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godot/scene/resources/surface_tool.cpp

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/*************************************************************************/
/* surface_tool.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "surface_tool.h"
#define _VERTEX_SNAP 0.0001
#define EQ_VERTEX_DIST 0.00001
bool SurfaceTool::compare(const Vertex& p_a,const Vertex& p_b) const {
if (p_a.vertex.distance_to(p_b.vertex)>EQ_VERTEX_DIST)
return false;
if (format&Mesh::ARRAY_FORMAT_TEX_UV) {
if (p_a.uv.distance_to(p_b.uv)>EQ_VERTEX_DIST)
return false;
}
if (format&Mesh::ARRAY_FORMAT_TEX_UV2) {
if (p_a.uv2.distance_to(p_b.uv2)>EQ_VERTEX_DIST)
return false;
}
if (format&Mesh::ARRAY_FORMAT_NORMAL) {
if (p_a.normal.distance_to(p_b.normal)>EQ_VERTEX_DIST)
return false;
}
if (format&Mesh::ARRAY_FORMAT_TANGENT) {
if (p_a.binormal.distance_to(p_b.binormal)>EQ_VERTEX_DIST)
return false;
if (p_a.tangent.distance_to(p_b.tangent)>EQ_VERTEX_DIST)
return false;
}
if (format&Mesh::ARRAY_FORMAT_COLOR) {
if (p_a.color!=p_b.color)
return false;
}
if (format&Mesh::ARRAY_FORMAT_BONES) {
for(int i=0;i<4;i++) {
if (Math::abs(p_a.bones[i]-p_b.bones[i])>CMP_EPSILON)
return false;
}
}
if (format&Mesh::ARRAY_FORMAT_WEIGHTS) {
for(int i=0;i<4;i++) {
if (Math::abs(p_a.weights[i]-p_b.weights[i])>CMP_EPSILON)
return false;
}
}
return true;
}
void SurfaceTool::begin(Mesh::PrimitiveType p_primitive) {
clear();
primitive=p_primitive;
begun=true;
first=true;
}
void SurfaceTool::add_vertex( const Vector3& p_vertex) {
ERR_FAIL_COND(!begun);
Vertex vtx;
vtx.vertex=p_vertex;
vtx.color=last_color;
vtx.normal=last_normal;
vtx.uv=last_uv;
vtx.weights=last_weights;
vtx.bones=last_bones;
vtx.tangent=last_tangent.normal;
vtx.binormal=last_tangent.normal.cross(last_normal).normalized() * last_tangent.d;
vertex_array.push_back(vtx);
first=false;
format|=Mesh::ARRAY_FORMAT_VERTEX;
}
void SurfaceTool::add_color( Color p_color ) {
ERR_FAIL_COND(!begun);
ERR_FAIL_COND( !first && !(format&Mesh::ARRAY_FORMAT_COLOR));
format|=Mesh::ARRAY_FORMAT_COLOR;
last_color=p_color;
}
void SurfaceTool::add_normal( const Vector3& p_normal) {
ERR_FAIL_COND(!begun);
ERR_FAIL_COND( !first && !(format&Mesh::ARRAY_FORMAT_NORMAL));
format|=Mesh::ARRAY_FORMAT_NORMAL;
last_normal=p_normal;
}
void SurfaceTool::add_tangent( const Plane& p_tangent ) {
ERR_FAIL_COND(!begun);
ERR_FAIL_COND( !first && !(format&Mesh::ARRAY_FORMAT_TANGENT));
format|=Mesh::ARRAY_FORMAT_TANGENT;
last_tangent=p_tangent;
}
void SurfaceTool::add_uv( const Vector2& p_uv) {
ERR_FAIL_COND(!begun);
ERR_FAIL_COND( !first && !(format&Mesh::ARRAY_FORMAT_TEX_UV));
format|=Mesh::ARRAY_FORMAT_TEX_UV;
last_uv=p_uv;
}
void SurfaceTool::add_uv2( const Vector2& p_uv2) {
ERR_FAIL_COND(!begun);
ERR_FAIL_COND( !first && !(format&Mesh::ARRAY_FORMAT_TEX_UV2));
format|=Mesh::ARRAY_FORMAT_TEX_UV2;
last_uv2=p_uv2;
}
void SurfaceTool::add_bones( const Vector<int>& p_bones) {
ERR_FAIL_COND(!begun);
ERR_FAIL_COND(p_bones.size()!=4);
ERR_FAIL_COND( !first && !(format&Mesh::ARRAY_FORMAT_BONES));
format|=Mesh::ARRAY_FORMAT_BONES;
last_bones=p_bones;
}
void SurfaceTool::add_weights( const Vector<float>& p_weights) {
ERR_FAIL_COND(!begun);
ERR_FAIL_COND(p_weights.size()!=4);
ERR_FAIL_COND( !first && !(format&Mesh::ARRAY_FORMAT_WEIGHTS));
format|=Mesh::ARRAY_FORMAT_WEIGHTS;
last_weights=p_weights;
}
void SurfaceTool::add_index( int p_index) {
ERR_FAIL_COND(!begun);
format|=Mesh::ARRAY_FORMAT_INDEX;
index_array.push_back(p_index);
}
Ref<Mesh> SurfaceTool::commit(const Ref<Mesh>& p_existing) {
Ref<Mesh> mesh;
if (p_existing.is_valid())
mesh=p_existing;
else
mesh= Ref<Mesh>( memnew( Mesh ) );
int varr_len=vertex_array.size();
if (varr_len==0)
return mesh;
int surface = mesh->get_surface_count();
Array a;
a.resize(Mesh::ARRAY_MAX);
for (int i=0;i<Mesh::ARRAY_MAX;i++) {
switch(format&(1<<i)) {
case Mesh::ARRAY_FORMAT_VERTEX:
case Mesh::ARRAY_FORMAT_NORMAL: {
DVector<Vector3> array;
array.resize(varr_len);
DVector<Vector3>::Write w = array.write();
int idx=0;
for(List< Vertex >::Element *E=vertex_array.front();E;E=E->next(),idx++) {
const Vertex &v=E->get();
switch(i) {
case Mesh::ARRAY_VERTEX: {
w[idx]=v.vertex;
} break;
case Mesh::ARRAY_NORMAL: {
w[idx]=v.normal;
} break;
}
}
w=DVector<Vector3>::Write();
a[i]=array;
} break;
case Mesh::ARRAY_FORMAT_TEX_UV:
case Mesh::ARRAY_FORMAT_TEX_UV2: {
DVector<Vector2> array;
array.resize(varr_len);
DVector<Vector2>::Write w = array.write();
int idx=0;
for(List< Vertex >::Element *E=vertex_array.front();E;E=E->next(),idx++) {
const Vertex &v=E->get();
switch(i) {
case Mesh::ARRAY_TEX_UV: {
w[idx]=v.uv;
} break;
case Mesh::ARRAY_TEX_UV2: {
w[idx]=v.uv2;
} break;
}
}
w=DVector<Vector2>::Write();
a[i]=array;
} break;
case Mesh::ARRAY_FORMAT_TANGENT: {
DVector<float> array;
array.resize(varr_len*4);
DVector<float>::Write w = array.write();
int idx=0;
for(List< Vertex >::Element *E=vertex_array.front();E;E=E->next(),idx+=4) {
const Vertex &v=E->get();
w[idx+0]=v.tangent.x;
w[idx+1]=v.tangent.y;
w[idx+2]=v.tangent.z;
float d = v.binormal.dot(v.normal.cross(v.tangent));
w[idx+3]=d<0 ? -1 : 1;
}
w=DVector<float>::Write();
a[i]=array;
} break;
case Mesh::ARRAY_FORMAT_COLOR: {
DVector<Color> array;
array.resize(varr_len);
DVector<Color>::Write w = array.write();
int idx=0;
for(List< Vertex >::Element *E=vertex_array.front();E;E=E->next(),idx++) {
const Vertex &v=E->get();
w[idx]=v.color;
}
w=DVector<Color>::Write();
a[i]=array;
} break;
case Mesh::ARRAY_FORMAT_BONES:
case Mesh::ARRAY_FORMAT_WEIGHTS: {
DVector<float> array;
array.resize(varr_len*4);
DVector<float>::Write w = array.write();
int idx=0;
for(List< Vertex >::Element *E=vertex_array.front();E;E=E->next(),idx+=4) {
const Vertex &v=E->get();
for(int j=0;j<4;j++) {
switch(i) {
case Mesh::ARRAY_WEIGHTS: {
ERR_CONTINUE( v.weights.size()!=4 );
w[idx+j]=v.weights[j];
} break;
case Mesh::ARRAY_BONES: {
ERR_CONTINUE( v.bones.size()!=4 );
w[idx+j]=v.bones[j];
} break;
}
}
}
w=DVector<float>::Write();
a[i]=array;
} break;
case Mesh::ARRAY_FORMAT_INDEX: {
ERR_CONTINUE( index_array.size() ==0 );
DVector<int> array;
array.resize(index_array.size());
DVector<int>::Write w = array.write();
int idx=0;
for(List< int>::Element *E=index_array.front();E;E=E->next(),idx++) {
w[idx]=E->get();
}
w=DVector<int>::Write();
a[i]=array;
} break;
default: {}
}
}
mesh->add_surface(primitive,a);
if (material.is_valid())
mesh->surface_set_material(surface,material);
return mesh;
}
void SurfaceTool::index() {
#if 0
printf("indexing..\n");
ERR_FAIL_COND( format & Surface::ARRAY_FORMAT_INDEX ); // already indexed
index_array.clear();
DVector< Vertex > indexed_vertex_array;
int vertex_array_len = vertex_array.size();
vertex_array.read_lock();
const Vertex*vertex_array_ptr = vertex_array.read();
for (int i=0;i<vertex_array_len;i++) {
int index_pos=-1;
int indexed_vertex_array_len=indexed_vertex_array.size();
if (indexed_vertex_array_len) {
indexed_vertex_array.read_lock();
const Vertex* indexed_vertex_array_ptr=indexed_vertex_array.read();
for (int j=0;j<indexed_vertex_array_len;j++) {
if (vertex_array_ptr[i].same_as(indexed_vertex_array_ptr[j])) {
index_pos=j;
break;
}
}
indexed_vertex_array.read_unlock();
}
if (index_pos==-1) {
index_pos=indexed_vertex_array.size();
indexed_vertex_array.push_back(vertex_array_ptr[i]);
} else {
indexed_vertex_array.write_lock();
indexed_vertex_array.write()[index_pos].normal+=vertex_array_ptr[i].normal;
indexed_vertex_array.write()[index_pos].binormal+=vertex_array_ptr[i].binormal;
indexed_vertex_array.write()[index_pos].tangent+=vertex_array_ptr[i].tangent;
indexed_vertex_array.write_unlock();
}
index_array.push_back(index_pos);
}
int idxvertsize=indexed_vertex_array.size();
indexed_vertex_array.write_lock();
Vertex* idxvert=indexed_vertex_array.write();
for (int i=0;i<idxvertsize;i++) {
idxvert[i].normal.normalize();
idxvert[i].tangent.normalize();
idxvert[i].binormal.normalize();
}
indexed_vertex_array.write_unlock();
vertex_array.read_unlock();
format|=Surface::ARRAY_FORMAT_INDEX;
vertex_array=indexed_vertex_array;
printf("indexing.. end\n");
#endif
}
void SurfaceTool::deindex() {
}
void SurfaceTool::_create_list(const Ref<Mesh>& p_existing, int p_surface, List<Vertex> *r_vertex, List<int> *r_index, int& lformat) {
Array arr = p_existing->surface_get_arrays(p_surface);
ERR_FAIL_COND( arr.size() !=VS::ARRAY_MAX );
DVector<Vector3> varr = arr[VS::ARRAY_VERTEX];
DVector<Vector3> narr = arr[VS::ARRAY_NORMAL];
DVector<float> tarr = arr[VS::ARRAY_TANGENT];
DVector<Color> carr = arr[VS::ARRAY_COLOR];
DVector<Vector2> uvarr = arr[VS::ARRAY_TEX_UV];
DVector<Vector2> uv2arr = arr[VS::ARRAY_TEX_UV2];
DVector<int> barr = arr[VS::ARRAY_BONES];
DVector<float> warr = arr[VS::ARRAY_WEIGHTS];
int vc = varr.size();
if (vc==0)
return;
lformat=0;
DVector<Vector3>::Read rv;
if (varr.size()) {
lformat|=VS::ARRAY_FORMAT_VERTEX;
rv=varr.read();
}
DVector<Vector3>::Read rn;
if (narr.size()) {
lformat|=VS::ARRAY_FORMAT_NORMAL;
rn=narr.read();
}
DVector<float>::Read rt;
if (tarr.size()) {
lformat|=VS::ARRAY_FORMAT_TANGENT;
rt=tarr.read();
}
DVector<Color>::Read rc;
if (carr.size()) {
lformat|=VS::ARRAY_FORMAT_COLOR;
rc=carr.read();
}
DVector<Vector2>::Read ruv;
if (uvarr.size()) {
lformat|=VS::ARRAY_FORMAT_TEX_UV;
ruv=uvarr.read();
}
DVector<Vector2>::Read ruv2;
if (uv2arr.size()) {
lformat|=VS::ARRAY_FORMAT_TEX_UV2;
ruv2=uv2arr.read();
}
DVector<int>::Read rb;
if (barr.size()) {
lformat|=VS::ARRAY_FORMAT_BONES;
rb=barr.read();
}
DVector<float>::Read rw;
if (warr.size()) {
lformat|=VS::ARRAY_FORMAT_WEIGHTS;
rw=warr.read();
}
for(int i=0;i<vc;i++) {
Vertex v;
if (lformat&VS::ARRAY_FORMAT_VERTEX)
v.vertex=varr[i];
if (lformat&VS::ARRAY_FORMAT_NORMAL)
v.normal=narr[i];
if (lformat&VS::ARRAY_FORMAT_TANGENT) {
Plane p( tarr[i*4+0], tarr[i*4+1], tarr[i*4+2], tarr[i*4+3] );
v.tangent=p.normal;
v.binormal=p.normal.cross(last_normal).normalized() * p.d;
}
if (lformat&VS::ARRAY_FORMAT_COLOR)
v.color=carr[i];
if (lformat&VS::ARRAY_FORMAT_TEX_UV)
v.uv=uvarr[i];
if (lformat&VS::ARRAY_FORMAT_TEX_UV2)
v.uv2=uv2arr[i];
if (lformat&VS::ARRAY_FORMAT_BONES) {
Vector<int> b;
b.resize(4);
b[0]=barr[i*4+0];
b[1]=barr[i*4+1];
b[2]=barr[i*4+2];
b[3]=barr[i*4+3];
v.bones=b;
}
if (lformat&VS::ARRAY_FORMAT_WEIGHTS) {
Vector<float> w;
w.resize(4);
w[0]=warr[i*4+0];
w[1]=warr[i*4+1];
w[2]=warr[i*4+2];
w[3]=warr[i*4+3];
v.weights=w;
}
r_vertex->push_back(v);
}
//indices
DVector<int> idx= arr[VS::ARRAY_INDEX];
int is = idx.size();
if (is) {
lformat|=VS::ARRAY_FORMAT_INDEX;
DVector<int>::Read iarr=idx.read();
for(int i=0;i<is;i++) {
r_index->push_back(iarr[i]);
}
}
}
void SurfaceTool::create_from(const Ref<Mesh>& p_existing, int p_surface) {
clear();
primitive=p_existing->surface_get_primitive_type(p_surface);
_create_list(p_existing,p_surface,&vertex_array,&index_array,format);
}
void SurfaceTool::append_from(const Ref<Mesh>& p_existing, int p_surface,const Transform& p_xform) {
if (vertex_array.size()==0) {
primitive=p_existing->surface_get_primitive_type(p_surface);
format=0;
}
int nformat;
List<Vertex> nvertices;
List<int> nindices;
_create_list(p_existing,p_surface,&nvertices,&nindices,nformat);
format|=nformat;
int vfrom = vertex_array.size();
for(List<Vertex>::Element *E=nvertices.front();E;E=E->next()) {
Vertex v=E->get();
v.vertex=p_xform.xform(v.vertex);
if (nformat&VS::ARRAY_FORMAT_NORMAL) {
v.normal=p_xform.basis.xform(v.normal);
}
if (nformat&VS::ARRAY_FORMAT_TANGENT) {
v.tangent=p_xform.basis.xform(v.tangent);
v.binormal=p_xform.basis.xform(v.binormal);
}
vertex_array.push_back(v);
}
for(List<int>::Element *E=nindices.front();E;E=E->next()) {
int dst_index = E->get()+vfrom;
//if (dst_index <0 || dst_index>=vertex_array.size()) {
// print_line("invalid index!");
//}
index_array.push_back(dst_index);
}
if (index_array.size()%3)
print_line("IA not div of 3?");
}
void SurfaceTool::generate_tangents() {
ERR_FAIL_COND(!(format&Mesh::ARRAY_FORMAT_TEX_UV));
#if 0
int len=vertex_array.size();
vertex_array.write_lock();
Vertex *vertexptr=vertex_array.write();
for (int i=0;i<len/3;i++) {
Vector3 v1 = vertexptr[i*3+0].vertex;
Vector3 v2 = vertexptr[i*3+1].vertex;
Vector3 v3 = vertexptr[i*3+2].vertex;
Vector3 w1 = vertexptr[i*3+0].uv[0];
Vector3 w2 = vertexptr[i*3+1].uv[0];
Vector3 w3 = vertexptr[i*3+2].uv[0];
float x1 = v2.x - v1.x;
float x2 = v3.x - v1.x;
float y1 = v2.y - v1.y;
float y2 = v3.y - v1.y;
float z1 = v2.z - v1.z;
float z2 = v3.z - v1.z;
float s1 = w2.x - w1.x;
float s2 = w3.x - w1.x;
float t1 = w2.y - w1.y;
float t2 = w3.y - w1.y;
float r = (s1 * t2 - s2 * t1);
Vector3 binormal,tangent;
if (r==0) {
binormal=Vector3(0,0,0);
tangent=Vector3(0,0,0);
} else {
tangent = Vector3((t2 * x1 - t1 * x2) * r, (t2 * y1 - t1 * y2) * r,
(t2 * z1 - t1 * z2) * r);
binormal = Vector3((s1 * x2 - s2 * x1) * r, (s1 * y2 - s2 * y1) * r,
(s1 * z2 - s2 * z1) * r);
}
tangent.normalize();
binormal.normalize();
Vector3 normal=Plane( v1, v2, v3 ).normal;
Vector3 tangentp = tangent - normal * normal.dot( tangent );
Vector3 binormalp = binormal - normal * (normal.dot(binormal)) - tangent * (tangent.dot(binormal));
tangentp.normalize();
binormalp.normalize();
for (int j=0;j<3;j++) {
vertexptr[i*3+j].normal=normal;
vertexptr[i*3+j].binormal=binormalp;
vertexptr[i*3+j].tangent=tangentp;
}
}
format|=Surface::ARRAY_FORMAT_TANGENT;
printf("adding tangents to the format\n");
vertex_array.write_unlock();
#endif
}
void SurfaceTool::generate_flat_normals() {
}
void SurfaceTool::generate_smooth_normals() {
}
void SurfaceTool::set_material(const Ref<Material>& p_material) {
material=p_material;
}
void SurfaceTool::clear() {
begun=false;
primitive=Mesh::PRIMITIVE_LINES;
format=0;
last_bones.clear();;
last_weights.clear();
index_array.clear();
vertex_array.clear();
}
void SurfaceTool::_bind_methods() {
ObjectTypeDB::bind_method(_MD("begin","primitive"),&SurfaceTool::begin);
ObjectTypeDB::bind_method(_MD("add_vertex","vertex"),&SurfaceTool::add_vertex);
ObjectTypeDB::bind_method(_MD("add_color","color"),&SurfaceTool::add_color);
ObjectTypeDB::bind_method(_MD("add_normal","normal"),&SurfaceTool::add_normal);
ObjectTypeDB::bind_method(_MD("add_tangent","tangent"),&SurfaceTool::add_tangent);
ObjectTypeDB::bind_method(_MD("add_uv","uv"),&SurfaceTool::add_uv);
ObjectTypeDB::bind_method(_MD("add_uv2","uv2"),&SurfaceTool::add_uv2);
ObjectTypeDB::bind_method(_MD("add_bones","bones"),&SurfaceTool::add_bones);
ObjectTypeDB::bind_method(_MD("add_weights","weights"),&SurfaceTool::add_weights);
ObjectTypeDB::bind_method(_MD("set_material","material:Material"),&SurfaceTool::set_material);
ObjectTypeDB::bind_method(_MD("index"),&SurfaceTool::index);
ObjectTypeDB::bind_method(_MD("deindex"),&SurfaceTool::deindex);
ObjectTypeDB::bind_method(_MD("generate_flat_normals"),&SurfaceTool::generate_flat_normals);
ObjectTypeDB::bind_method(_MD("generate_smooth_normals"),&SurfaceTool::generate_smooth_normals);
ObjectTypeDB::bind_method(_MD("generate_tangents"),&SurfaceTool::generate_tangents);
ObjectTypeDB::bind_method(_MD("commit:Mesh","existing:Mesh"),&SurfaceTool::commit,DEFVAL( RefPtr() ));
ObjectTypeDB::bind_method(_MD("clear"),&SurfaceTool::clear);
}
SurfaceTool::SurfaceTool() {
first=false;
begun=false;
primitive=Mesh::PRIMITIVE_LINES;
format=0;
}
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