static void BuildTriangleFanSet(GF_Mesh *mesh, GF_Node *_coords, GF_Node *_color, GF_Node *_txcoords, GF_Node *_normal, MFInt32 *fanList, MFInt32 *indices, Bool normalPerVertex, Bool ccw, Bool solid)
{
u32 fan, i, cur_idx, generate_tx;
GF_Vertex vx;
GenMFField *cols;
MFVec3f *norms;
MFVec2f *txcoords;
Bool rgba_col;
SFColorRGBA rgba;
X_Coordinate *c = (X_Coordinate *) _coords;
mesh_reset(mesh);
cols = NULL;
rgba_col = 0;
if (_color) {
if (gf_node_get_tag(_color)==TAG_X3D_ColorRGBA) {
rgba_col = 1;
cols = (GenMFField *) & ((X_ColorRGBA *) _color)->color;
} else {
cols = (GenMFField *) & ((M_Color *) _color)->color;
}
}
norms = NULL;
if (_normal) norms = & ((M_Normal *)_normal)->vector;
txcoords = NULL;
generate_tx = 0;
/*FIXME - this can't work with multitexturing*/
if (_txcoords) {
switch (gf_node_get_tag(_txcoords)) {
case TAG_X3D_TextureCoordinate:
case TAG_MPEG4_TextureCoordinate:
txcoords = & ((M_TextureCoordinate *)_txcoords)->point;
break;
case TAG_X3D_TextureCoordinateGenerator:
generate_tx = 1;
break;
}
}
memset(&vx, 0, sizeof(GF_Vertex));
cur_idx = 0;
for (fan= 0; fan<fanList->count; fan++) {
u32 start_idx = mesh->v_count;
if (fanList->vals[fan] < 3) continue;
for (i=0; i<(u32) fanList->vals[fan]; i++) {
u32 idx;
if (indices) {
if (indices->count<=cur_idx) return;
if (indices->vals[cur_idx] == -1) {
GF_LOG(GF_LOG_ERROR, GF_LOG_COMPOSE, ("[X3D] bad formatted X3D triangle set\n"));
return;
}
idx = indices->vals[cur_idx];
} else {
idx = cur_idx;
}
vx.pos = c->point.vals[idx];
if (cols && (cols->count>idx)) {
if (rgba_col) {
rgba = ((MFColorRGBA *)cols)->vals[idx];
} else {
rgba = gf_sg_sfcolor_to_rgba( ((MFColor *)cols)->vals[idx]);
}
vx.color = MESH_MAKE_COL(rgba);
}
/*according to X3D spec, if normal field is set, it is ALWAYS as normal per vertex*/
if (norms && (norms->count>idx)) {
SFVec3f n = norms->vals[idx];
gf_vec_norm(&n);
MESH_SET_NORMAL(vx, n);
}
if (txcoords) {
if (txcoords->count>idx) vx.texcoords = txcoords->vals[idx];
}
/*X3D says nothing about default texture mapping here...*/
else if (!generate_tx) {
switch (idx%3) {
case 2:
vx.texcoords.x = FIX_ONE;
vx.texcoords.y = 0;
break;
case 1:
vx.texcoords.x = FIX_ONE/2;
vx.texcoords.y = FIX_ONE;
break;
case 0:
vx.texcoords.x = 0;
vx.texcoords.y = 0;
break;
}
}
mesh_set_vertex_vx(mesh, &vx);
cur_idx ++;
if (indices) {
if (cur_idx>=indices->count) break;
} else if (cur_idx==c->point.count) break;
if (i>1) {
mesh_set_vertex_vx(mesh, &mesh->vertices[start_idx]);
mesh_set_vertex_vx(mesh, &vx);
}
}
for (i=start_idx; i<mesh->v_count; i+=3) {
mesh_set_triangle(mesh, i, i+1, i+2);
}
/*get rid of -1*/
if (indices && (cur_idx<indices->count) && (indices->vals[cur_idx]==-1)) cur_idx++;
}
if (generate_tx) mesh_generate_tex_coords(mesh, _txcoords);
if (cols) mesh->flags |= MESH_HAS_COLOR;
if (rgba_col) mesh->flags |= MESH_HAS_ALPHA;
if (!ccw) mesh->flags |= MESH_IS_CW;
if (!_normal) {
mesh_recompute_normals(mesh);
if (normalPerVertex) {
u32 cur_face = 0;
for (fan=0; fan<fanList->count; fan++) {
SFVec3f n_0, n_1, n_avg, n_tot;
u32 nb_face, start_face;
if (fanList->vals[fan] < 3) continue;
if (fanList->vals[fan] == 3) {
cur_face++;
continue;
}
start_face = cur_face;
/*first face normal*/
MESH_GET_NORMAL(n_0, mesh->vertices[mesh->indices[3*cur_face]]);
n_tot = n_0;
cur_face++;
nb_face = fanList->vals[fan] - 2;
for (i=1; i<nb_face; i++) {
MESH_GET_NORMAL(n_1, mesh->vertices[mesh->indices[3*cur_face + 1]]);
gf_vec_add(n_avg, n_0, n_1);
gf_vec_norm(&n_avg);
MESH_SET_NORMAL(mesh->vertices[mesh->indices[3*cur_face + 1]], n_avg);
gf_vec_add(n_tot, n_tot, n_1);
n_0 = n_1;
cur_face++;
}
/*and assign center normal*/
gf_vec_norm(&n_tot);
for (i=0; i<nb_face; i++) {
MESH_SET_NORMAL(mesh->vertices[mesh->indices[3*(i+start_face)]], n_tot);
}
}
}
}
if (solid) mesh->flags |= MESH_IS_SOLID;
mesh_update_bounds(mesh);
gf_mesh_build_aabbtree(mesh);
}
static void DrawBackground2D_3D(M_Background2D *bck, Background2DStack *st, GF_TraverseState *tr_state)
{
GF_Matrix mx;
Bool use_texture;
use_texture = back_texture_enabled(bck, &st->txh);
visual_3d_set_background_state(tr_state->visual, 1);
visual_3d_matrix_push(tr_state->visual);
/* visual_3d_set_matrix_mode(tr_state->visual, V3D_MATRIX_TEXTURE);
gf_sc_texture_get_transform(&st->txh, NULL, &mx, 0);
visual_3d_matrix_load(tr_state->visual, mx.m);
*/
visual_3d_set_matrix_mode(tr_state->visual, V3D_MATRIX_MODELVIEW);
/*little opt: if we clear the main visual clear it entirely */
if (! tr_state->is_layer) {
visual_3d_clear(tr_state->visual, bck->backColor, FIX_ONE);
if (!use_texture) {
visual_3d_matrix_pop(tr_state->visual);
visual_3d_set_background_state(tr_state->visual, 0);
return;
}
/*we need a hack here because main vp is always traversed before main background, and in the case of a
2D viewport it modifies the modelview matrix, which we don't want ...*/
visual_3d_matrix_reset(tr_state->visual);
}
if (!use_texture || (!tr_state->is_layer && st->txh.transparent) ) visual_3d_set_material_2d(tr_state->visual, bck->backColor, FIX_ONE);
if (use_texture) {
visual_3d_set_state(tr_state->visual, V3D_STATE_COLOR, ! tr_state->is_layer);
tr_state->mesh_num_textures = gf_sc_texture_enable(&st->txh, NULL);
if (!tr_state->mesh_num_textures) visual_3d_set_material_2d(tr_state->visual, bck->backColor, FIX_ONE);
}
/*create mesh object if needed*/
if (!st->mesh) {
st->mesh = new_mesh();
mesh_set_vertex(st->mesh, -B2D_PLANE_HSIZE, -B2D_PLANE_HSIZE, 0, 0, 0, FIX_ONE, 0, 0);
mesh_set_vertex(st->mesh, B2D_PLANE_HSIZE, -B2D_PLANE_HSIZE, 0, 0, 0, FIX_ONE, FIX_ONE, 0);
mesh_set_vertex(st->mesh, B2D_PLANE_HSIZE, B2D_PLANE_HSIZE, 0, 0, 0, FIX_ONE, FIX_ONE, FIX_ONE);
mesh_set_vertex(st->mesh, -B2D_PLANE_HSIZE, B2D_PLANE_HSIZE, 0, 0, 0, FIX_ONE, 0, FIX_ONE);
mesh_set_triangle(st->mesh, 0, 1, 2); mesh_set_triangle(st->mesh, 0, 2, 3);
st->mesh->flags |= MESH_IS_2D;
}
gf_mx_init(mx);
if (tr_state->camera->is_3D) {
Fixed sx, sy;
/*reset matrix*/
visual_3d_matrix_reset(tr_state->visual);
sx = sy = 2 * gf_mulfix(gf_tan(tr_state->camera->fieldOfView/2), tr_state->camera->z_far);
if (tr_state->camera->width > tr_state->camera->height) {
sx = gf_muldiv(sx, tr_state->camera->width, tr_state->camera->height);
} else {
sy = gf_muldiv(sy, tr_state->camera->height, tr_state->camera->width);
}
gf_mx_add_scale(&mx, sx, sy, FIX_ONE);
#ifdef GPAC_FIXED_POINT
gf_mx_add_translation(&mx, 0, 0, - (tr_state->camera->z_far/100)*99);
#else
gf_mx_add_translation(&mx, 0, 0, -0.995f*tr_state->camera->z_far);
#endif
} else {
gf_mx_add_scale(&mx, tr_state->bbox.max_edge.x - tr_state->bbox.min_edge.x,
tr_state->bbox.max_edge.y - tr_state->bbox.min_edge.y,
FIX_ONE);
/*when in layer2D, DON'T MOVE BACKGROUND TO ZFAR*/
if (!tr_state->is_layer) {
Fixed tr;
#ifdef GPAC_FIXED_POINT
tr = -(tr_state->camera->z_far/100)*99;
#else
tr = -0.999f*tr_state->camera->z_far;
#endif
if (!tr_state->camera->is_3D) tr = -tr;
gf_mx_add_translation(&mx, 0, 0, tr);
}
}
visual_3d_matrix_add(tr_state->visual, mx.m);
visual_3d_mesh_paint(tr_state, st->mesh);
if (tr_state->mesh_num_textures) {
gf_sc_texture_disable(&st->txh);
tr_state->mesh_num_textures = 0;
}
visual_3d_matrix_pop(tr_state->visual);
visual_3d_set_background_state(tr_state->visual, 0);
}
static void BuildTriangleStripSet(GF_Mesh *mesh, GF_Node *_coords, GF_Node *_color, GF_Node *_txcoords, GF_Node *_normal, MFInt32 *stripList, MFInt32 *indices, Bool normalPerVertex, Bool ccw, Bool solid)
{
u32 strip, i, cur_idx, generate_tx;
GF_Vertex vx;
GenMFField *cols;
MFVec3f *norms;
MFVec2f *txcoords;
Bool rgba_col;
SFColorRGBA rgba;
X_Coordinate *c = (X_Coordinate *) _coords;
mesh_reset(mesh);
cols = NULL;
rgba_col = 0;
if (_color) {
if (gf_node_get_tag(_color)==TAG_X3D_ColorRGBA) {
rgba_col = 1;
cols = (GenMFField *) & ((X_ColorRGBA *) _color)->color;
} else {
cols = (GenMFField *) & ((M_Color *) _color)->color;
}
}
norms = NULL;
if (_normal) norms = & ((M_Normal *)_normal)->vector;
txcoords = NULL;
generate_tx = 0;
/*FIXME - this can't work with multitexturing*/
if (_txcoords) {
switch (gf_node_get_tag(_txcoords)) {
case TAG_X3D_TextureCoordinate:
case TAG_MPEG4_TextureCoordinate:
txcoords = & ((M_TextureCoordinate *)_txcoords)->point;
break;
case TAG_X3D_TextureCoordinateGenerator:
generate_tx = 1;
break;
}
}
memset(&vx, 0, sizeof(GF_Vertex));
cur_idx = 0;
for (strip= 0; strip<stripList->count; strip++) {
u32 start_idx = mesh->v_count;
if (stripList->vals[strip] < 3) continue;
for (i=0; i<(u32) stripList->vals[strip]; i++) {
u32 idx;
if (indices) {
if (indices->count<=cur_idx) return;
if (indices->vals[cur_idx] == -1) {
GF_LOG(GF_LOG_ERROR, GF_LOG_COMPOSE, ("[X3D] bad formatted X3D triangle strip\n"));
return;
}
idx = indices->vals[cur_idx];
} else {
idx = cur_idx;
}
vx.pos = c->point.vals[idx];
if (cols && (cols->count>idx)) {
if (rgba_col) {
rgba = ((MFColorRGBA *)cols)->vals[idx];
} else {
rgba = gf_sg_sfcolor_to_rgba( ((MFColor *)cols)->vals[idx]);
}
vx.color = MESH_MAKE_COL(rgba);
}
/*according to X3D spec, if normal field is set, it is ALWAYS as normal per vertex*/
if (norms && (norms->count>idx)) {
SFVec3f n = norms->vals[idx];
gf_vec_norm(&n);
MESH_SET_NORMAL(vx, n);
}
if (txcoords) {
if (txcoords->count>idx) vx.texcoords = txcoords->vals[idx];
}
/*X3D says nothing about default texture mapping here...*/
else if (!generate_tx) {
switch (idx%3) {
case 2:
vx.texcoords.x = FIX_ONE;
vx.texcoords.y = 0;
break;
case 1:
vx.texcoords.x = FIX_ONE/2;
vx.texcoords.y = FIX_ONE;
break;
case 0:
vx.texcoords.x = 0;
vx.texcoords.y = 0;
break;
}
}
if (i>2) {
/*duplicate last 2 vertices (we really need independent vertices to handle normals per face)*/
mesh_set_vertex_vx(mesh, &mesh->vertices[mesh->v_count-2]);
mesh_set_vertex_vx(mesh, &mesh->vertices[mesh->v_count-2]);
}
mesh_set_vertex_vx(mesh, &vx);
cur_idx ++;
if (indices) {
if (cur_idx>=indices->count) break;
} else if (cur_idx==c->point.count) break;
}
for (i=start_idx; i<mesh->v_count; i+=3) {
mesh_set_triangle(mesh, i, i+1, i+2);
}
/*get rid of -1*/
if (indices && (cur_idx<indices->count) && (indices->vals[cur_idx]==-1)) cur_idx++;
}
if (generate_tx) mesh_generate_tex_coords(mesh, _txcoords);
if (cols) mesh->flags |= MESH_HAS_COLOR;
if (rgba_col) mesh->flags |= MESH_HAS_ALPHA;
if (_normal) {
if (!ccw) mesh->flags |= MESH_IS_CW;
}
/*reorder everything to CCW*/
else {
u32 cur_face = 0;
mesh_recompute_normals(mesh);
for (i=0; i<mesh->i_count; i+= 3) {
if ((ccw && (cur_face%2)) || (!ccw && !(cur_face%2))) {
SFVec3f v;
u32 idx;
MESH_GET_NORMAL(v, mesh->vertices[mesh->indices[i]]);
v = gf_vec_scale(v,-1);
MESH_SET_NORMAL(mesh->vertices[mesh->indices[i]], v);
mesh->vertices[mesh->indices[i+1]].normal = mesh->vertices[mesh->indices[i]].normal;
mesh->vertices[mesh->indices[i+2]].normal = mesh->vertices[mesh->indices[i]].normal;
idx = mesh->indices[i+2];
mesh->indices[i+2] = mesh->indices[i+1];
mesh->indices[i+1] = idx;
}
cur_face++;
}
if (normalPerVertex) {
cur_face = 0;
for (strip=0; strip<stripList->count; strip++) {
SFVec3f n_0, n_1, n_2, n_avg;
u32 nb_face;
if (stripList->vals[strip] < 3) continue;
if (stripList->vals[strip] <= 3) {
cur_face ++;
continue;
}
/*first face normal*/
MESH_GET_NORMAL(n_0, mesh->vertices[mesh->indices[3*cur_face]]);
/*second face normal*/
MESH_GET_NORMAL(n_1, mesh->vertices[mesh->indices[3*(cur_face+1)]]);
gf_vec_add(n_avg, n_0, n_1);
gf_vec_norm(&n_avg);
/*assign to second point of first face and first of second face*/
MESH_SET_NORMAL(mesh->vertices[mesh->indices[3*cur_face+1]], n_avg);
MESH_SET_NORMAL(mesh->vertices[mesh->indices[3*(cur_face+1)]], n_avg);
nb_face = stripList->vals[strip] - 2;
cur_face++;
for (i=1; i<nb_face-1; i++) {
/*get normal (use second pt of current face since first has been updated)*/
MESH_GET_NORMAL(n_2, mesh->vertices[mesh->indices[3*cur_face + 1]]);
gf_vec_add(n_avg, n_0, n_1);
gf_vec_add(n_avg, n_avg, n_2);
gf_vec_norm(&n_avg);
/*last of prev face*/
MESH_SET_NORMAL(mesh->vertices[mesh->indices[3*cur_face - 1]], n_avg);
/*second of current face*/
mesh->vertices[mesh->indices[3*cur_face + 1]].normal = mesh->vertices[mesh->indices[3*cur_face - 1]].normal;
/*first of next face*/
mesh->vertices[mesh->indices[3*cur_face + 3]].normal = mesh->vertices[mesh->indices[3*cur_face - 1]].normal;
n_0 = n_1;
n_1 = n_2;
cur_face++;
}
}
}
}
if (solid) mesh->flags |= MESH_IS_SOLID;
mesh_update_bounds(mesh);
gf_mesh_build_aabbtree(mesh);
}
static void BuildTriangleSet(GF_Mesh *mesh, GF_Node *_coords, GF_Node *_color, GF_Node *_txcoords, GF_Node *_normal, MFInt32 *indices, Bool normalPerVertex, Bool ccw, Bool solid)
{
u32 i, count, generate_tx;
GF_Vertex vx;
GenMFField *cols;
MFVec3f *norms;
MFVec2f *txcoords;
Bool rgba_col;
SFColorRGBA rgba;
X_Coordinate *c = (X_Coordinate *) _coords;
mesh_reset(mesh);
cols = NULL;
rgba_col = 0;
if (_color) {
if (gf_node_get_tag(_color)==TAG_X3D_ColorRGBA) {
rgba_col = 1;
cols = (GenMFField *) & ((X_ColorRGBA *) _color)->color;
} else {
cols = (GenMFField *) & ((M_Color *) _color)->color;
}
}
norms = NULL;
if (_normal) norms = & ((M_Normal *)_normal)->vector;
txcoords = NULL;
generate_tx = 0;
/*FIXME - this can't work with multitexturing*/
if (_txcoords) {
switch (gf_node_get_tag(_txcoords)) {
case TAG_X3D_TextureCoordinate:
case TAG_MPEG4_TextureCoordinate:
txcoords = & ((M_TextureCoordinate *)_txcoords)->point;
break;
case TAG_X3D_TextureCoordinateGenerator:
generate_tx = 1;
break;
}
}
if (indices) {
count = indices->count;
} else {
count = c->point.count;
}
while (count%3) count--;
memset(&vx, 0, sizeof(GF_Vertex));
for (i=0; i<count; i++) {
u32 idx;
if (indices) {
if (indices->count<=i) return;
idx = indices->vals[i];
} else {
idx = i;
}
vx.pos = c->point.vals[idx];
if (cols && (cols->count>idx)) {
if (rgba_col) {
rgba = ((MFColorRGBA *)cols)->vals[idx];
} else {
rgba = gf_sg_sfcolor_to_rgba( ((MFColor *)cols)->vals[idx]);
}
vx.color = MESH_MAKE_COL(rgba);
}
if (norms && (norms->count>idx)) {
SFVec3f n = norms->vals[idx];
gf_vec_norm(&n);
MESH_SET_NORMAL(vx, n);
}
if (txcoords) {
if (txcoords->count>idx) vx.texcoords = txcoords->vals[idx];
}
/*X3D says nothing about default texture mapping here...*/
else if (!generate_tx) {
switch (i%3) {
case 2:
vx.texcoords.x = FIX_ONE;
vx.texcoords.y = 0;
break;
case 1:
vx.texcoords.x = FIX_ONE/2;
vx.texcoords.y = FIX_ONE;
break;
case 0:
vx.texcoords.x = 0;
vx.texcoords.y = 0;
break;
}
}
mesh_set_vertex_vx(mesh, &vx);
}
for (i=0; i<mesh->v_count; i+=3) {
mesh_set_triangle(mesh, i, i+1, i+2);
}
if (generate_tx) mesh_generate_tex_coords(mesh, _txcoords);
if (!ccw) mesh->flags |= MESH_IS_CW;
if (cols) mesh->flags |= MESH_HAS_COLOR;
if (rgba_col) mesh->flags |= MESH_HAS_ALPHA;
if (!_normal) mesh_recompute_normals(mesh);
if (solid) mesh->flags |= MESH_IS_SOLID;
mesh_update_bounds(mesh);
gf_mesh_build_aabbtree(mesh);
}
static void TraverseTriangleSet2D(GF_Node *node, void *rs, Bool is_destroy)
{
DrawableContext *ctx;
Drawable *stack = (Drawable *)gf_node_get_private(node);
GF_TraverseState *tr_state = (GF_TraverseState *)rs;
if (is_destroy) {
drawable_node_del(node);
return;
}
triangleset2d_check_changes(node, stack, tr_state);
switch (tr_state->traversing_mode) {
#ifndef GPAC_DISABLE_3D
case TRAVERSE_DRAW_3D:
if (!stack->mesh) {
SFColorRGBA col;
u32 i, count, idx;
GF_Vertex v1, v2, v3;
X_TriangleSet2D *p = (X_TriangleSet2D *)node;
stack->mesh = new_mesh();
stack->mesh->mesh_type = MESH_TRIANGLES;
col.red = col.green = col.blue = 0;
col.alpha = FIX_ONE;
v1.color = MESH_MAKE_COL(col);
v1.normal.x = v1.normal.y = 0;
v1.normal.z = MESH_NORMAL_UNIT;
v1.pos.z = 0;
v3 = v2 = v1;
count = p->vertices.count;
while (count%3) count--;
for (i=0; i<count; i+=3) {
idx = stack->mesh->v_count;
v1.pos.x = p->vertices.vals[i].x;
v1.pos.y = p->vertices.vals[i].y;
v2.pos.x = p->vertices.vals[i+1].x;
v2.pos.y = p->vertices.vals[i+1].y;
v3.pos.x = p->vertices.vals[i+2].x;
v3.pos.y = p->vertices.vals[i+2].y;
mesh_set_vertex_vx(stack->mesh, &v1);
mesh_set_vertex_vx(stack->mesh, &v2);
mesh_set_vertex_vx(stack->mesh, &v3);
gf_vec_diff(v2.pos, v2.pos, v1.pos);
gf_vec_diff(v3.pos, v3.pos, v1.pos);
v1.pos = gf_vec_cross(v2.pos, v3.pos);
if (v1.pos.z<0) {
mesh_set_triangle(stack->mesh, idx, idx+2, idx+1);
} else {
mesh_set_triangle(stack->mesh, idx, idx+1, idx+2);
}
}
stack->mesh->flags |= MESH_IS_2D;
mesh_update_bounds(stack->mesh);
}
visual_3d_draw_2d(stack, tr_state);
return;
#endif
case TRAVERSE_GET_BOUNDS:
gf_path_get_bounds(stack->path, &tr_state->bounds);
return;
case TRAVERSE_PICK:
vrml_drawable_pick(stack, tr_state);
return;
case TRAVERSE_SORT:
#ifndef GPAC_DISABLE_3D
if (tr_state->visual->type_3d) return;
#endif
ctx = drawable_init_context_mpeg4(stack, tr_state);
if (!ctx) return;
drawable_finalize_sort(ctx, tr_state, NULL);
return;
}
}
void compositor_init_background(GF_Compositor *compositor, GF_Node *node)
{
BackgroundStack *ptr;
GF_SAFEALLOC(ptr, BackgroundStack);
ptr->compositor = compositor;
ptr->reg_stacks = gf_list_new();
((M_Background *)node)->on_set_bind = back_set_bind;
gf_mx_init(ptr->current_mx);
/*build texture cube*/
ptr->front_mesh = new_mesh();
mesh_set_vertex(ptr->front_mesh, -PLANE_HSIZE, -PLANE_HSIZE, -PLANE_HSIZE_LOW, 0, 0, FIX_ONE, 0, 0);
mesh_set_vertex(ptr->front_mesh, PLANE_HSIZE, -PLANE_HSIZE, -PLANE_HSIZE_LOW, 0, 0, FIX_ONE, FIX_ONE, 0);
mesh_set_vertex(ptr->front_mesh, PLANE_HSIZE, PLANE_HSIZE, -PLANE_HSIZE_LOW, 0, 0, FIX_ONE, FIX_ONE, FIX_ONE);
mesh_set_vertex(ptr->front_mesh, -PLANE_HSIZE, PLANE_HSIZE, -PLANE_HSIZE_LOW, 0, 0, FIX_ONE, 0, FIX_ONE);
mesh_set_triangle(ptr->front_mesh, 0, 1, 2);
mesh_set_triangle(ptr->front_mesh, 0, 2, 3);
mesh_update_bounds(ptr->front_mesh);
ptr->back_mesh = new_mesh();
mesh_set_vertex(ptr->back_mesh, -PLANE_HSIZE, -PLANE_HSIZE, PLANE_HSIZE_LOW, 0, 0, -FIX_ONE, FIX_ONE, 0);
mesh_set_vertex(ptr->back_mesh, PLANE_HSIZE, -PLANE_HSIZE, PLANE_HSIZE_LOW, 0, 0, -FIX_ONE, 0, 0);
mesh_set_vertex(ptr->back_mesh, PLANE_HSIZE, PLANE_HSIZE, PLANE_HSIZE_LOW, 0, 0, -FIX_ONE, 0, FIX_ONE);
mesh_set_vertex(ptr->back_mesh, -PLANE_HSIZE, PLANE_HSIZE, PLANE_HSIZE_LOW, 0, 0, -FIX_ONE, FIX_ONE, FIX_ONE);
mesh_set_triangle(ptr->back_mesh, 0, 1, 2);
mesh_set_triangle(ptr->back_mesh, 0, 2, 3);
mesh_update_bounds(ptr->back_mesh);
ptr->top_mesh = new_mesh();
mesh_set_vertex(ptr->top_mesh, -PLANE_HSIZE, PLANE_HSIZE_LOW, PLANE_HSIZE, 0, -FIX_ONE, 0, 0, 0);
mesh_set_vertex(ptr->top_mesh, PLANE_HSIZE, PLANE_HSIZE_LOW, PLANE_HSIZE, 0, -FIX_ONE, 0, 0, FIX_ONE);
mesh_set_vertex(ptr->top_mesh, PLANE_HSIZE, PLANE_HSIZE_LOW, -PLANE_HSIZE, 0, -FIX_ONE, 0, FIX_ONE, FIX_ONE);
mesh_set_vertex(ptr->top_mesh, -PLANE_HSIZE, PLANE_HSIZE_LOW, -PLANE_HSIZE, 0, -FIX_ONE, 0, FIX_ONE, 0);
mesh_set_triangle(ptr->top_mesh, 0, 1, 2);
mesh_set_triangle(ptr->top_mesh, 0, 2, 3);
mesh_update_bounds(ptr->top_mesh);
ptr->bottom_mesh = new_mesh();
mesh_set_vertex(ptr->bottom_mesh, -PLANE_HSIZE, -PLANE_HSIZE_LOW, -PLANE_HSIZE, 0, FIX_ONE, 0, FIX_ONE, FIX_ONE);
mesh_set_vertex(ptr->bottom_mesh, PLANE_HSIZE, -PLANE_HSIZE_LOW, -PLANE_HSIZE, 0, FIX_ONE, 0, FIX_ONE, 0);
mesh_set_vertex(ptr->bottom_mesh, PLANE_HSIZE, -PLANE_HSIZE_LOW, PLANE_HSIZE, 0, FIX_ONE, 0, 0, 0);
mesh_set_vertex(ptr->bottom_mesh, -PLANE_HSIZE, -PLANE_HSIZE_LOW, PLANE_HSIZE, 0, FIX_ONE, 0, 0, FIX_ONE);
mesh_set_triangle(ptr->bottom_mesh, 0, 1, 2);
mesh_set_triangle(ptr->bottom_mesh, 0, 2, 3);
mesh_update_bounds(ptr->bottom_mesh);
ptr->left_mesh = new_mesh();
mesh_set_vertex(ptr->left_mesh, -PLANE_HSIZE_LOW, -PLANE_HSIZE, -PLANE_HSIZE, FIX_ONE, 0, 0, FIX_ONE, 0);
mesh_set_vertex(ptr->left_mesh, -PLANE_HSIZE_LOW, -PLANE_HSIZE, PLANE_HSIZE, FIX_ONE, 0, 0, 0, 0);
mesh_set_vertex(ptr->left_mesh, -PLANE_HSIZE_LOW, PLANE_HSIZE, PLANE_HSIZE, FIX_ONE, 0, 0, 0, FIX_ONE);
mesh_set_vertex(ptr->left_mesh, -PLANE_HSIZE_LOW, PLANE_HSIZE, -PLANE_HSIZE, FIX_ONE, 0, 0, FIX_ONE, FIX_ONE);
mesh_set_triangle(ptr->left_mesh, 0, 1, 2);
mesh_set_triangle(ptr->left_mesh, 0, 2, 3);
mesh_update_bounds(ptr->left_mesh);
ptr->right_mesh = new_mesh();
mesh_set_vertex(ptr->right_mesh, PLANE_HSIZE_LOW, -PLANE_HSIZE, PLANE_HSIZE, -FIX_ONE, 0, 0, FIX_ONE, 0);
mesh_set_vertex(ptr->right_mesh, PLANE_HSIZE_LOW, -PLANE_HSIZE, -PLANE_HSIZE, -FIX_ONE, 0, 0, 0, 0);
mesh_set_vertex(ptr->right_mesh, PLANE_HSIZE_LOW, PLANE_HSIZE, -PLANE_HSIZE, -FIX_ONE, 0, 0, 0, FIX_ONE);
mesh_set_vertex(ptr->right_mesh, PLANE_HSIZE_LOW, PLANE_HSIZE, PLANE_HSIZE, -FIX_ONE, 0, 0, FIX_ONE, FIX_ONE);
mesh_set_triangle(ptr->right_mesh, 0, 1, 2);
mesh_set_triangle(ptr->right_mesh, 0, 2, 3);
mesh_update_bounds(ptr->right_mesh);
gf_sc_texture_setup(&ptr->txh_back, compositor, node);
ptr->txh_back.update_texture_fcnt = UpdateBackgroundTexture;
gf_sc_texture_setup(&ptr->txh_front, compositor, node);
ptr->txh_front.update_texture_fcnt = UpdateBackgroundTexture;
gf_sc_texture_setup(&ptr->txh_top, compositor, node);
ptr->txh_top.update_texture_fcnt = UpdateBackgroundTexture;
gf_sc_texture_setup(&ptr->txh_bottom, compositor, node);
ptr->txh_bottom.update_texture_fcnt = UpdateBackgroundTexture;
gf_sc_texture_setup(&ptr->txh_left, compositor, node);
ptr->txh_left.update_texture_fcnt = UpdateBackgroundTexture;
gf_sc_texture_setup(&ptr->txh_right, compositor, node);
ptr->txh_right.update_texture_fcnt = UpdateBackgroundTexture;
gf_node_set_private(node, ptr);
gf_node_set_callback_function(node, TraverseBackground);
}
static void back_build_dome(GF_Mesh *mesh, MFFloat *angles, MFColor *color, Bool ground_dome)
{
u32 i, j, last_idx, ang_idx, new_idx;
Bool pad;
u32 step_div_h;
GF_Vertex vx;
SFColorRGBA start_col, end_col, fcol;
Fixed start_angle, next_angle, angle, r, frac, first_angle;
start_angle = 0;
mesh_reset(mesh);
start_col.red = start_col.green = start_col.blue = 0;
end_col = start_col;
if (color->count) {
COL_TO_RGBA(start_col, color->vals[0]);
end_col = start_col;
if (color->count>1) COL_TO_RGBA(end_col, color->vals[1]);
}
start_col.alpha = end_col.alpha = FIX_ONE;
vx.texcoords.x = vx.texcoords.y = 0;
vx.color = MESH_MAKE_COL(start_col);
vx.pos.x = vx.pos.z = 0;
vx.pos.y = FIX_ONE;
vx.normal.x = vx.normal.z = 0;
vx.normal.y = -MESH_NORMAL_UNIT;
mesh_set_vertex_vx(mesh, &vx);
last_idx = 0;
ang_idx = 0;
pad = 1;
next_angle = first_angle = 0;
if (angles->count) {
next_angle = angles->vals[0];
first_angle = 7*next_angle/8;
pad = 0;
}
step_div_h = DOME_STEP_H;
i=0;
if (ground_dome) {
step_div_h *= 2;
i=1;
}
for (; i<DOME_STEP_V; i++) {
if (ground_dome) {
angle = first_angle + (i * (GF_PI2-first_angle) / DOME_STEP_V);
} else {
angle = (i * GF_PI / DOME_STEP_V);
}
/*switch cols*/
if (angle >= next_angle) {
if (ang_idx+1<=angles->count) {
start_angle = next_angle;
next_angle = angles->vals[ang_idx+1];
if (next_angle>GF_PI) next_angle=GF_PI;
start_col = end_col;
ang_idx++;
if (ang_idx+1<color->count) {
COL_TO_RGBA(end_col, color->vals[ang_idx+1]);
} else {
pad = 1;
}
} else {
if (ground_dome) break;
pad = 1;
}
}
if (pad) {
fcol = end_col;
} else {
frac = gf_divfix(angle - start_angle, next_angle - start_angle) ;
fcol.red = gf_mulfix(end_col.red - start_col.red, frac) + start_col.red;
fcol.green = gf_mulfix(end_col.green - start_col.green, frac) + start_col.green;
fcol.blue = gf_mulfix(end_col.blue - start_col.blue, frac) + start_col.blue;
fcol.alpha = FIX_ONE;
}
vx.color = MESH_MAKE_COL(fcol);
vx.pos.y = gf_sin(GF_PI2 - angle);
r = gf_sqrt(FIX_ONE - gf_mulfix(vx.pos.y, vx.pos.y));
new_idx = mesh->v_count;
for (j = 0; j < step_div_h; j++) {
SFVec3f n;
Fixed lon = 2 * GF_PI * j / step_div_h;
vx.pos.x = gf_mulfix(gf_sin(lon), r);
vx.pos.z = gf_mulfix(gf_cos(lon), r);
n = gf_vec_scale(vx.pos, FIX_ONE /*-FIX_ONE*/);
gf_vec_norm(&n);
MESH_SET_NORMAL(vx, n);
mesh_set_vertex_vx(mesh, &vx);
if (j) {
if (i>1) {
mesh_set_triangle(mesh, last_idx+j, new_idx+j, new_idx+j-1);
mesh_set_triangle(mesh, last_idx+j, new_idx+j-1, last_idx+j-1);
} else {
mesh_set_triangle(mesh, 0, new_idx+j, new_idx+j-1);
}
}
}
if (i>1) {
mesh_set_triangle(mesh, last_idx, new_idx, new_idx+step_div_h-1);
mesh_set_triangle(mesh, last_idx, new_idx+step_div_h-1, last_idx+step_div_h-1);
} else {
mesh_set_triangle(mesh, 0, new_idx, new_idx+step_div_h-1);
}
last_idx = new_idx;
}
if (!ground_dome) {
new_idx = mesh->v_count;
vx.pos.x = vx.pos.z = 0;
vx.pos.y = -FIX_ONE;
vx.normal.x = vx.normal.z = 0;
vx.normal.y = MESH_NORMAL_UNIT;
mesh_set_vertex_vx(mesh, &vx);
for (j=1; j < step_div_h; j++) {
mesh_set_triangle(mesh, last_idx+j-1, last_idx+j, new_idx);
}
mesh_set_triangle(mesh, last_idx+step_div_h-1, last_idx, new_idx);
}
mesh->flags |= MESH_HAS_COLOR | MESH_NO_TEXTURE;
mesh_update_bounds(mesh);
}
