static void draw_line(void)
{
double *x, *y;
int max;
// int num; // unreferenced
int i, j, k, l;
int p;
max = (patt.v_num > patt.h_num)? patt.v_num: patt.h_num;
x = (double *)malloc( sizeof(double)*max );
y = (double *)malloc( sizeof(double)*max );
if( x == NULL || y == NULL ) exit(0);
i = check_num;
for( j = 0; j < patt.v_num; j++ ) {
for( k = 0; k < patt.h_num; k++ ) {
x[k] = patt.point[i][j*patt.h_num+k].x_coord;
y[k] = patt.point[i][j*patt.h_num+k].y_coord;
}
draw_line2( x, y, patt.h_num );
}
for( j = 0; j < patt.h_num; j++ ) {
for( k = 0; k < patt.v_num; k++ ) {
x[k] = patt.point[i][k*patt.h_num+j].x_coord;
y[k] = patt.point[i][k*patt.h_num+j].y_coord;
}
draw_line2( x, y, patt.v_num );
}
for( j = 3 - patt.v_num; j < patt.h_num - 2; j++ ) {
p = 0;
for( k = 0; k < patt.v_num; k++ ) {
l = j+k;
if( l < 0 || l >= patt.h_num ) continue;
x[p] = patt.point[i][k*patt.h_num+l].x_coord;
y[p] = patt.point[i][k*patt.h_num+l].y_coord;
p++;
}
draw_line2( x, y, p );
}
for( j = 2; j < patt.h_num + patt.v_num - 3; j++ ) {
p = 0;
for( k = 0; k < patt.v_num; k++ ) {
l = j-k;
if( l < 0 || l >= patt.h_num ) continue;
x[p] = patt.point[i][k*patt.h_num+l].x_coord;
y[p] = patt.point[i][k*patt.h_num+l].y_coord;
p++;
}
draw_line2( x, y, p );
}
free( x );
free( y );
}
void draw_world()
{
world_z = world.height+25;
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glPushMatrix();
glTranslatef(0.0f, 0.0f, -world_z);
int i,j,k;
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
int c = 0;
draw_box(world.width,world.height);
glColor3f(color[c].r,color[c].g,color[c].b);
for(i=0; i<num_projectors; i++)
{
if(select_type == PROJECTOR && select_number == i)
draw_selected_line(projector[i].l);
else
draw_line(projector[i].l);
draw_point(projector[i].d);
glColor3f(color[c].r,color[c].g,color[c].b);
}
c++;
glColor3f(color[c].r,color[c].g,color[c].b);
for(i=0; i<num_mirrors; i++)
{
if(select_type == MIRROR && select_number == i)
draw_selected_line(mirror[i].l);
else
draw_line(mirror[i].l);
glColor3f(color[c].r,color[c].g,color[c].b);
}
c++;
glColor3f(color[c].r,color[c].g,color[c].b);
for(i=0; i<num_blocks; i++)
{
if(select_type == BLOCK && select_number == i)
draw_selected_line(block[i].l);
else
draw_line(block[i].l);
glColor3f(color[c].r,color[c].g,color[c].b);
}
/*for(i=0; i<num_projectors; i++)
{
for(j=0; j<projector[i].num_pixels; j++)
draw_line(projector[i].pixels[j]);
draw_point(projector[i].d);
}*/
for(i=0; i<num_projectors; i++)
{
for(j=0; j<projector[i].num_pixels; j++)
{
glColor3f(color[c].r,color[c].g,color[c++].b);
point p,fp;
float dist = INF;
int type = 1,num;
for(k=0; k<num_mirrors; k++)
{
p = find_intersection(mirror[k].l,projector[i].pixels[j]);
if( (abs(p.x) <= world.width/2) && (abs(p.y) <= world.height/2) && check_point_on_line_segment(mirror[k].l,p) )
if(find_side(projector[i].l.p1,projector[i].l.p2,p) == -1)
{
float d = distance_between_points(p,projector[i].pixels[j].p1);
if( d < dist )
{
fp = p;
dist = d;
type = 1;
num = k;
if(find_side(mirror[k].l.p1,mirror[k].l.p2,projector[i].pixels[j].p1) == -1)
type = 2;
}
}
}
for(k=0; k<num_blocks; k++)
{
p = find_intersection(block[k].l,projector[i].pixels[j]);
if(abs(p.x) <= world.width/2 && abs(p.y) <= world.height/2 && check_point_on_line_segment(block[k].l,p))
if(find_side(projector[i].l.p1,projector[i].l.p2,p) == -1)
{
float d = distance_between_points(p,projector[i].pixels[j].p1);
if( d < dist )
{
fp = p;
dist = d;
type = 2;
}
}
}
for(k=0; k<num_world; k++)
{
p = find_intersection(world.l[k],projector[i].pixels[j]);
if(abs(p.x) <= world.width/2 && abs(p.y) <= world.height/2 && check_point_on_line_segment(world.l[k],p))
if(find_side(projector[i].l.p1,projector[i].l.p2,p) == -1)
{
float d = distance_between_points(p,projector[i].pixels[j].p1);
if( d < dist )
{
fp = p;
dist = d;
type = 2;
}
}
}
for(k=0; k<num_projectors; k++)
{
if(k!=i)
{
p = find_intersection(projector[k].l,projector[i].pixels[j]);
if(abs(p.x) <= world.width/2 && abs(p.y) <= world.height/2 && check_point_on_line_segment(projector[k].l,p))
if(find_side(projector[i].l.p1,projector[i].l.p2,p) == -1)
{
float d = distance_between_points(p,projector[i].pixels[j].p1);
if( d < dist )
{
fp = p;
dist = d;
type = 2;
}
}
}
}
draw_line2(fp,projector[i].pixels[j].p2);
if(type==1)
{
//float angle = find_angle(projector[i].pixels[j],mirror[num].l);
//float angle = find_angle2(projector[i].pixels[j].p1,fp,mirror[num].l.p1,mirror[num].l.p2);
line n;
n.p1 = fp;
n.m = tan(PI + 2*atan(mirror[num].l.m) - atan(projector[i].pixels[j].m));
n.c = n.p1.y - n.p1.x*n.m;
draw_reflections(n,num,1);
}
}
}
//glMatrixMode(GL_MODELVIEW);
//glLoadIdentity();
//glPushMatrix();
//glTranslatef(0.0f, 0.0f, -5.0f);
//glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
//glRotatef(rot,1,2,0);
//glRasterPos2f(-0.5,0);
//glColor4f(0.0f, 1.0f, 1.0f,1.0f);
//glutBitmapString(GLUT_BITMAP_TIMES_ROMAN_24, "Rishi Raj Singh Jhelumi");
//glBegin(GL_POINTS);
//glVertex3f(0,0,-world_z);
//glEnd();
//glPopMatrix();
glFlush();
//glutSwapBuffers();
}
void draw_reflections(line l,int m,int side)
{
int i,j,k;
point p,fp;
float dist = INF;
int type = 1,num;
for(k=0; k<num_mirrors; k++)
{
if(k!=m)
{
p = find_intersection(mirror[k].l,l);
if( (abs(p.x) <= world.width/2) && (abs(p.y) <= world.height/2) && check_point_on_line_segment(mirror[k].l,p) )
if(find_side(mirror[m].l.p1,mirror[m].l.p2,p) == side)
{
float d = distance_between_points(p,l.p1);
if( d < dist )
{
fp = p;
dist = d;
type = 1;
num = k;
if(find_side(mirror[k].l.p1,mirror[k].l.p2,l.p1) == -1)
type = 2;
}
}
}
}
for(k=0; k<num_blocks; k++)
{
p = find_intersection(block[k].l,l);
if(abs(p.x) <= world.width/2 && abs(p.y) <= world.height/2 && check_point_on_line_segment(block[k].l,p))
if(find_side(mirror[m].l.p1,mirror[m].l.p2,p) == side)
{
float d = distance_between_points(p,l.p1);
if( d < dist )
{
fp = p;
dist = d;
type = 2;
}
}
}
for(k=0; k<num_world; k++)
{
p = find_intersection(world.l[k],l);
if(abs(p.x) <= world.width/2 && abs(p.y) <= world.height/2 && check_point_on_line_segment(world.l[k],p))
if(find_side(mirror[m].l.p1,mirror[m].l.p2,p) == side)
{
float d = distance_between_points(p,l.p1);
if( d < dist )
{
fp = p;
dist = d;
type = 2;
}
}
}
for(k=0; k<num_projectors; k++)
{
p = find_intersection(projector[k].l,l);
if(abs(p.x) <= world.width/2 && abs(p.y) <= world.height/2 && check_point_on_line_segment(projector[k].l,p))
if(find_side(mirror[m].l.p1,mirror[m].l.p2,p) == side)
{
float d = distance_between_points(p,l.p1);
if( d < dist )
{
fp = p;
dist = d;
type = 2;
}
}
}
draw_line2(fp,l.p1);
if(type==1)
{
//float angle = find_angle(l,mirror[m].l);
line n;
n.p1 = fp;
n.m = tan(PI + 2*atan(mirror[num].l.m) - atan(l.m));
n.c = n.p1.y - n.p1.x*n.m;
draw_reflections(n,num,1);
}
}