Michael Fabain Dirks
310 lines
7.9 KiB
C++
310 lines
7.9 KiB
C++
|
|
#include "std.h"
|
|
#include "md2rep.h"
|
|
#include "md2norms.h"
|
|
|
|
extern gxRuntime *gx_runtime;
|
|
extern gxGraphics *gx_graphics;
|
|
|
|
static Vector *normals = 0;
|
|
static float tex_coords[2][2] = { {0,0},{0,0} };
|
|
|
|
#pragma pack( push,1 )
|
|
|
|
struct md2_header {
|
|
int magic;
|
|
int version;
|
|
int skinWidth;
|
|
int skinHeight;
|
|
int frameSize;
|
|
int numSkins;
|
|
int numVertices;
|
|
int numTexCoords;
|
|
int numTriangles;
|
|
int numGlCommands;
|
|
int numFrames;
|
|
int offsetSkins;
|
|
int offsetTexCoords;
|
|
int offsetTriangles;
|
|
int offsetFrames;
|
|
int offsetGlCommands;
|
|
int offsetEnd;
|
|
};
|
|
|
|
struct md2_uv {
|
|
short u, v;
|
|
};
|
|
|
|
struct md2_vert {
|
|
unsigned char x, y, z, n;
|
|
};
|
|
|
|
struct md2_tri {
|
|
unsigned short verts[3], uvs[3];
|
|
};
|
|
|
|
#pragma pack( pop )
|
|
|
|
struct t_vert {
|
|
unsigned short i, uv;
|
|
bool operator<(const t_vert &t)const {
|
|
return memcmp(&i, &t.i, 4) < 0;
|
|
}
|
|
};
|
|
|
|
struct t_tri {
|
|
unsigned short verts[3];
|
|
};
|
|
|
|
MD2Rep::MD2Rep(const string &f) :
|
|
mesh(0), n_verts(0), n_tris(0), n_frames(0) {
|
|
|
|
filebuf in;
|
|
md2_header header;
|
|
|
|
if (!in.open(f.c_str(), ios_base::in | ios_base::binary)) return;
|
|
if (in.sgetn((char*)&header, sizeof(header)) != sizeof(header)) return;
|
|
if (header.magic != '2PDI' || header.version != 8) return;
|
|
|
|
n_frames = header.numFrames;
|
|
n_tris = header.numTriangles;
|
|
|
|
//read in tex coords
|
|
vector<md2_uv> md2_uvs;
|
|
md2_uvs.resize(header.numTexCoords);
|
|
in.pubseekpos(header.offsetTexCoords);
|
|
in.sgetn((char*)(&md2_uvs.begin()[0]), header.numTexCoords * sizeof(md2_uv));
|
|
|
|
//read in triangles
|
|
vector<md2_tri> md2_tris;
|
|
md2_tris.resize(n_tris);
|
|
in.pubseekpos(header.offsetTriangles);
|
|
in.sgetn((char*)(&md2_tris.begin()[0]), n_tris * sizeof(md2_tri));
|
|
|
|
vector<t_tri> t_tris;
|
|
vector<t_vert> t_verts;
|
|
map<t_vert, int> t_map;
|
|
|
|
int k;
|
|
for (k = 0; k < n_tris; ++k) {
|
|
t_tri tr;
|
|
for (int j = 0; j < 3; ++j) {
|
|
t_vert t;
|
|
t.i = md2_tris[k].verts[j];
|
|
t.uv = md2_tris[k].uvs[j];
|
|
map<t_vert, int>::iterator it = t_map.find(t);
|
|
if (it == t_map.end()) {
|
|
//create new vert
|
|
tr.verts[j] = t_map[t] = t_verts.size();
|
|
t_verts.push_back(t);
|
|
//add UVs
|
|
VertexUV uv;
|
|
uv.u = md2_uvs[t.uv].u / (float)(header.skinWidth);
|
|
uv.v = md2_uvs[t.uv].v / (float)(header.skinHeight);
|
|
uvs.push_back(uv);
|
|
} else {
|
|
//reuse vert
|
|
tr.verts[j] = it->second;
|
|
}
|
|
}
|
|
t_tris.push_back(tr);
|
|
}
|
|
n_verts = t_verts.size();
|
|
|
|
frames.resize(n_frames);
|
|
in.pubseekpos(header.offsetFrames);
|
|
|
|
vector<md2_vert> md2_verts;
|
|
md2_verts.resize(header.numVertices);
|
|
|
|
//read in frames
|
|
for (k = 0; k < n_frames; ++k) {
|
|
char t_buff[16];
|
|
Frame *fr = &frames[k];
|
|
in.sgetn((char*)&fr->scale, 12);
|
|
in.sgetn((char*)&fr->trans, 12);
|
|
in.sgetn(t_buff, 16);
|
|
|
|
fr->scale = Vector(fr->scale.y, fr->scale.z, fr->scale.x);
|
|
fr->trans = Vector(fr->trans.y, fr->trans.z, fr->trans.x);
|
|
|
|
//read vertices
|
|
in.sgetn((char*)&md2_verts.begin()[0], header.numVertices * sizeof(md2_vert));
|
|
|
|
fr->verts.resize(n_verts);
|
|
for (int j = 0; j < n_verts; ++j) {
|
|
Vertex *v = &fr->verts[j];
|
|
const t_vert &tv = t_verts[j];
|
|
const md2_vert &mv = md2_verts[tv.i];
|
|
v->x = mv.y;
|
|
v->y = mv.z;
|
|
v->z = mv.x;
|
|
v->n = mv.n;
|
|
box.update(Vector(v->x, v->y, v->z) * fr->scale + fr->trans);
|
|
}
|
|
}
|
|
|
|
//create mesh and setup tris
|
|
mesh = gx_graphics->createMesh(n_verts, n_tris, 0);
|
|
mesh->lock(true);
|
|
for (k = 0; k < n_tris; ++k) {
|
|
const t_tri &t = t_tris[k];
|
|
mesh->setTriangle(k, t.verts[0], t.verts[2], t.verts[1]);
|
|
}
|
|
mesh->unlock();
|
|
|
|
//build normals
|
|
if (!normals) {
|
|
normals = (Vector*)md2norms;
|
|
for (int k = 0; k < sizeof(md2norms) / 12; ++k) {
|
|
normals[k] = Vector(normals[k].y, normals[k].z, normals[k].x);
|
|
}
|
|
}
|
|
}
|
|
|
|
MD2Rep::~MD2Rep() {
|
|
if (mesh) gx_graphics->freeMesh(mesh);
|
|
}
|
|
|
|
/*
|
|
void MD2Rep::render( Vert *v,int frame ){
|
|
|
|
const Frame &frame_a=frames[frame];
|
|
const Vertex *v_a=frame_a.verts.begin();
|
|
const Vector scale_a=frame_a.scale,trans_a=frame_a.trans;
|
|
|
|
for( int k=0;k<n_verts;++v,++v_a,++k ){
|
|
v->coords=Vector( v_a->x*scale_a.x+trans_a.x,v_a->y*scale_a.y+trans_a.y,v_a->z*scale_a.z+trans_a.z );
|
|
v->normal=normals[ v_a->n ];
|
|
}
|
|
}
|
|
*/
|
|
|
|
void MD2Rep::render(Vert *v, int frame, float time) {
|
|
|
|
const Frame &frame_b = frames[frame];
|
|
const Vertex *v_b = (Vertex*)(&frame_b.verts.begin()[0]);
|
|
const Vector scale_b = frame_b.scale, trans_b = frame_b.trans;
|
|
|
|
for (int k = 0; k < n_verts; ++v, ++v_b, ++k) {
|
|
|
|
const Vector t_b(v_b->x*scale_b.x + trans_b.x, v_b->y*scale_b.y + trans_b.y, v_b->z*scale_b.z + trans_b.z);
|
|
const Vector &n_b = normals[v_b->n];
|
|
|
|
v->coords += (t_b - v->coords)*time;
|
|
v->normal += (n_b - v->normal)*time;
|
|
}
|
|
}
|
|
|
|
void MD2Rep::render(Vert *v, int render_a, int render_b, float render_t) {
|
|
const Frame &frame_a = frames[render_a];
|
|
const Vector scale_a = frame_a.scale, trans_a = frame_a.trans;
|
|
|
|
const Frame &frame_b = frames[render_b];
|
|
const Vector scale_b = frame_b.scale, trans_b = frame_b.trans;
|
|
|
|
const Vertex *v_a = (Vertex*)(&frame_a.verts.begin()[0]);
|
|
const Vertex *v_b = (Vertex*)(&frame_b.verts.begin()[0]);
|
|
|
|
for (int k = 0; k < n_verts; ++v, ++v_a, ++v_b, ++k) {
|
|
|
|
const Vector t_a(v_a->x*scale_a.x + trans_a.x, v_a->y*scale_a.y + trans_a.y, v_a->z*scale_a.z + trans_a.z);
|
|
const Vector t_b(v_b->x*scale_b.x + trans_b.x, v_b->y*scale_b.y + trans_b.y, v_b->z*scale_b.z + trans_b.z);
|
|
v->coords = (t_b - t_a)*render_t + t_a;
|
|
|
|
const Vector &n_a = normals[v_a->n];
|
|
const Vector &n_b = normals[v_b->n];
|
|
v->normal = (n_b - n_a)*render_t + n_a;
|
|
}
|
|
}
|
|
|
|
/*
|
|
void MD2Rep::render( Vert *v,const Vert *v_a,const Vert *v_b,float render_t ){
|
|
for( int k=0;k<n_verts;++v,++v_a,++v_b,++k ){
|
|
v->coords=(v_b->coords-v_a->coords)*render_t+v_a->coords;
|
|
v->normal=(v_b->normal-v_a->normal)*render_t+v_a->normal;
|
|
}
|
|
}
|
|
*/
|
|
|
|
void MD2Rep::render(Model *model, int render_a, int render_b, float render_t) {
|
|
const Frame &frame_a = frames[render_a];
|
|
const Vector scale_a = frame_a.scale, trans_a = frame_a.trans;
|
|
|
|
const Frame &frame_b = frames[render_b];
|
|
const Vector scale_b = frame_b.scale, trans_b = frame_b.trans;
|
|
|
|
const VertexUV *uv = (VertexUV*)&uvs.begin()[0];
|
|
const Vertex *v_a = (Vertex*)(&frame_a.verts.begin()[0]);
|
|
const Vertex *v_b = (Vertex*)(&frame_b.verts.begin()[0]);
|
|
|
|
mesh->lock(true);
|
|
for (int k = 0; k < n_verts; ++uv, ++v_a, ++v_b, ++k) {
|
|
|
|
const Vector t_a(v_a->x*scale_a.x + trans_a.x, v_a->y*scale_a.y + trans_a.y, v_a->z*scale_a.z + trans_a.z);
|
|
const Vector t_b(v_b->x*scale_b.x + trans_b.x, v_b->y*scale_b.y + trans_b.y, v_b->z*scale_b.z + trans_b.z);
|
|
const Vector t((t_b - t_a)*render_t + t_a);
|
|
|
|
const Vector &n_a = normals[v_a->n];
|
|
const Vector &n_b = normals[v_b->n];
|
|
const Vector n((n_b - n_a)*render_t + n_a);
|
|
|
|
tex_coords[0][0] = uv->u;
|
|
tex_coords[0][1] = uv->v;
|
|
|
|
mesh->setVertex(k, &t.x, &n.x, tex_coords);
|
|
}
|
|
mesh->unlock();
|
|
|
|
model->enqueue(mesh, 0, n_verts, 0, n_tris);
|
|
}
|
|
/*
|
|
void MD2Rep::render( Model *model,const Vert *v_a,const Vert *v_b,float render_t ){
|
|
|
|
const VertexUV *uv=uvs.begin();
|
|
|
|
mesh->lock();
|
|
for( int k=0;k<n_verts;++uv,++v_a,++v_b,++k ){
|
|
|
|
const Vector t( ( v_b->coords-v_a->coords)*render_t+v_a->coords );
|
|
const Vector n( ( v_b->normal-v_a->normal)*render_t+v_a->normal );
|
|
|
|
tex_coords[0]=uv->u;
|
|
tex_coords[1]=uv->v;
|
|
|
|
mesh->setVertex( k,&t.x,&n.x,tex_coords );
|
|
}
|
|
mesh->unlock();
|
|
|
|
model->enqueue( mesh,0,n_verts,0,n_tris );
|
|
}
|
|
*/
|
|
|
|
void MD2Rep::render(Model *model, const Vert *v_a, int render_b, float render_t) {
|
|
|
|
const Frame &frame_b = frames[render_b];
|
|
const Vector scale_b = frame_b.scale, trans_b = frame_b.trans;
|
|
|
|
const VertexUV *uv = (VertexUV*)&uvs.begin()[0];
|
|
const Vertex *v_b = (Vertex*)&frame_b.verts.begin()[0];
|
|
|
|
mesh->lock(true);
|
|
for (int k = 0; k < n_verts; ++uv, ++v_a, ++v_b, ++k) {
|
|
|
|
const Vector t_b(v_b->x*scale_b.x + trans_b.x, v_b->y*scale_b.y + trans_b.y, v_b->z*scale_b.z + trans_b.z);
|
|
const Vector t((t_b - v_a->coords)*render_t + v_a->coords);
|
|
|
|
const Vector &n_b = normals[v_b->n];
|
|
const Vector n((n_b - v_a->normal)*render_t + v_a->normal);
|
|
|
|
tex_coords[0][0] = uv->u;
|
|
tex_coords[0][1] = uv->v;
|
|
|
|
mesh->setVertex(k, &t.x, &n.x, tex_coords);
|
|
}
|
|
mesh->unlock();
|
|
|
|
model->enqueue(mesh, 0, n_verts, 0, n_tris);
|
|
}
|
|
|