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virtualx-engine/scene/resources/surface_tool.cpp
Rémi Verschelde 0be6d925dc Style: clang-format: Disable KeepEmptyLinesAtTheStartOfBlocks 
Which means that reduz' beloved style which we all became used to
will now be changed automatically to remove the first empty line.

This makes us lean closer to 1TBS (the one true brace style) instead
of hybridating it with some Allman-inspired spacing.

There's still the case of braces around single-statement blocks that
needs to be addressed (but clang-format can't help with that, but
clang-tidy may if we agree about it).

Part of #33027.
2020-05-14 16:54:55 +02:00

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/*************************************************************************/
/* surface_tool.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* 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"
#include "core/method_bind_ext.gen.inc"
#define _VERTEX_SNAP 0.0001
#define EQ_VERTEX_DIST 0.00001
bool SurfaceTool::Vertex::operator==(const Vertex &p_vertex) const {
if (vertex != p_vertex.vertex)
return false;
if (uv != p_vertex.uv)
return false;
if (uv2 != p_vertex.uv2)
return false;
if (normal != p_vertex.normal)
return false;
if (binormal != p_vertex.binormal)
return false;
if (color != p_vertex.color)
return false;
if (bones.size() != p_vertex.bones.size())
return false;
for (int i = 0; i < bones.size(); i++) {
if (bones[i] != p_vertex.bones[i])
return false;
}
for (int i = 0; i < weights.size(); i++) {
if (weights[i] != p_vertex.weights[i])
return false;
}
return true;
}
uint32_t SurfaceTool::VertexHasher::hash(const Vertex &p_vtx) {
uint32_t h = hash_djb2_buffer((const uint8_t *)&p_vtx.vertex, sizeof(real_t) * 3);
h = hash_djb2_buffer((const uint8_t *)&p_vtx.normal, sizeof(real_t) * 3, h);
h = hash_djb2_buffer((const uint8_t *)&p_vtx.binormal, sizeof(real_t) * 3, h);
h = hash_djb2_buffer((const uint8_t *)&p_vtx.tangent, sizeof(real_t) * 3, h);
h = hash_djb2_buffer((const uint8_t *)&p_vtx.uv, sizeof(real_t) * 2, h);
h = hash_djb2_buffer((const uint8_t *)&p_vtx.uv2, sizeof(real_t) * 2, h);
h = hash_djb2_buffer((const uint8_t *)&p_vtx.color, sizeof(real_t) * 4, h);
h = hash_djb2_buffer((const uint8_t *)p_vtx.bones.ptr(), p_vtx.bones.size() * sizeof(int), h);
h = hash_djb2_buffer((const uint8_t *)p_vtx.weights.ptr(), p_vtx.weights.size() * sizeof(float), h);
return h;
}
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.uv2 = last_uv2;
vtx.weights = last_weights;
vtx.bones = last_bones;
vtx.tangent = last_tangent.normal;
vtx.binormal = last_normal.cross(last_tangent.normal).normalized() * last_tangent.d;
const int expected_vertices = 4;
if ((format & Mesh::ARRAY_FORMAT_WEIGHTS || format & Mesh::ARRAY_FORMAT_BONES) && (vtx.weights.size() != expected_vertices || vtx.bones.size() != expected_vertices)) {
//ensure vertices are the expected amount
ERR_FAIL_COND(vtx.weights.size() != vtx.bones.size());
if (vtx.weights.size() < expected_vertices) {
//less than required, fill
for (int i = vtx.weights.size(); i < expected_vertices; i++) {
vtx.weights.push_back(0);
vtx.bones.push_back(0);
}
} else if (vtx.weights.size() > expected_vertices) {
//more than required, sort, cap and normalize.
Vector<WeightSort> weights;
for (int i = 0; i < vtx.weights.size(); i++) {
WeightSort ws;
ws.index = vtx.bones[i];
ws.weight = vtx.weights[i];
weights.push_back(ws);
}
//sort
weights.sort();
//cap
weights.resize(expected_vertices);
//renormalize
float total = 0;
for (int i = 0; i < expected_vertices; i++) {
total += weights[i].weight;
}
vtx.weights.resize(expected_vertices);
vtx.bones.resize(expected_vertices);
for (int i = 0; i < expected_vertices; i++) {
if (total > 0) {
vtx.weights.write[i] = weights[i].weight / total;
} else {
vtx.weights.write[i] = 0;
}
vtx.bones.write[i] = weights[i].index;
}
}
}
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(!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(!first && !(format & Mesh::ARRAY_FORMAT_WEIGHTS));
format |= Mesh::ARRAY_FORMAT_WEIGHTS;
last_weights = p_weights;
}
void SurfaceTool::add_smooth_group(bool p_smooth) {
ERR_FAIL_COND(!begun);
if (index_array.size()) {
smooth_groups[index_array.size()] = p_smooth;
} else {
smooth_groups[vertex_array.size()] = p_smooth;
}
}
void SurfaceTool::add_triangle_fan(const Vector<Vector3> &p_vertices, const Vector<Vector2> &p_uvs, const Vector<Color> &p_colors, const Vector<Vector2> &p_uv2s, const Vector<Vector3> &p_normals, const Vector<Plane> &p_tangents) {
ERR_FAIL_COND(!begun);
ERR_FAIL_COND(primitive != Mesh::PRIMITIVE_TRIANGLES);
ERR_FAIL_COND(p_vertices.size() < 3);
#define ADD_POINT(n) \
{ \
if (p_colors.size() > n) \
add_color(p_colors[n]); \
if (p_uvs.size() > n) \
add_uv(p_uvs[n]); \
if (p_uv2s.size() > n) \
add_uv2(p_uv2s[n]); \
if (p_normals.size() > n) \
add_normal(p_normals[n]); \
if (p_tangents.size() > n) \
add_tangent(p_tangents[n]); \
add_vertex(p_vertices[n]); \
}
for (int i = 0; i < p_vertices.size() - 2; i++) {
ADD_POINT(0);
ADD_POINT(i + 1);
ADD_POINT(i + 2);
}
#undef ADD_POINT
}
void SurfaceTool::add_index(int p_index) {
ERR_FAIL_COND(!begun);
format |= Mesh::ARRAY_FORMAT_INDEX;
index_array.push_back(p_index);
}
Array SurfaceTool::commit_to_arrays() {
int varr_len = vertex_array.size();
Array a;
a.resize(Mesh::ARRAY_MAX);
for (int i = 0; i < Mesh::ARRAY_MAX; i++) {
if (!(format & (1 << i)))
continue; //not in format
switch (i) {
case Mesh::ARRAY_VERTEX:
case Mesh::ARRAY_NORMAL: {
Vector<Vector3> array;
array.resize(varr_len);
Vector3 *w = array.ptrw();
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;
}
}
a[i] = array;
} break;
case Mesh::ARRAY_TEX_UV:
case Mesh::ARRAY_TEX_UV2: {
Vector<Vector2> array;
array.resize(varr_len);
Vector2 *w = array.ptrw();
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;
}
}
a[i] = array;
} break;
case Mesh::ARRAY_TANGENT: {
Vector<float> array;
array.resize(varr_len * 4);
float *w = array.ptrw();
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.tangent.dot(v.binormal,v.normal);
float d = v.binormal.dot(v.normal.cross(v.tangent));
w[idx + 3] = d < 0 ? -1 : 1;
}
a[i] = array;
} break;
case Mesh::ARRAY_COLOR: {
Vector<Color> array;
array.resize(varr_len);
Color *w = array.ptrw();
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;
}
a[i] = array;
} break;
case Mesh::ARRAY_BONES: {
Vector<int> array;
array.resize(varr_len * 4);
int *w = array.ptrw();
int idx = 0;
for (List<Vertex>::Element *E = vertex_array.front(); E; E = E->next(), idx += 4) {
const Vertex &v = E->get();
ERR_CONTINUE(v.bones.size() != 4);
for (int j = 0; j < 4; j++) {
w[idx + j] = v.bones[j];
}
}
a[i] = array;
} break;
case Mesh::ARRAY_WEIGHTS: {
Vector<float> array;
array.resize(varr_len * 4);
float *w = array.ptrw();
int idx = 0;
for (List<Vertex>::Element *E = vertex_array.front(); E; E = E->next(), idx += 4) {
const Vertex &v = E->get();
ERR_CONTINUE(v.weights.size() != 4);
for (int j = 0; j < 4; j++) {
w[idx + j] = v.weights[j];
}
}
a[i] = array;
} break;
case Mesh::ARRAY_INDEX: {
ERR_CONTINUE(index_array.size() == 0);
Vector<int> array;
array.resize(index_array.size());
int *w = array.ptrw();
int idx = 0;
for (List<int>::Element *E = index_array.front(); E; E = E->next(), idx++) {
w[idx] = E->get();
}
a[i] = array;
} break;
default: {
}
}
}
return a;
}
Ref<ArrayMesh> SurfaceTool::commit(const Ref<ArrayMesh> &p_existing, uint32_t p_flags) {
Ref<ArrayMesh> mesh;
if (p_existing.is_valid())
mesh = p_existing;
else
mesh.instance();
int varr_len = vertex_array.size();
if (varr_len == 0)
return mesh;
int surface = mesh->get_surface_count();
Array a = commit_to_arrays();
mesh->add_surface_from_arrays(primitive, a, Array(), Dictionary(), p_flags);
if (material.is_valid())
mesh->surface_set_material(surface, material);
return mesh;
}
void SurfaceTool::index() {
if (index_array.size())
return; //already indexed
HashMap<Vertex, int, VertexHasher> indices;
List<Vertex> new_vertices;
for (List<Vertex>::Element *E = vertex_array.front(); E; E = E->next()) {
int *idxptr = indices.getptr(E->get());
int idx;
if (!idxptr) {
idx = indices.size();
new_vertices.push_back(E->get());
indices[E->get()] = idx;
} else {
idx = *idxptr;
}
index_array.push_back(idx);
}
vertex_array.clear();
vertex_array = new_vertices;
format |= Mesh::ARRAY_FORMAT_INDEX;
}
void SurfaceTool::deindex() {
if (index_array.size() == 0)
return; //nothing to deindex
Vector<Vertex> varr;
varr.resize(vertex_array.size());
int idx = 0;
for (List<Vertex>::Element *E = vertex_array.front(); E; E = E->next()) {
varr.write[idx++] = E->get();
}
vertex_array.clear();
for (List<int>::Element *E = index_array.front(); E; E = E->next()) {
ERR_FAIL_INDEX(E->get(), varr.size());
vertex_array.push_back(varr[E->get()]);
}
format &= ~Mesh::ARRAY_FORMAT_INDEX;
index_array.clear();
}
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() != RS::ARRAY_MAX);
_create_list_from_arrays(arr, r_vertex, r_index, lformat);
}
Vector<SurfaceTool::Vertex> SurfaceTool::create_vertex_array_from_triangle_arrays(const Array &p_arrays) {
Vector<SurfaceTool::Vertex> ret;
Vector<Vector3> varr = p_arrays[RS::ARRAY_VERTEX];
Vector<Vector3> narr = p_arrays[RS::ARRAY_NORMAL];
Vector<float> tarr = p_arrays[RS::ARRAY_TANGENT];
Vector<Color> carr = p_arrays[RS::ARRAY_COLOR];
Vector<Vector2> uvarr = p_arrays[RS::ARRAY_TEX_UV];
Vector<Vector2> uv2arr = p_arrays[RS::ARRAY_TEX_UV2];
Vector<int> barr = p_arrays[RS::ARRAY_BONES];
Vector<float> warr = p_arrays[RS::ARRAY_WEIGHTS];
int vc = varr.size();
if (vc == 0)
return ret;
int lformat = 0;
if (varr.size()) {
lformat |= RS::ARRAY_FORMAT_VERTEX;
}
if (narr.size()) {
lformat |= RS::ARRAY_FORMAT_NORMAL;
}
if (tarr.size()) {
lformat |= RS::ARRAY_FORMAT_TANGENT;
}
if (carr.size()) {
lformat |= RS::ARRAY_FORMAT_COLOR;
}
if (uvarr.size()) {
lformat |= RS::ARRAY_FORMAT_TEX_UV;
}
if (uv2arr.size()) {
lformat |= RS::ARRAY_FORMAT_TEX_UV2;
}
if (barr.size()) {
lformat |= RS::ARRAY_FORMAT_BONES;
}
if (warr.size()) {
lformat |= RS::ARRAY_FORMAT_WEIGHTS;
}
for (int i = 0; i < vc; i++) {
Vertex v;
if (lformat & RS::ARRAY_FORMAT_VERTEX)
v.vertex = varr[i];
if (lformat & RS::ARRAY_FORMAT_NORMAL)
v.normal = narr[i];
if (lformat & RS::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(v.tangent).normalized() * p.d;
}
if (lformat & RS::ARRAY_FORMAT_COLOR)
v.color = carr[i];
if (lformat & RS::ARRAY_FORMAT_TEX_UV)
v.uv = uvarr[i];
if (lformat & RS::ARRAY_FORMAT_TEX_UV2)
v.uv2 = uv2arr[i];
if (lformat & RS::ARRAY_FORMAT_BONES) {
Vector<int> b;
b.resize(4);
b.write[0] = barr[i * 4 + 0];
b.write[1] = barr[i * 4 + 1];
b.write[2] = barr[i * 4 + 2];
b.write[3] = barr[i * 4 + 3];
v.bones = b;
}
if (lformat & RS::ARRAY_FORMAT_WEIGHTS) {
Vector<float> w;
w.resize(4);
w.write[0] = warr[i * 4 + 0];
w.write[1] = warr[i * 4 + 1];
w.write[2] = warr[i * 4 + 2];
w.write[3] = warr[i * 4 + 3];
v.weights = w;
}
ret.push_back(v);
}
return ret;
}
void SurfaceTool::_create_list_from_arrays(Array arr, List<Vertex> *r_vertex, List<int> *r_index, int &lformat) {
Vector<Vector3> varr = arr[RS::ARRAY_VERTEX];
Vector<Vector3> narr = arr[RS::ARRAY_NORMAL];
Vector<float> tarr = arr[RS::ARRAY_TANGENT];
Vector<Color> carr = arr[RS::ARRAY_COLOR];
Vector<Vector2> uvarr = arr[RS::ARRAY_TEX_UV];
Vector<Vector2> uv2arr = arr[RS::ARRAY_TEX_UV2];
Vector<int> barr = arr[RS::ARRAY_BONES];
Vector<float> warr = arr[RS::ARRAY_WEIGHTS];
int vc = varr.size();
if (vc == 0)
return;
lformat = 0;
if (varr.size()) {
lformat |= RS::ARRAY_FORMAT_VERTEX;
}
if (narr.size()) {
lformat |= RS::ARRAY_FORMAT_NORMAL;
}
if (tarr.size()) {
lformat |= RS::ARRAY_FORMAT_TANGENT;
}
if (carr.size()) {
lformat |= RS::ARRAY_FORMAT_COLOR;
}
if (uvarr.size()) {
lformat |= RS::ARRAY_FORMAT_TEX_UV;
}
if (uv2arr.size()) {
lformat |= RS::ARRAY_FORMAT_TEX_UV2;
}
if (barr.size()) {
lformat |= RS::ARRAY_FORMAT_BONES;
}
if (warr.size()) {
lformat |= RS::ARRAY_FORMAT_WEIGHTS;
}
for (int i = 0; i < vc; i++) {
Vertex v;
if (lformat & RS::ARRAY_FORMAT_VERTEX)
v.vertex = varr[i];
if (lformat & RS::ARRAY_FORMAT_NORMAL)
v.normal = narr[i];
if (lformat & RS::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(v.tangent).normalized() * p.d;
}
if (lformat & RS::ARRAY_FORMAT_COLOR)
v.color = carr[i];
if (lformat & RS::ARRAY_FORMAT_TEX_UV)
v.uv = uvarr[i];
if (lformat & RS::ARRAY_FORMAT_TEX_UV2)
v.uv2 = uv2arr[i];
if (lformat & RS::ARRAY_FORMAT_BONES) {
Vector<int> b;
b.resize(4);
b.write[0] = barr[i * 4 + 0];
b.write[1] = barr[i * 4 + 1];
b.write[2] = barr[i * 4 + 2];
b.write[3] = barr[i * 4 + 3];
v.bones = b;
}
if (lformat & RS::ARRAY_FORMAT_WEIGHTS) {
Vector<float> w;
w.resize(4);
w.write[0] = warr[i * 4 + 0];
w.write[1] = warr[i * 4 + 1];
w.write[2] = warr[i * 4 + 2];
w.write[3] = warr[i * 4 + 3];
v.weights = w;
}
r_vertex->push_back(v);
}
//indices
Vector<int> idx = arr[RS::ARRAY_INDEX];
int is = idx.size();
if (is) {
lformat |= RS::ARRAY_FORMAT_INDEX;
const int *iarr = idx.ptr();
for (int i = 0; i < is; i++) {
r_index->push_back(iarr[i]);
}
}
}
void SurfaceTool::create_from_triangle_arrays(const Array &p_arrays) {
clear();
primitive = Mesh::PRIMITIVE_TRIANGLES;
_create_list_from_arrays(p_arrays, &vertex_array, &index_array, format);
}
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);
material = p_existing->surface_get_material(p_surface);
}
void SurfaceTool::create_from_blend_shape(const Ref<Mesh> &p_existing, int p_surface, const String &p_blend_shape_name) {
clear();
primitive = p_existing->surface_get_primitive_type(p_surface);
Array arr = p_existing->surface_get_blend_shape_arrays(p_surface);
Array blend_shape_names;
int32_t shape_idx = -1;
for (int32_t i = 0; i < p_existing->get_blend_shape_count(); i++) {
String name = p_existing->get_blend_shape_name(i);
if (name == p_blend_shape_name) {
shape_idx = i;
break;
}
}
ERR_FAIL_COND(shape_idx == -1);
ERR_FAIL_COND(shape_idx >= arr.size());
Array mesh = arr[shape_idx];
ERR_FAIL_COND(mesh.size() != RS::ARRAY_MAX);
_create_list_from_arrays(arr[shape_idx], &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 & RS::ARRAY_FORMAT_NORMAL) {
v.normal = p_xform.basis.xform(v.normal);
}
if (nformat & RS::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;
index_array.push_back(dst_index);
}
if (index_array.size() % 3) {
WARN_PRINT("SurfaceTool: Index array not a multiple of 3.");
}
}
//mikktspace callbacks
namespace {
struct TangentGenerationContextUserData {
Vector<List<SurfaceTool::Vertex>::Element *> vertices;
Vector<List<int>::Element *> indices;
};
} // namespace
int SurfaceTool::mikktGetNumFaces(const SMikkTSpaceContext *pContext) {
TangentGenerationContextUserData &triangle_data = *reinterpret_cast<TangentGenerationContextUserData *>(pContext->m_pUserData);
if (triangle_data.indices.size() > 0) {
return triangle_data.indices.size() / 3;
} else {
return triangle_data.vertices.size() / 3;
}
}
int SurfaceTool::mikktGetNumVerticesOfFace(const SMikkTSpaceContext *pContext, const int iFace) {
return 3; //always 3
}
void SurfaceTool::mikktGetPosition(const SMikkTSpaceContext *pContext, float fvPosOut[], const int iFace, const int iVert) {
TangentGenerationContextUserData &triangle_data = *reinterpret_cast<TangentGenerationContextUserData *>(pContext->m_pUserData);
Vector3 v;
if (triangle_data.indices.size() > 0) {
int index = triangle_data.indices[iFace * 3 + iVert]->get();
if (index < triangle_data.vertices.size()) {
v = triangle_data.vertices[index]->get().vertex;
}
} else {
v = triangle_data.vertices[iFace * 3 + iVert]->get().vertex;
}
fvPosOut[0] = v.x;
fvPosOut[1] = v.y;
fvPosOut[2] = v.z;
}
void SurfaceTool::mikktGetNormal(const SMikkTSpaceContext *pContext, float fvNormOut[], const int iFace, const int iVert) {
TangentGenerationContextUserData &triangle_data = *reinterpret_cast<TangentGenerationContextUserData *>(pContext->m_pUserData);
Vector3 v;
if (triangle_data.indices.size() > 0) {
int index = triangle_data.indices[iFace * 3 + iVert]->get();
if (index < triangle_data.vertices.size()) {
v = triangle_data.vertices[index]->get().normal;
}
} else {
v = triangle_data.vertices[iFace * 3 + iVert]->get().normal;
}
fvNormOut[0] = v.x;
fvNormOut[1] = v.y;
fvNormOut[2] = v.z;
}
void SurfaceTool::mikktGetTexCoord(const SMikkTSpaceContext *pContext, float fvTexcOut[], const int iFace, const int iVert) {
TangentGenerationContextUserData &triangle_data = *reinterpret_cast<TangentGenerationContextUserData *>(pContext->m_pUserData);
Vector2 v;
if (triangle_data.indices.size() > 0) {
int index = triangle_data.indices[iFace * 3 + iVert]->get();
if (index < triangle_data.vertices.size()) {
v = triangle_data.vertices[index]->get().uv;
}
} else {
v = triangle_data.vertices[iFace * 3 + iVert]->get().uv;
}
fvTexcOut[0] = v.x;
fvTexcOut[1] = v.y;
}
void SurfaceTool::mikktSetTSpaceDefault(const SMikkTSpaceContext *pContext, const float fvTangent[], const float fvBiTangent[], const float fMagS, const float fMagT,
const tbool bIsOrientationPreserving, const int iFace, const int iVert) {
TangentGenerationContextUserData &triangle_data = *reinterpret_cast<TangentGenerationContextUserData *>(pContext->m_pUserData);
Vertex *vtx = nullptr;
if (triangle_data.indices.size() > 0) {
int index = triangle_data.indices[iFace * 3 + iVert]->get();
if (index < triangle_data.vertices.size()) {
vtx = &triangle_data.vertices[index]->get();
}
} else {
vtx = &triangle_data.vertices[iFace * 3 + iVert]->get();
}
if (vtx != nullptr) {
vtx->tangent = Vector3(fvTangent[0], fvTangent[1], fvTangent[2]);
vtx->binormal = Vector3(-fvBiTangent[0], -fvBiTangent[1], -fvBiTangent[2]); // for some reason these are reversed, something with the coordinate system in Godot
}
}
void SurfaceTool::generate_tangents() {
ERR_FAIL_COND(!(format & Mesh::ARRAY_FORMAT_TEX_UV));
ERR_FAIL_COND(!(format & Mesh::ARRAY_FORMAT_NORMAL));
SMikkTSpaceInterface mkif;
mkif.m_getNormal = mikktGetNormal;
mkif.m_getNumFaces = mikktGetNumFaces;
mkif.m_getNumVerticesOfFace = mikktGetNumVerticesOfFace;
mkif.m_getPosition = mikktGetPosition;
mkif.m_getTexCoord = mikktGetTexCoord;
mkif.m_setTSpace = mikktSetTSpaceDefault;
mkif.m_setTSpaceBasic = nullptr;
SMikkTSpaceContext msc;
msc.m_pInterface = &mkif;
TangentGenerationContextUserData triangle_data;
triangle_data.vertices.resize(vertex_array.size());
int idx = 0;
for (List<Vertex>::Element *E = vertex_array.front(); E; E = E->next()) {
triangle_data.vertices.write[idx++] = E;
E->get().binormal = Vector3();
E->get().tangent = Vector3();
}
triangle_data.indices.resize(index_array.size());
idx = 0;
for (List<int>::Element *E = index_array.front(); E; E = E->next()) {
triangle_data.indices.write[idx++] = E;
}
msc.m_pUserData = &triangle_data;
bool res = genTangSpaceDefault(&msc);
ERR_FAIL_COND(!res);
format |= Mesh::ARRAY_FORMAT_TANGENT;
}
void SurfaceTool::generate_normals(bool p_flip) {
ERR_FAIL_COND(primitive != Mesh::PRIMITIVE_TRIANGLES);
bool was_indexed = index_array.size();
deindex();
HashMap<Vertex, Vector3, VertexHasher> vertex_hash;
int count = 0;
bool smooth = false;
if (smooth_groups.has(0))
smooth = smooth_groups[0];
List<Vertex>::Element *B = vertex_array.front();
for (List<Vertex>::Element *E = B; E;) {
List<Vertex>::Element *v[3];
v[0] = E;
v[1] = v[0]->next();
ERR_FAIL_COND(!v[1]);
v[2] = v[1]->next();
ERR_FAIL_COND(!v[2]);
E = v[2]->next();
Vector3 normal;
if (!p_flip)
normal = Plane(v[0]->get().vertex, v[1]->get().vertex, v[2]->get().vertex).normal;
else
normal = Plane(v[2]->get().vertex, v[1]->get().vertex, v[0]->get().vertex).normal;
if (smooth) {
for (int i = 0; i < 3; i++) {
Vector3 *lv = vertex_hash.getptr(v[i]->get());
if (!lv) {
vertex_hash.set(v[i]->get(), normal);
} else {
(*lv) += normal;
}
}
} else {
for (int i = 0; i < 3; i++) {
v[i]->get().normal = normal;
}
}
count += 3;
if (smooth_groups.has(count) || !E) {
if (vertex_hash.size()) {
while (B != E) {
Vector3 *lv = vertex_hash.getptr(B->get());
if (lv) {
B->get().normal = lv->normalized();
}
B = B->next();
}
} else {
B = E;
}
vertex_hash.clear();
if (E) {
smooth = smooth_groups[count];
}
}
}
format |= Mesh::ARRAY_FORMAT_NORMAL;
if (was_indexed) {
index();
smooth_groups.clear();
}
}
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();
smooth_groups.clear();
material.unref();
}
void SurfaceTool::_bind_methods() {
ClassDB::bind_method(D_METHOD("begin", "primitive"), &SurfaceTool::begin);
ClassDB::bind_method(D_METHOD("add_vertex", "vertex"), &SurfaceTool::add_vertex);
ClassDB::bind_method(D_METHOD("add_color", "color"), &SurfaceTool::add_color);
ClassDB::bind_method(D_METHOD("add_normal", "normal"), &SurfaceTool::add_normal);
ClassDB::bind_method(D_METHOD("add_tangent", "tangent"), &SurfaceTool::add_tangent);
ClassDB::bind_method(D_METHOD("add_uv", "uv"), &SurfaceTool::add_uv);
ClassDB::bind_method(D_METHOD("add_uv2", "uv2"), &SurfaceTool::add_uv2);
ClassDB::bind_method(D_METHOD("add_bones", "bones"), &SurfaceTool::add_bones);
ClassDB::bind_method(D_METHOD("add_weights", "weights"), &SurfaceTool::add_weights);
ClassDB::bind_method(D_METHOD("add_smooth_group", "smooth"), &SurfaceTool::add_smooth_group);
ClassDB::bind_method(D_METHOD("add_triangle_fan", "vertices", "uvs", "colors", "uv2s", "normals", "tangents"), &SurfaceTool::add_triangle_fan, DEFVAL(Vector<Vector2>()), DEFVAL(Vector<Color>()), DEFVAL(Vector<Vector2>()), DEFVAL(Vector<Vector3>()), DEFVAL(Vector<Plane>()));
ClassDB::bind_method(D_METHOD("add_index", "index"), &SurfaceTool::add_index);
ClassDB::bind_method(D_METHOD("index"), &SurfaceTool::index);
ClassDB::bind_method(D_METHOD("deindex"), &SurfaceTool::deindex);
ClassDB::bind_method(D_METHOD("generate_normals", "flip"), &SurfaceTool::generate_normals, DEFVAL(false));
ClassDB::bind_method(D_METHOD("generate_tangents"), &SurfaceTool::generate_tangents);
ClassDB::bind_method(D_METHOD("set_material", "material"), &SurfaceTool::set_material);
ClassDB::bind_method(D_METHOD("clear"), &SurfaceTool::clear);
ClassDB::bind_method(D_METHOD("create_from", "existing", "surface"), &SurfaceTool::create_from);
ClassDB::bind_method(D_METHOD("create_from_blend_shape", "existing", "surface", "blend_shape"), &SurfaceTool::create_from_blend_shape);
ClassDB::bind_method(D_METHOD("append_from", "existing", "surface", "transform"), &SurfaceTool::append_from);
ClassDB::bind_method(D_METHOD("commit", "existing", "flags"), &SurfaceTool::commit, DEFVAL(Variant()), DEFVAL(Mesh::ARRAY_COMPRESS_DEFAULT));
ClassDB::bind_method(D_METHOD("commit_to_arrays"), &SurfaceTool::commit_to_arrays);
}
SurfaceTool::SurfaceTool() {
first = false;
begun = false;
primitive = Mesh::PRIMITIVE_LINES;
format = 0;
}
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