void d3d_model_floor(int id, gs_scalar x1, gs_scalar y1, gs_scalar z1, gs_scalar x2, gs_scalar y2, gs_scalar z2, gs_scalar hrep, gs_scalar vrep) {
// Setup U and V vectors
gs_scalar vX = x2 - x1;
gs_scalar vY = y2 - y1;
gs_scalar vZ = z2 - z1;
gs_scalar wX = x2 - x1;
gs_scalar wZ = z2 - z1;
// Cross-Product of vectors to create normal vector
gs_scalar nX = (vY * wZ);
gs_scalar nY = (vZ * wX) - (vX * wZ);
gs_scalar nZ = -(vY * wX);
// Normalize result
gs_scalar mag = sqrt((nX*nX) + (nY*nY) + (nZ*nZ));
nX /= mag, nY /= mag, nZ /= mag;
// Create floor
d3d_model_primitive_begin(id, pr_trianglestrip);
d3d_model_vertex_normal_texture(id, x1, y1, z1, nX, nY, nZ, 0, 0);
d3d_model_vertex_normal_texture(id, x1, y2, z1, nX, nY, nZ, 0, vrep);
d3d_model_vertex_normal_texture(id, x2, y1, z2, nX, nY, nZ, hrep, 0);
d3d_model_vertex_normal_texture(id, x2, y2, z2, nX, nY, nZ, hrep, vrep);
d3d_model_primitive_end(id);
}
void d3d_model_cone(int id, gs_scalar x1, gs_scalar y1, gs_scalar z1, gs_scalar x2, gs_scalar y2, gs_scalar z2, gs_scalar hrep, gs_scalar vrep, bool closed, int steps)
{
steps = min(max(steps, 3), 48);
const double cx = (x1+x2)/2, cy = (y1+y2)/2, rx = (x2-x1)/2, ry = (y2-y1)/2, invstep = (1.0/steps)*hrep, pr = 2*M_PI/steps;
double a, px, py, tp;
int k = 0;
d3d_model_primitive_begin(id, pr_trianglefan);
d3d_model_vertex_normal_texture(id, cx, cy, z2, 0, 0, 1, 0, 0);
k++;
a = 0; px = cx+rx; py = cy; tp = 0;
for (int i = 0; i <= steps; i++) {
d3d_model_vertex_normal_texture(id, px, py, z1, cos(a), sin(a), 0, tp, vrep);
k++; a += pr; px = cx+cos(a)*rx; py = cy+sin(a)*ry; tp += invstep;
}
d3d_model_primitive_end(id);
if (closed) {
d3d_model_primitive_begin(id, pr_trianglefan);
d3d_model_vertex_normal_texture(id, cx, cy, z1, 0, 0, -1, 0, vrep);
k++;
tp = 0;
for (int i = 0; i <= steps + 1; i++) {
d3d_model_vertex_normal_texture(id, px, py, z1, 0, 0, -1, tp, 0);
k++; a -= pr; px = cx+cos(a)*rx; py = cy+sin(a)*ry; tp += invstep;
}
d3d_model_primitive_end(id);
}
}
void d3d_model_torus(int id, gs_scalar x1, gs_scalar y1, gs_scalar z1, gs_scalar hrep, gs_scalar vrep, int csteps, int tsteps, double radius, double tradius)
{
double TWOPI = 2 * (double)M_PI;
for (int i = 0; i < csteps; i++) {
d3d_model_primitive_begin(id, pr_trianglestrip);
for (int j = 0; j <= tsteps; j++) {
for (int k = 1; k >= 0; k--) {
double s = (i + k) % csteps + 0.5;
double t = j % tsteps;
double x = (radius + tradius * cos(s * TWOPI / csteps)) * cos(t * TWOPI / tsteps);
double y = (radius + tradius * cos(s * TWOPI / csteps)) * sin(t * TWOPI / tsteps);
double z = tradius * sin(s * TWOPI / csteps);
double u = ((i + k) / (float)csteps) * hrep;
double v = (j / (float)tsteps) * vrep;
gs_scalar nX = cos(s * TWOPI / csteps) * cos(t * TWOPI / tsteps);
gs_scalar nY = cos(s * TWOPI / csteps) * sin(t * TWOPI / tsteps);
gs_scalar nZ = sin(s * TWOPI / csteps);
d3d_model_vertex_normal_texture(id, x1 + x, y1 + y, z1 + z, nX, nY, nZ, u, v);
}
}
d3d_model_primitive_end(id);
}
}
void d3d_model_cylinder(int id, gs_scalar x1, gs_scalar y1, gs_scalar z1, gs_scalar x2, gs_scalar y2, gs_scalar z2, gs_scalar hrep, gs_scalar vrep, bool closed, int steps)
{
float v[100][3];
float t[100][3];
steps = min(max(steps, 3), 48); // i think 48 should be circle_presicion
const double cx = (x1+x2)/2, cy = (y1+y2)/2, rx = (x2-x1)/2, ry = (y2-y1)/2, invstep = (1.0/steps)*hrep, pr = 2*M_PI/steps;
double a, px, py, tp;
int k;
a = 0; px = cx+rx; py = cy; tp = 0; k = 0;
d3d_model_primitive_begin(id, pr_trianglestrip);
for (int i = 0; i <= steps; i++) {
v[k][0] = px; v[k][1] = py; v[k][2] = z2;
t[k][0] = tp; t[k][1] = 0;
d3d_model_vertex_normal_texture(id, px, py, z2, cos(a), sin(a), 0, tp, 0);
k++;
v[k][0] = px; v[k][1] = py; v[k][2] = z1;
t[k][0] = tp; t[k][1] = vrep;
d3d_model_vertex_normal_texture(id, px, py, z1, cos(a), sin(a), 0, tp, vrep);
k++; a += pr; px = cx+cos(a)*rx; py = cy+sin(a)*ry; tp += invstep;
}
d3d_model_primitive_end(id);
if (closed) {
// BOTTOM
d3d_model_primitive_begin(id, pr_trianglefan);
v[k][0] = cx; v[k][1] = cy; v[k][2] = z1;
t[k][0] = 0; t[k][1] = vrep;
d3d_model_vertex_normal_texture(id, cx, cy, z1, 0, 0, -1, 0, vrep);
k++;
for (int i = steps*2; i >= 0; i-=2) {
d3d_model_vertex_normal_texture(id, v[i+1][0], v[i+1][1], v[i+1][2], 0, 0, -1, t[i][0], t[i][1]);
}
d3d_model_primitive_end(id);
// TOP
d3d_model_primitive_begin(id, pr_trianglefan);
v[k][0] = cx; v[k][1] = cy; v[k][2] = z2;
t[k][0] = 0; t[k][1] = vrep;
d3d_model_vertex_normal_texture(id, cx, cy, z2, 0, 0, 1, 0, vrep);
k++;
for (int i = 0; i <= steps*2; i+=2) {
d3d_model_vertex_normal_texture(id, v[i][0], v[i][1], v[i][2], 0, 0, 1, t[i][0], t[i][1]);
}
d3d_model_primitive_end(id);
}
}
void d3d_vertex_normal_texture(gs_scalar x, gs_scalar y, gs_scalar z, gs_scalar nx, gs_scalar ny, gs_scalar nz, gs_scalar tx, gs_scalar ty)
{
d3d_model_vertex_normal_texture(draw_get_batch_stream(), x, y, z, nx, ny, nz, tx, ty);
}
void d3d_vertex_normal_texture(gs_scalar x, gs_scalar y, gs_scalar z, gs_scalar nx, gs_scalar ny, gs_scalar nz, gs_scalar tx, gs_scalar ty)
{
d3d_model_vertex_normal_texture(d3ddev->GetShapesModel(), x, y, z, nx, ny, nz, tx, ty);
}
void d3d_model_block(int id, gs_scalar x1, gs_scalar y1, gs_scalar z1, gs_scalar x2, gs_scalar y2, gs_scalar z2, gs_scalar hrep, gs_scalar vrep, bool closed)
{
//NOTE: This is the fastest way to batch cubes with uninterpolated normals thanks to my model batching, still slower than a triangle strip with interpolated normals
//however.
// Negative X
d3d_model_primitive_begin( id, pr_trianglefan );
d3d_model_vertex_normal_texture( id, x1,y1,z1, -1,0,0, 0,1 );
d3d_model_vertex_normal_texture( id, x1,y1,z2, -1,0,0, 0,0 );
d3d_model_vertex_normal_texture( id, x1,y2,z2, -1,0,0, 1,0 );
d3d_model_vertex_normal_texture( id, x1,y2,z1, -1,0,0, 1,1 );
d3d_model_primitive_end(id);
// Positive X
d3d_model_primitive_begin( id, pr_trianglefan );
d3d_model_vertex_normal_texture( id, x2,y1,z1, 1,0,0, 1,1 );
d3d_model_vertex_normal_texture( id, x2,y2,z1, 1,0,0, 0,1 );
d3d_model_vertex_normal_texture( id, x2,y2,z2, 1,0,0, 0,0 );
d3d_model_vertex_normal_texture( id, x2,y1,z2, 1,0,0, 1,0 );
d3d_model_primitive_end( id );
// Negative Y
d3d_model_primitive_begin( id, pr_trianglefan );
d3d_model_vertex_normal_texture( id, x1,y1,z1, 0,-1,0, 0,1 );
d3d_model_vertex_normal_texture( id, x2,y1,z1, 0,-1,0, 1,1 );
d3d_model_vertex_normal_texture( id, x2,y1,z2, 0,-1,0, 1,0 );
d3d_model_vertex_normal_texture( id, x1,y1,z2, 0,-1,0, 0,0 );
d3d_model_primitive_end( id );
// Positive Y
d3d_model_primitive_begin( id, pr_trianglefan );
d3d_model_vertex_normal_texture( id, x1,y2,z1, 0,1,0, 1,1 );
d3d_model_vertex_normal_texture( id, x1,y2,z2, 0,1,0, 1,0 );
d3d_model_vertex_normal_texture( id, x2,y2,z2, 0,1,0, 0,0 );
d3d_model_vertex_normal_texture( id, x2,y2,z1, 0,1,0, 0,1 );
d3d_model_primitive_end( id );
if (closed) {
// Negative Z
d3d_model_primitive_begin( id, pr_trianglefan );
d3d_model_vertex_normal_texture( id, x1,y1,z1, 0,0,-1, 0,0 );
d3d_model_vertex_normal_texture( id, x1,y2,z1, 0,0,-1, 0,1 );
d3d_model_vertex_normal_texture( id, x2,y2,z1, 0,0,-1, 1,1 );
d3d_model_vertex_normal_texture( id, x2,y1,z1, 0,0,-1, 1,0 );
d3d_model_primitive_end( id );
// Positive Z
d3d_model_primitive_begin( id, pr_trianglefan );
d3d_model_vertex_normal_texture( id, x1,y1,z2, 0,0,1, 0,0 );
d3d_model_vertex_normal_texture( id, x2,y1,z2, 0,0,1, 1,0 );
d3d_model_vertex_normal_texture( id, x2,y2,z2, 0,0,1, 1,1 );
d3d_model_vertex_normal_texture( id, x1,y2,z2, 0,0,1, 0,1 );
d3d_model_primitive_end( id );
}
}
void d3d_model_ellipsoid(int id, gs_scalar x1, gs_scalar y1, gs_scalar z1, gs_scalar x2, gs_scalar y2, gs_scalar z2, gs_scalar hrep, gs_scalar vrep, int steps)
{
float v[277][3];
float n[277][3];
float t[277][3];
steps = min(max(steps, 3), 24);
const int zsteps = ceil(steps/2);
const double cx = (x1+x2)/2, cy = (y1+y2)/2, cz = (z1+z2)/2, rx = (x2-x1)/2, ry = (y2-y1)/2, rz = (z2-z1)/2, invstep = (1.0/steps)*hrep, invstep2 = (1.0/zsteps)*vrep, pr = 2*M_PI/steps, qr = M_PI/zsteps;
double a, b, px, py, pz, tp, tzp, cosb;
double cosx[25], siny[25], txp[25];
a = pr; tp = 0;
for (int i = 0; i <= steps; i++) {
cosx[i] = cos(a)*rx; siny[i] = sin(a)*ry;
txp[i] = tp;
a += pr; tp += invstep;
}
int k = 0, kk;
// BOTTOM
d3d_model_primitive_begin(id, pr_trianglefan);
v[k][0] = cx; v[k][1] = cy; v[k][2] = cz - rz;
n[k][0] = 0; n[k][1] = 0; n[k][2] = -1;
t[k][0] = 0; t[k][1] = vrep;
d3d_model_vertex_normal_texture(id, cx, cy, cz - rz, 0, 0, -1, 0, vrep);
k++;
b = qr-M_PI/2;
cosb = cos(b);
pz = rz*sin(b);
tzp = vrep-invstep2;
px = cx+rx*cosb; py = cy;
for (int i = 0; i <= steps; i++) {
v[k][0] = px; v[k][1] = py; v[k][2] = cz + pz;
n[k][0] = cosx[i]; n[k][1] = -siny[i]; n[k][2] = cosb;
t[k][0] = txp[i]; t[k][1] = tzp;
d3d_model_vertex_normal_texture(id, px, py, cz + pz, cosx[i], -siny[i], sin(b), txp[i], tzp);
k++; px = cx+cosx[i]*cosb; py = cy-siny[i]*cosb;
}
d3d_model_primitive_end(id);
// SIDES
for (int ii = 0; ii < zsteps - 2; ii++) {
b += qr;
cosb = cos(b);
pz = rz*sin(b);
tzp -= invstep2;
d3d_model_primitive_begin(id, pr_trianglestrip);
px = cx+rx*cosb; py = cy;
for (int i = 0; i <= steps; i++) {
kk = k - steps - 1;
d3d_model_vertex_normal_texture(id, v[kk][0], v[kk][1], v[kk][2], n[kk][0], n[kk][1], n[kk][2], t[kk][0], t[kk][1]);
v[k][0] = px; v[k][1] = py; v[k][2] = cz + pz;
n[k][0] = cosx[i]; n[k][1] = -siny[i]; n[k][2] = sin(b);
t[k][0] = txp[i]; t[k][1] = tzp;
d3d_model_vertex_normal_texture(id, px, py, cz + pz, cosx[i], -siny[i], sin(b), txp[i], tzp);
k++; px = cx+cosx[i]*cosb; py = cy-siny[i]*cosb;
}
d3d_model_primitive_end(id);
}
// TOP
d3d_model_primitive_begin(id, pr_trianglefan);
v[k][0] = cx; v[k][1] = cy; v[k][2] = cz + rz;
n[k][0] = 0; n[k][1] = 0; n[k][2] = 1;
t[k][0] = 0; t[k][1] = 0;
d3d_model_vertex_normal_texture(id, cx, cy, cz + rz, 0, 0, 1, 0, 0);
k++;
for (int i = k - 2; i >= k - steps - 2; i--) {
d3d_model_vertex_normal_texture(id, v[i][0], v[i][1], v[i][2], n[i][0], n[i][1], n[i][2], t[i][0], t[i][1]);
}
d3d_model_primitive_end(id);
}
