ENTRYPOINT void
init_ball (ModeInfo *mi)
{
ball_configuration *bp;
int wire = MI_IS_WIREFRAME(mi);
MI_INIT (mi, bps);
bp = &bps[MI_SCREEN(mi)];
bp->glx_context = init_GL(mi);
if (! wire)
build_texture (mi);
reshape_ball (mi, MI_WIDTH(mi), MI_HEIGHT(mi));
bp->th = 180 - frand(360);
if (MI_COUNT(mi) < 10)
MI_COUNT(mi) = 10;
if (MI_COUNT(mi) > 200)
MI_COUNT(mi) = 200;
{
double spin_speed = 0.1;
double wander_speed = 0.003;
double spin_accel = 1;
bp->rot = make_rotator (do_spin ? spin_speed : 0,
do_spin ? spin_speed : 0,
do_spin ? spin_speed : 0,
spin_accel,
do_wander ? wander_speed : 0,
False);
bp->trackball = gltrackball_init (True);
}
build_ball (mi);
if (!wire)
{
GLfloat color[4] = {0.5, 0.5, 0.5, 1};
GLfloat cspec[4] = {1, 1, 1, 1};
static const GLfloat shiny = 10;
static GLfloat pos0[4] = { 0.5, -1, -0.5, 0};
static GLfloat pos1[4] = {-0.75, -1, 0, 0};
static GLfloat amb[4] = {0, 0, 0, 1};
static GLfloat dif[4] = {1, 1, 1, 1};
static GLfloat spc[4] = {1, 1, 1, 1};
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glEnable(GL_LIGHT1);
glEnable(GL_DEPTH_TEST);
glEnable(GL_CULL_FACE);
color[0] += frand(0.2);
color[1] += frand(0.2);
color[2] += frand(0.2);
cspec[0] -= frand(0.2);
cspec[1] -= frand(0.2);
cspec[2] -= frand(0.2);
glLightfv(GL_LIGHT0, GL_POSITION, pos0);
glLightfv(GL_LIGHT0, GL_AMBIENT, amb);
glLightfv(GL_LIGHT0, GL_DIFFUSE, dif);
glLightfv(GL_LIGHT0, GL_SPECULAR, spc);
glLightfv(GL_LIGHT1, GL_POSITION, pos1);
glLightfv(GL_LIGHT1, GL_AMBIENT, amb);
glLightfv(GL_LIGHT1, GL_DIFFUSE, dif);
glLightfv(GL_LIGHT1, GL_SPECULAR, spc);
glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, color);
glMaterialfv (GL_FRONT, GL_SPECULAR, cspec);
glMateriali (GL_FRONT, GL_SHININESS, shiny);
}
}
//
// MQO
//
void build_from_mqo(
mqo_reader::document_type& doc, float scale, const Color& color) {
// マテリアル
for (const auto& ms: doc.materials) {
Piece m;
m.vbo = 0;
m.ibo = 0;
#ifdef JSTEXTURE
m.texture = "";
#else
m.texture = 0;
#endif
m.color.rgba[0] = ms.color.red;
m.color.rgba[1] = ms.color.green;
m.color.rgba[2] = ms.color.blue;
m.color.rgba[3] = ms.color.alpha;
if (ms.texture != "") {
#ifdef JSTEXTURE
m.texture = ms.texture;
loadTexture(m.texture.c_str());
#else
m.texture = build_texture(ms.texture.c_str());
#endif
}
pieces_.push_back(m);
}
{
// default material
Piece m;
m.vbo = 0;
m.ibo = 0;
#ifdef JSTEXTURE
m.texture = "";
#else
m.texture = 0;
#endif
m.color = color;
pieces_.push_back(m);
}
// 頂点, 面
for (const auto& pair: doc.objects) {
const mqo_reader::object_type& obj = pair.second;
// dictionary:
// (source vertex index, uv ) => destination vertex index
struct VertexKey {
int index;
float u;
float v;
VertexKey(){}
VertexKey(int aindex, float au, float av)
: index(aindex), u(au), v(av) {}
bool operator<(const VertexKey& a) const {
if (index < a.index) { return true; }
if (a.index < index) { return false; }
if (u < a.u) { return true; }
if (a.u < u) { return false; }
return v < a.v;
}
};
std::vector<std::map<VertexKey, int>> used_vertices;
used_vertices.resize(pieces_.size());
// マテリアルごとに使用頂点を分類
for (const auto& face: obj.faces) {
int material_index = face.material_index;
if (material_index == -1) {
material_index = int(pieces_.size() - 1);
}
int i0 = face.vertex_indices[0];
int i1 = face.vertex_indices[1];
int i2 = face.vertex_indices[2];
std::map<VertexKey, int>& c = used_vertices[material_index];
c[VertexKey(i0, face.uv[0].u, face.uv[0].v)] = -1;
c[VertexKey(i1, face.uv[1].u, face.uv[1].v)] = -1;
c[VertexKey(i2, face.uv[2].u, face.uv[2].v)] = -1;
}
// マテリアルごとに使われている頂点を追加
size_t n = pieces_.size();
for (size_t i = 0 ; i < n ; i++) {
Piece& m = pieces_[i];
std::map<VertexKey, int>& c = used_vertices[i];
int no = int(m.vertex_source.size());
for (auto& j: c) {
const auto& src = obj.vertices[j.first.index];
Piece::Vertex dst;
dst.position = Vector(
src.x * scale,
src.y * scale,
src.z * -scale);
dst.normal = Vector(0, 0, 0);
dst.diffuse = m.color;
dst.u = j.first.u;
dst.v = j.first.v;
m.vertex_source.push_back(dst);
j.second = no++;
}
}
// マテリアルごとに面を追加
for (const auto& face: obj.faces) {
int material_index = face.material_index;
if (material_index == -1) {
material_index = int(pieces_.size()- 1);
}
int i0 = face.vertex_indices[0];
int i1 = face.vertex_indices[1];
int i2 = face.vertex_indices[2];
std::map<VertexKey, int>& c = used_vertices[material_index];
int k0 = c[VertexKey(i0, face.uv[0].u, face.uv[0].v)];
int k1 = c[VertexKey(i1, face.uv[1].u, face.uv[1].v)];
int k2 = c[VertexKey(i2, face.uv[2].u, face.uv[2].v)];
Piece& m = pieces_[material_index];
m.index_source.push_back(k0);
m.index_source.push_back(k1);
m.index_source.push_back(k2);
Piece::Vertex& v0 = m.vertex_source[k0];
Piece::Vertex& v1 = m.vertex_source[k1];
Piece::Vertex& v2 = m.vertex_source[k2];
Vector normal = cross(
v1.position - v0.position,
v2.position - v0.position);
v0.normal += normal;
v1.normal += normal;
v2.normal += normal;
}
}
// 法線後処理
for (Piece& m: pieces_) {
for (auto& v: m.vertex_source) {
normalize_f(v.normal);
}
}
build_pieces();
}
