Cylinder :: Cylinder(float r, float h, int vs, int rs)
{
// set radius
radius = r;
// set height
height = h/2.0;
// set stack interval
float stack = h / vs;
// set slice interval
float slice = (2 * M_PI) / rs;
// define the number of vertices
verts_size = (vs + 1) * (rs) + 2;
verts = new GLfloat*[verts_size];
// define the number of faces
faces_size = (vs + 1) * rs * 2;
faces = new int*[faces_size];
// define arrays for normals
v_norms = new GLfloat*[verts_size];
f_norms = new GLfloat*[faces_size];
// define to keep track of faces
// for vertex normal calculation
int vert_faces[verts_size];
// VERTICES
/////////////////////////////////////////////
GLfloat* v;
// current position of the stack on the y-axis
float curr_stack;
// current angle of rotation for slice
float curr_slice;
// current positions in the array
int pos, pos2, pos3;
// loop to set "body" vertices
for( int i = 0; i < vs + 1; i ++ )
{
// calculate stack angle
curr_stack = -i * stack;
for( int j = 0; j < rs; j++ )
{
// calculate slice angle
curr_slice = j * slice;
// calculate position in the array
pos = i * rs + j;
// allocate a new vertex
v = new GLfloat[4];
// set vertex at north pole
v[0] = radius;
v[1] = height;
v[2] = 0;
v[3] = 1;
// rotate by stack angle
v_translate(v, 0.0, curr_stack, 0.0);
// rotate by slice angle
v_rotate_y(v, curr_slice);
// store in verts array
verts[pos] = v;
// initialize vertex normal
v_norms[pos] = new GLfloat[4];
init_vector(v_norms[pos]);
// initalize vertex face count
vert_faces[pos] = 0;
}
}
pos = verts_size - 2;
// allocate a new vertex
v = new GLfloat[4];
// set vertex at north pole
v[0] = 0;
v[1] = height;
v[2] = 0;
v[3] = 1;
// store in verts array
verts[pos] = v;
// initialize vertex normal
v_norms[pos] = new GLfloat[4];
init_vector(v_norms[pos]);
// initalize vertex face count
vert_faces[pos] = 0;
pos = verts_size - 1;
// allocate a new vertex
v = new GLfloat[4];
// set vertex at south pole
v[0] = 0;
v[1] = -height;
v[2] = 0;
v[3] = 1;
// store in verts array
verts[pos] = v;
// initialize vertex normal
v_norms[pos] = new GLfloat[4];
init_vector(v_norms[pos]);
// initalize vertex face count
vert_faces[pos] = 0;
// FACES + NORMALS
/////////////////////////////////////////////
// position of face in array
int f_pos;
// first loop sets the body
for( int i = 0; i < vs; i++ )
{
for( int j = 0; j < 2*(rs-1); j+= 2 )
{
// calculate position in the array
pos = i * rs + j/2;
pos2 = (i + 1) * rs +j/2;
pos3 = pos2 + 1;
f_pos = i * 2 * rs + j;
set_face(f_pos, pos, pos2, pos3, vert_faces);
f_pos++;
pos2++;
pos3 = pos + 1;
set_face(f_pos, pos, pos2, pos3, vert_faces);
}
// calculate position in the array
pos = (i * rs)+ rs - 1;
pos2 = (i + 1) * rs + rs - 1;
pos3 = (i + 1) * rs;
f_pos++;
set_face(f_pos, pos, pos2, pos3, vert_faces);
f_pos++;
pos2 = (i+1) * rs;
pos3 = i * rs;
set_face(f_pos, pos, pos2, pos3, vert_faces);
}
// second loop sets the top endcap
////////////////////////////////////////
for( int i = 0; i < rs - 1; i++ )
{
// set positions in arrays
pos = verts_size-2;
pos2 = i;
pos3 = i + 1;
f_pos++;
set_face(f_pos, pos, pos2, pos3, vert_faces);
}
// set positions in arrays
pos = verts_size-2;
pos2 = pos3;
pos3 = 0;
f_pos++;
set_face(f_pos, pos, pos2, pos3, vert_faces);
// third loop sets the bottom endcap
////////////////////////////////////////
for( int i = 0; i < rs - 1; i++ )
{
// set positions in arrays
pos = verts_size-1;
pos3 = (vs) * rs + i;
pos2 = pos3 + 1;
f_pos++;
set_face(f_pos, pos, pos2, pos3, vert_faces);
}
// set positions in arrays
pos = verts_size-1;
pos2 = pos3;
pos3 = (vs) * rs;
f_pos++;
set_face(f_pos, pos, pos2, pos3, vert_faces);
// VERTEX NORMALS
/////////////////////////////////////////////
for( int i = 0; i < verts_size; i++ )
{
normalize(v_norms[i]);
}
v_norms[verts_size-2][0] = 0.0;
v_norms[verts_size-2][1] = 1.0;
v_norms[verts_size-2][2] = 0.0;
v_norms[verts_size-2][3] = 1.0;
v_norms[verts_size-1][0] = 0.0;
v_norms[verts_size-1][1] = -1.0;
v_norms[verts_size-1][2] = 0.0;
v_norms[verts_size-1][3] = 1.0;
}
kernel void compute_z_by_ry_local(global int *cur_y, global int *cur_z, global int *cur_r,
global int *z_by_ry, local int *orig_y, local int *new_y,
uint N, uint D, uint K, uint f_img_width) {
const uint V_SCALE = 0, H_SCALE = 1, V_TRANS = 2, H_TRANS = 3, NUM_TRANS = 4;
uint nth = get_global_id(0); // nth is the index of images
uint kth = get_global_id(1); // kth is the index of features
uint f_img_height = D / f_img_width;
// copy the original feature image to local memory
for (int dth = 0; dth < D; dth++) {
orig_y[kth * D + dth] = cur_y[kth * D + dth];
}
// wait until copying is done
barrier(CLK_LOCAL_MEM_FENCE | CLK_GLOBAL_MEM_FENCE);
// vertically scale the feature image
uint v_scale = cur_r[nth * (K * NUM_TRANS) + kth * NUM_TRANS + V_SCALE];
scale(orig_y, new_y, kth, f_img_height, f_img_width, 0, v_scale, D);
// copy new_y back to orig_y so that new_y can be used again
for (int dth = 0; dth < D; dth++) {
orig_y[kth * D + dth] = new_y[kth * D + dth];
}
// wait until copying is done
barrier(CLK_LOCAL_MEM_FENCE | CLK_GLOBAL_MEM_FENCE);
// horizontal scale the feature image
uint h_scale = cur_r[nth * (K * NUM_TRANS) + kth * NUM_TRANS + H_SCALE];
scale(orig_y, new_y, kth, f_img_height, f_img_width, h_scale, 0, D);
// copy new_y back to orig_y so that new_y can be used again
for (int dth = 0; dth < D; dth++) {
orig_y[kth * D + dth] = new_y[kth * D + dth];
}
// wait until copying is done
barrier(CLK_LOCAL_MEM_FENCE | CLK_GLOBAL_MEM_FENCE);
// vertically translate the feature image
uint v_dist = cur_r[nth * (K * NUM_TRANS) + kth * NUM_TRANS + V_TRANS];
v_translate(orig_y, new_y, kth, f_img_height, f_img_width, v_dist, D);
// copy new_y back to orig_y so that new_y can be used again
for (int dth = 0; dth < D; dth++) {
orig_y[kth * D + dth] = new_y[kth * D + dth];
}
// wait until copying is done
barrier(CLK_LOCAL_MEM_FENCE | CLK_GLOBAL_MEM_FENCE);
// horizontally translate the feature image
uint h_dist = cur_r[nth * (K * NUM_TRANS) + kth * NUM_TRANS + H_TRANS];
h_translate(orig_y, new_y, kth, f_img_height, f_img_width, h_dist, D);
// wait until all transformation is done
barrier(CLK_LOCAL_MEM_FENCE | CLK_GLOBAL_MEM_FENCE);
/* at this point, for each object, a transformed y (new_y) has been generated */
if (kth == 0) {
for (int dth = 0; dth < D; dth++) {
z_by_ry[nth * D + dth] = 0;
for (int k = 0; k < K; k++) {
z_by_ry[nth * D + dth] += new_y[k * D + dth] * cur_z[nth * K + k];
}
}
}
}
Torus :: Torus(float r, float r2, int vs, int rs)
{
// set radii
radius = r;
radius2 = r2;
// set stack interval
float stack = (2 * M_PI) / vs;
// set slice interval
float slice = (2 * M_PI) / rs;
// define the number of vertices
verts_size = vs * rs;
verts = new GLfloat*[verts_size];
// define the number of faces
faces_size = verts_size * 2;
faces = new int*[faces_size];
// define arrays for normals
v_norms = new GLfloat*[verts_size];
f_norms = new GLfloat*[faces_size];
// define to keep track of faces
// for vertex normal calculation
int vert_faces[verts_size];
// VERTICES
/////////////////////////////////////////////
GLfloat* v;
// current angle of rotation for stack
float curr_stack;
// current angle of rotation for slice
float curr_slice;
// current positions in the array
int pos, pos2, pos3;
// loop to set vertices
for( int i = 0; i < vs; i++ )
{
// calculate stack angle
curr_stack = -i * stack;
for( int j = 0; j < rs; j++ )
{
// calculate slice angle
curr_slice = j * slice;
// calculate position in the array
pos = i * rs + j;
// allocate new vertex
v = new GLfloat[4];
v[0] = 0;
v[1] = r2;
v[2] = 0;
v[3] = 1;
// rotate by stack angle
v_rotate_z(v, curr_stack);
// translate to edge of the ring
v_translate(v, r, 0.0, 0.0);
// rotate by slice angle
v_rotate_y(v, curr_slice);
// store in verts array
verts[pos] = v;
// initialize vertex normal
v_norms[pos] = new GLfloat[4];
init_vector(v_norms[pos]);
// initalize vertex face count
vert_faces[pos] = 0;
}
}
// FACES + NORMALS
/////////////////////////////////////////////
// position of face in array
int f_pos;
// first loop sets the body
for( int i = 0; i < vs; i++ )
{
for( int j = 0; j < 2*(rs-1); j+= 2 )
{
// calculate position in the array
pos = i * rs + j/2;
if(i == vs-1)
{
pos2 = j/2;
}
else
{
pos2 = (i + 1) * rs +j/2;
}
pos3 = pos2 + 1;
f_pos = i * 2 * rs + j;
set_face(f_pos, pos, pos2, pos3, vert_faces);
f_pos++;
pos2++;
pos3 = pos + 1;
set_face(f_pos, pos, pos2, pos3, vert_faces);
}
// calculate position in the array
pos = (i * rs)+ rs - 1;
if(i == vs-1)
{
pos2 = rs - 1;
pos3 = 0;
}
else
{
pos2 = (i + 1) * rs + rs - 1;
pos3 = (i + 1) * rs;
}
f_pos++;
set_face(f_pos, pos, pos2, pos3, vert_faces);
f_pos++;
if(i == vs-1)
{
pos2 = 0;
}
else
{
pos2 = (i+1) * rs;
}
pos3 = i * rs;
set_face(f_pos, pos, pos2, pos3, vert_faces);
}
// VERTEX NORMALS
/////////////////////////////////////////////
// loop through vertices
for( int i = 0; i < verts_size; i++ )
{
v_norms[i][0] = v_norms[i][0] / vert_faces[i];
v_norms[i][1] = v_norms[i][1] / vert_faces[i];
v_norms[i][2] = v_norms[i][2] / vert_faces[i];
v_norms[i][3] = 1.0;
normalize(v_norms[i]);
}
}
