n->n!=NULL) /* middle points */
cur->n = calc_point(linecur,linecur->n,linecur->n->n,linecur->n->n->n);
else
cur->n = calc_point(linecur,linecur->n,linecur->n->n,linecur->n->n);
cur = cur->n;
linecur = linecur->n;
}
interleave(cur_slice->line,new_points);
new_points = duplicate_slice(cur_slice->line);
deginc = 2*M_PI/subdiv_h;
freeModel();
for(i=0;i<subdiv_h;i++)
{
ALLOC_POINT(slice);
cur=slice;
linecur=new_points;
while(linecur!=NULL)
{
cur->z = linecur->x*sin(deginc*i);
cur->x = linecur->x*cos(deginc*i);
cur->y = linecur->y;
linecur = linecur->n;
if(linecur!=NULL)
{
ALLOC_POINT(cur->n);
cur = cur->n;
}
}
addSlice(slice);
}
recompute_normals();
break;
case 'd':
shading=(~shading)&1;
printf("%s shading\n",shading?"Phong":"Gouraud");
break;
case '<':
if(mode)
{
glMatrixMode(GL_MODELVIEW);
glRotatef(1,0.0,1.0,0.0);
}
break;
case '>':
if(mode)
{
glMatrixMode(GL_MODELVIEW);
glRotatef(-1,0.0,1.0,0.0);
}
break;
default:
/* Unrecognized keypress */
return;
}
glutPostRedisplay();
return;
}
