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godot/scene/resources/surface_tool.cpp

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/*************************************************************************/
/* surface_tool.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 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"
#define _VERTEX_SNAP 0.0001
#define EQ_VERTEX_DIST 0.00001
SurfaceTool::OptimizeVertexCacheFunc SurfaceTool::optimize_vertex_cache_func = nullptr;
SurfaceTool::SimplifyFunc SurfaceTool::simplify_func = nullptr;
SurfaceTool::SimplifyWithAttribFunc SurfaceTool::simplify_with_attrib_func = nullptr;
SurfaceTool::SimplifyScaleFunc SurfaceTool::simplify_scale_func = nullptr;
SurfaceTool::SimplifySloppyFunc SurfaceTool::simplify_sloppy_func = nullptr;
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;
}
}
for (int i = 0; i < RS::ARRAY_CUSTOM_COUNT; i++) {
if (custom[i] != p_vertex.custom[i]) {
return false;
}
}
if (smooth_group != p_vertex.smooth_group) {
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);
h = hash_djb2_buffer((const uint8_t *)&p_vtx.custom[0], sizeof(Color) * RS::ARRAY_CUSTOM_COUNT, h);
h = hash_djb2_one_32(p_vtx.smooth_group, 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;
vtx.smooth_group = last_smooth_group;
for (int i = 0; i < RS::ARRAY_CUSTOM_COUNT; i++) {
vtx.custom[i] = last_custom[i];
}
const int expected_vertices = skin_weights == SKIN_8_WEIGHTS ? 8 : 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 = 0.0;
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::set_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::set_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::set_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::set_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::set_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::set_custom(int p_index, const Color &p_custom) {
ERR_FAIL_INDEX(p_index, RS::ARRAY_CUSTOM_COUNT);
ERR_FAIL_COND(!begun);
ERR_FAIL_COND(last_custom_format[p_index] == CUSTOM_MAX);
static const uint32_t mask[RS::ARRAY_CUSTOM_COUNT] = { Mesh::ARRAY_FORMAT_CUSTOM0, Mesh::ARRAY_FORMAT_CUSTOM1, Mesh::ARRAY_FORMAT_CUSTOM2, Mesh::ARRAY_FORMAT_CUSTOM3 };
static const uint32_t shift[RS::ARRAY_CUSTOM_COUNT] = { Mesh::ARRAY_FORMAT_CUSTOM0_SHIFT, Mesh::ARRAY_FORMAT_CUSTOM1_SHIFT, Mesh::ARRAY_FORMAT_CUSTOM2_SHIFT, Mesh::ARRAY_FORMAT_CUSTOM3_SHIFT };
ERR_FAIL_COND(!first && !(format & mask[p_index]));
if (first) {
format |= mask[p_index];
format |= last_custom_format[p_index] << shift[p_index];
}
last_custom[p_index] = p_custom;
}
void SurfaceTool::set_bones(const Vector<int> &p_bones) {
ERR_FAIL_COND(!begun);
ERR_FAIL_COND(!first && !(format & Mesh::ARRAY_FORMAT_BONES));
format |= Mesh::ARRAY_FORMAT_BONES;
if (skin_weights == SKIN_8_WEIGHTS) {
format |= Mesh::ARRAY_FLAG_USE_8_BONE_WEIGHTS;
}
last_bones = p_bones;
}
void SurfaceTool::set_weights(const Vector<float> &p_weights) {
ERR_FAIL_COND(!begun);
ERR_FAIL_COND(!first && !(format & Mesh::ARRAY_FORMAT_WEIGHTS));
format |= Mesh::ARRAY_FORMAT_WEIGHTS;
if (skin_weights == SKIN_8_WEIGHTS) {
format |= Mesh::ARRAY_FLAG_USE_8_BONE_WEIGHTS;
}
last_weights = p_weights;
}
void SurfaceTool::set_smooth_group(uint32_t p_group) {
last_smooth_group = p_group;
}
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) \
set_color(p_colors[n]); \
if (p_uvs.size() > n) \
set_uv(p_uvs[n]); \
if (p_uv2s.size() > n) \
set_uv2(p_uv2s[n]); \
if (p_normals.size() > n) \
set_normal(p_normals[n]); \
if (p_tangents.size() > n) \
set_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);
ERR_FAIL_COND(p_index < 0);
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();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
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();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
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();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
w[idx * 4 + 0] = v.tangent.x;
w[idx * 4 + 1] = v.tangent.y;
w[idx * 4 + 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 * 4 + 3] = d < 0 ? -1 : 1;
}
a[i] = array;
} break;
case Mesh::ARRAY_COLOR: {
Vector<Color> array;
array.resize(varr_len);
Color *w = array.ptrw();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
w[idx] = v.color;
}
a[i] = array;
} break;
case Mesh::ARRAY_CUSTOM0:
case Mesh::ARRAY_CUSTOM1:
case Mesh::ARRAY_CUSTOM2:
case Mesh::ARRAY_CUSTOM3: {
int fmt = i - Mesh::ARRAY_CUSTOM0;
switch (last_custom_format[fmt]) {
case CUSTOM_RGBA8_UNORM: {
Vector<uint8_t> array;
array.resize(varr_len * 4);
uint8_t *w = array.ptrw();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
const Color &c = v.custom[fmt];
w[idx * 4 + 0] = CLAMP(int32_t(c.r * 255.0), 0, 255);
w[idx * 4 + 1] = CLAMP(int32_t(c.g * 255.0), 0, 255);
w[idx * 4 + 2] = CLAMP(int32_t(c.b * 255.0), 0, 255);
w[idx * 4 + 3] = CLAMP(int32_t(c.a * 255.0), 0, 255);
}
a[i] = array;
} break;
case CUSTOM_RGBA8_SNORM: {
Vector<uint8_t> array;
array.resize(varr_len * 4);
uint8_t *w = array.ptrw();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
const Color &c = v.custom[fmt];
w[idx * 4 + 0] = uint8_t(int8_t(CLAMP(int32_t(c.r * 127.0), -128, 127)));
w[idx * 4 + 1] = uint8_t(int8_t(CLAMP(int32_t(c.g * 127.0), -128, 127)));
w[idx * 4 + 2] = uint8_t(int8_t(CLAMP(int32_t(c.b * 127.0), -128, 127)));
w[idx * 4 + 3] = uint8_t(int8_t(CLAMP(int32_t(c.a * 127.0), -128, 127)));
}
a[i] = array;
} break;
case CUSTOM_RG_HALF: {
Vector<uint8_t> array;
array.resize(varr_len * 4);
uint16_t *w = (uint16_t *)array.ptrw();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
const Color &c = v.custom[fmt];
w[idx * 2 + 0] = Math::make_half_float(c.r);
w[idx * 2 + 1] = Math::make_half_float(c.g);
}
a[i] = array;
} break;
case CUSTOM_RGBA_HALF: {
Vector<uint8_t> array;
array.resize(varr_len * 8);
uint16_t *w = (uint16_t *)array.ptrw();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
const Color &c = v.custom[fmt];
w[idx * 4 + 0] = Math::make_half_float(c.r);
w[idx * 4 + 1] = Math::make_half_float(c.g);
w[idx * 4 + 2] = Math::make_half_float(c.b);
w[idx * 4 + 3] = Math::make_half_float(c.a);
}
a[i] = array;
} break;
case CUSTOM_R_FLOAT: {
Vector<float> array;
array.resize(varr_len);
float *w = (float *)array.ptrw();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
const Color &c = v.custom[fmt];
w[idx] = c.r;
}
a[i] = array;
} break;
case CUSTOM_RG_FLOAT: {
Vector<float> array;
array.resize(varr_len * 2);
float *w = (float *)array.ptrw();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
const Color &c = v.custom[fmt];
w[idx * 2 + 0] = c.r;
w[idx * 2 + 1] = c.g;
}
a[i] = array;
} break;
case CUSTOM_RGB_FLOAT: {
Vector<float> array;
array.resize(varr_len * 3);
float *w = (float *)array.ptrw();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
const Color &c = v.custom[fmt];
w[idx * 3 + 0] = c.r;
w[idx * 3 + 1] = c.g;
w[idx * 3 + 2] = c.b;
}
a[i] = array;
} break;
case CUSTOM_RGBA_FLOAT: {
Vector<float> array;
array.resize(varr_len * 4);
float *w = (float *)array.ptrw();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
const Color &c = v.custom[fmt];
w[idx * 4 + 0] = c.r;
w[idx * 4 + 1] = c.g;
w[idx * 4 + 2] = c.b;
w[idx * 4 + 3] = c.a;
}
a[i] = array;
} break;
default: {
} //unreachable but compiler warning anyway
}
} break;
case Mesh::ARRAY_BONES: {
int count = skin_weights == SKIN_8_WEIGHTS ? 8 : 4;
Vector<int> array;
array.resize(varr_len * count);
array.fill(0);
int *w = array.ptrw();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
if (v.bones.size() > count) {
ERR_PRINT_ONCE(vformat("Invalid bones size %d vs count %d", v.bones.size(), count));
continue;
}
for (int j = 0; j < count; j++) {
w[idx * count + j] = v.bones[j];
}
}
a[i] = array;
} break;
case Mesh::ARRAY_WEIGHTS: {
Vector<float> array;
int count = skin_weights == SKIN_8_WEIGHTS ? 8 : 4;
array.resize(varr_len * count);
array.fill(0.0f);
float *w = array.ptrw();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
if (v.weights.size() > count) {
ERR_PRINT_ONCE(vformat("Invalid weight size %d vs count %d", v.weights.size(), count));
continue;
}
for (int j = 0; j < count; j++) {
w[idx * count + 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();
for (uint32_t idx = 0; idx < index_array.size(); idx++) {
w[idx] = index_array[idx];
}
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.instantiate();
}
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;
LocalVector<Vertex> old_vertex_array = vertex_array;
vertex_array.clear();
for (uint32_t i = 0; i < old_vertex_array.size(); i++) {
int *idxptr = indices.getptr(old_vertex_array[i]);
int idx;
if (!idxptr) {
idx = indices.size();
vertex_array.push_back(old_vertex_array[i]);
indices[old_vertex_array[i]] = idx;
} else {
idx = *idxptr;
}
index_array.push_back(idx);
}
format |= Mesh::ARRAY_FORMAT_INDEX;
}
void SurfaceTool::deindex() {
if (index_array.size() == 0) {
return; //nothing to deindex
}
LocalVector<Vertex> old_vertex_array = vertex_array;
vertex_array.clear();
for (uint32_t i = 0; i < index_array.size(); i++) {
uint32_t index = index_array[i];
ERR_FAIL_COND(index >= old_vertex_array.size());
vertex_array.push_back(old_vertex_array[index]);
}
format &= ~Mesh::ARRAY_FORMAT_INDEX;
index_array.clear();
}
void SurfaceTool::_create_list(const Ref<Mesh> &p_existing, int p_surface, LocalVector<Vertex> *r_vertex, LocalVector<int> *r_index, uint32_t &lformat) {
ERR_FAIL_NULL_MSG(p_existing, "First argument in SurfaceTool::_create_list() must be a valid object of type Mesh");
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);
}
static const uint32_t custom_mask[RS::ARRAY_CUSTOM_COUNT] = { Mesh::ARRAY_FORMAT_CUSTOM0, Mesh::ARRAY_FORMAT_CUSTOM1, Mesh::ARRAY_FORMAT_CUSTOM2, Mesh::ARRAY_FORMAT_CUSTOM3 };
static const uint32_t custom_shift[RS::ARRAY_CUSTOM_COUNT] = { Mesh::ARRAY_FORMAT_CUSTOM0_SHIFT, Mesh::ARRAY_FORMAT_CUSTOM1_SHIFT, Mesh::ARRAY_FORMAT_CUSTOM2_SHIFT, Mesh::ARRAY_FORMAT_CUSTOM3_SHIFT };
void SurfaceTool::create_vertex_array_from_triangle_arrays(const Array &p_arrays, LocalVector<SurfaceTool::Vertex> &ret, uint32_t *r_format) {
ret.clear();
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];
Vector<float> custom_float[RS::ARRAY_CUSTOM_COUNT];
int vc = varr.size();
if (vc == 0) {
if (r_format) {
*r_format = 0;
}
return;
}
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;
}
int wcount = 0;
if (barr.size() && warr.size()) {
lformat |= RS::ARRAY_FORMAT_BONES;
lformat |= RS::ARRAY_FORMAT_WEIGHTS;
wcount = barr.size() / varr.size();
if (wcount == 8) {
lformat |= RS::ARRAY_FLAG_USE_8_BONE_WEIGHTS;
}
}
if (warr.size()) {
lformat |= RS::ARRAY_FORMAT_WEIGHTS;
}
for (int i = 0; i < RS::ARRAY_CUSTOM_COUNT; i++) {
ERR_CONTINUE_MSG(p_arrays[RS::ARRAY_CUSTOM0 + i].get_type() == Variant::PACKED_BYTE_ARRAY, "Extracting Byte/Half formats is not supported");
if (p_arrays[RS::ARRAY_CUSTOM0 + i].get_type() == Variant::PACKED_FLOAT32_ARRAY) {
lformat |= custom_mask[i];
custom_float[i] = p_arrays[RS::ARRAY_CUSTOM0 + i];
int fmt = custom_float[i].size() / varr.size();
if (fmt == 1) {
lformat |= CUSTOM_R_FLOAT << custom_shift[i];
} else if (fmt == 2) {
lformat |= CUSTOM_RG_FLOAT << custom_shift[i];
} else if (fmt == 3) {
lformat |= CUSTOM_RGB_FLOAT << custom_shift[i];
} else if (fmt == 4) {
lformat |= CUSTOM_RGBA_FLOAT << custom_shift[i];
}
}
}
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(wcount);
for (int j = 0; j < wcount; j++) {
b.write[j] = barr[i * wcount + j];
}
v.bones = b;
}
if (lformat & RS::ARRAY_FORMAT_WEIGHTS) {
Vector<float> w;
w.resize(wcount);
for (int j = 0; j < wcount; j++) {
w.write[j] = warr[i * wcount + j];
}
v.weights = w;
}
for (int j = 0; j < RS::ARRAY_CUSTOM_COUNT; j++) {
if (lformat & custom_mask[j]) {
int cc = custom_float[j].size() / varr.size();
for (int k = 0; k < cc; k++) {
v.custom[j][k] = custom_float[j][i * cc + k];
}
}
}
ret.push_back(v);
}
if (r_format) {
*r_format = lformat;
}
}
void SurfaceTool::_create_list_from_arrays(Array arr, LocalVector<Vertex> *r_vertex, LocalVector<int> *r_index, uint32_t &lformat) {
create_vertex_array_from_triangle_arrays(arr, *r_vertex, &lformat);
ERR_FAIL_COND(r_vertex->size() == 0);
//indices
r_index->clear();
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);
for (int j = 0; j < RS::ARRAY_CUSTOM_COUNT; j++) {
if (format & custom_mask[j]) {
last_custom_format[j] = (CustomFormat)((format >> custom_shift[j]) & RS::ARRAY_FORMAT_CUSTOM_MASK);
}
}
}
void SurfaceTool::create_from(const Ref<Mesh> &p_existing, int p_surface) {
ERR_FAIL_NULL_MSG(p_existing, "First argument in SurfaceTool::create_from() must be a valid object of type Mesh");
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);
for (int j = 0; j < RS::ARRAY_CUSTOM_COUNT; j++) {
if (format & custom_mask[j]) {
last_custom_format[j] = (CustomFormat)((format >> custom_shift[j]) & RS::ARRAY_FORMAT_CUSTOM_MASK);
}
}
}
void SurfaceTool::create_from_blend_shape(const Ref<Mesh> &p_existing, int p_surface, const String &p_blend_shape_name) {
ERR_FAIL_NULL_MSG(p_existing, "First argument in SurfaceTool::create_from_blend_shape() must be a valid object of type Mesh");
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);
for (int j = 0; j < RS::ARRAY_CUSTOM_COUNT; j++) {
if (format & custom_mask[j]) {
last_custom_format[j] = (CustomFormat)((format >> custom_shift[j]) & RS::ARRAY_FORMAT_CUSTOM_MASK);
}
}
}
void SurfaceTool::append_from(const Ref<Mesh> &p_existing, int p_surface, const Transform3D &p_xform) {
ERR_FAIL_NULL_MSG(p_existing, "First argument in SurfaceTool::append_from() must be a valid object of type Mesh");
if (vertex_array.size() == 0) {
primitive = p_existing->surface_get_primitive_type(p_surface);
format = 0;
}
uint32_t nformat;
LocalVector<Vertex> nvertices;
LocalVector<int> nindices;
_create_list(p_existing, p_surface, &nvertices, &nindices, nformat);
format |= nformat;
for (int j = 0; j < RS::ARRAY_CUSTOM_COUNT; j++) {
if (format & custom_mask[j]) {
CustomFormat new_format = (CustomFormat)((format >> custom_shift[j]) & RS::ARRAY_FORMAT_CUSTOM_MASK);
if (last_custom_format[j] != CUSTOM_MAX && last_custom_format[j] != new_format) {
WARN_PRINT(vformat("Custom %d format %d mismatch when appending format %d", j, last_custom_format[j], new_format));
}
last_custom_format[j] = new_format;
}
}
int vfrom = vertex_array.size();
for (uint32_t vi = 0; vi < nvertices.size(); vi++) {
Vertex v = nvertices[vi];
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 (uint32_t i = 0; i < nindices.size(); i++) {
int dst_index = nindices[i] + 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 {
LocalVector<SurfaceTool::Vertex> *vertices;
LocalVector<int> *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) {
uint32_t index = triangle_data.indices->operator[](iFace * 3 + iVert);
if (index < triangle_data.vertices->size()) {
v = triangle_data.vertices->operator[](index).vertex;
}
} else {
v = triangle_data.vertices->operator[](iFace * 3 + iVert).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) {
uint32_t index = triangle_data.indices->operator[](iFace * 3 + iVert);
if (index < triangle_data.vertices->size()) {
v = triangle_data.vertices->operator[](index).normal;
}
} else {
v = triangle_data.vertices->operator[](iFace * 3 + iVert).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) {
uint32_t index = triangle_data.indices->operator[](iFace * 3 + iVert);
if (index < triangle_data.vertices->size()) {
v = triangle_data.vertices->operator[](index).uv;
}
} else {
v = triangle_data.vertices->operator[](iFace * 3 + iVert).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) {
uint32_t index = triangle_data.indices->operator[](iFace * 3 + iVert);
if (index < triangle_data.vertices->size()) {
vtx = &triangle_data.vertices->operator[](index);
}
} else {
vtx = &triangle_data.vertices->operator[](iFace * 3 + iVert);
}
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 = &vertex_array;
for (uint32_t i = 0; i < vertex_array.size(); i++) {
vertex_array[i].binormal = Vector3();
vertex_array[i].tangent = Vector3();
}
triangle_data.indices = &index_array;
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();
ERR_FAIL_COND((vertex_array.size() % 3) != 0);
HashMap<Vertex, Vector3, VertexHasher> vertex_hash;
for (uint32_t vi = 0; vi < vertex_array.size(); vi += 3) {
Vertex *v = &vertex_array[vi];
Vector3 normal;
if (!p_flip) {
normal = Plane(v[0].vertex, v[1].vertex, v[2].vertex).normal;
} else {
normal = Plane(v[2].vertex, v[1].vertex, v[0].vertex).normal;
}
for (int i = 0; i < 3; i++) {
Vector3 *lv = vertex_hash.getptr(v[i]);
if (!lv) {
vertex_hash.set(v[i], normal);
} else {
(*lv) += normal;
}
}
}
for (uint32_t vi = 0; vi < vertex_array.size(); vi++) {
Vector3 *lv = vertex_hash.getptr(vertex_array[vi]);
if (!lv) {
vertex_array[vi].normal = Vector3();
} else {
vertex_array[vi].normal = lv->normalized();
}
}
format |= Mesh::ARRAY_FORMAT_NORMAL;
if (was_indexed) {
index();
}
}
void SurfaceTool::set_material(const Ref<Material> &p_material) {
material = p_material;
}
Ref<Material> SurfaceTool::get_material() const {
return material;
}
void SurfaceTool::clear() {
begun = false;
primitive = Mesh::PRIMITIVE_LINES;
format = 0;
last_bones.clear();
last_weights.clear();
index_array.clear();
vertex_array.clear();
material.unref();
last_smooth_group = 0;
for (int i = 0; i < RS::ARRAY_CUSTOM_COUNT; i++) {
last_custom_format[i] = CUSTOM_MAX;
}
skin_weights = SKIN_4_WEIGHTS;
}
void SurfaceTool::set_skin_weight_count(SkinWeightCount p_weights) {
ERR_FAIL_COND(begun);
skin_weights = p_weights;
}
SurfaceTool::SkinWeightCount SurfaceTool::get_skin_weight_count() const {
return skin_weights;
}
void SurfaceTool::set_custom_format(int p_index, CustomFormat p_format) {
ERR_FAIL_INDEX(p_index, RS::ARRAY_CUSTOM_COUNT);
ERR_FAIL_COND(begun);
last_custom_format[p_index] = p_format;
}
Mesh::PrimitiveType SurfaceTool::get_primitive() const {
return primitive;
}
SurfaceTool::CustomFormat SurfaceTool::get_custom_format(int p_index) const {
ERR_FAIL_INDEX_V(p_index, RS::ARRAY_CUSTOM_COUNT, CUSTOM_MAX);
return last_custom_format[p_index];
}
void SurfaceTool::optimize_indices_for_cache() {
ERR_FAIL_COND(optimize_vertex_cache_func == nullptr);
ERR_FAIL_COND(index_array.size() == 0);
ERR_FAIL_COND(index_array.size() % 3 != 0);
LocalVector old_index_array = index_array;
memset(index_array.ptr(), 0, index_array.size() * sizeof(int));
optimize_vertex_cache_func((unsigned int *)index_array.ptr(), (unsigned int *)old_index_array.ptr(), old_index_array.size(), vertex_array.size());
}
float SurfaceTool::get_max_axis_length() const {
ERR_FAIL_COND_V(vertex_array.size() == 0, 0);
AABB aabb;
for (uint32_t i = 0; i < vertex_array.size(); i++) {
if (i == 0) {
aabb.position = vertex_array[i].vertex;
} else {
aabb.expand_to(vertex_array[i].vertex);
}
}
return aabb.get_longest_axis_size();
}
Vector<int> SurfaceTool::generate_lod(float p_threshold, int p_target_index_count) {
Vector<int> lod;
ERR_FAIL_COND_V(simplify_func == nullptr, lod);
ERR_FAIL_COND_V(p_target_index_count < 0, lod);
ERR_FAIL_COND_V(vertex_array.size() == 0, lod);
ERR_FAIL_COND_V(index_array.size() == 0, lod);
ERR_FAIL_COND_V(index_array.size() % 3 != 0, lod);
ERR_FAIL_COND_V(index_array.size() < (unsigned int)p_target_index_count, lod);
lod.resize(index_array.size());
LocalVector<float> vertices; //uses floats
vertices.resize(vertex_array.size() * 3);
for (uint32_t i = 0; i < vertex_array.size(); i++) {
vertices[i * 3 + 0] = vertex_array[i].vertex.x;
vertices[i * 3 + 1] = vertex_array[i].vertex.y;
vertices[i * 3 + 2] = vertex_array[i].vertex.z;
}
float error;
uint32_t index_count = simplify_func((unsigned int *)lod.ptrw(), (unsigned int *)index_array.ptr(), index_array.size(), vertices.ptr(), vertex_array.size(), sizeof(float) * 3, p_target_index_count, p_threshold, &error);
ERR_FAIL_COND_V(index_count == 0, lod);
lod.resize(index_count);
return lod;
}
void SurfaceTool::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_skin_weight_count", "count"), &SurfaceTool::set_skin_weight_count);
ClassDB::bind_method(D_METHOD("get_skin_weight_count"), &SurfaceTool::get_skin_weight_count);
ClassDB::bind_method(D_METHOD("set_custom_format", "index", "format"), &SurfaceTool::set_custom_format);
ClassDB::bind_method(D_METHOD("get_custom_format", "index"), &SurfaceTool::get_custom_format);
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("set_color", "color"), &SurfaceTool::set_color);
ClassDB::bind_method(D_METHOD("set_normal", "normal"), &SurfaceTool::set_normal);
ClassDB::bind_method(D_METHOD("set_tangent", "tangent"), &SurfaceTool::set_tangent);
ClassDB::bind_method(D_METHOD("set_uv", "uv"), &SurfaceTool::set_uv);
ClassDB::bind_method(D_METHOD("set_uv2", "uv2"), &SurfaceTool::set_uv2);
ClassDB::bind_method(D_METHOD("set_bones", "bones"), &SurfaceTool::set_bones);
ClassDB::bind_method(D_METHOD("set_weights", "weights"), &SurfaceTool::set_weights);
ClassDB::bind_method(D_METHOD("set_custom", "index", "custom"), &SurfaceTool::set_custom);
ClassDB::bind_method(D_METHOD("set_smooth_group", "index"), &SurfaceTool::set_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("optimize_indices_for_cache"), &SurfaceTool::optimize_indices_for_cache);
ClassDB::bind_method(D_METHOD("get_max_axis_length"), &SurfaceTool::get_max_axis_length);
ClassDB::bind_method(D_METHOD("generate_lod", "nd_threshold", "target_index_count"), &SurfaceTool::generate_lod, DEFVAL(3));
ClassDB::bind_method(D_METHOD("set_material", "material"), &SurfaceTool::set_material);
ClassDB::bind_method(D_METHOD("get_primitive"), &SurfaceTool::get_primitive);
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(0));
ClassDB::bind_method(D_METHOD("commit_to_arrays"), &SurfaceTool::commit_to_arrays);
BIND_ENUM_CONSTANT(CUSTOM_RGBA8_UNORM);
BIND_ENUM_CONSTANT(CUSTOM_RGBA8_SNORM);
BIND_ENUM_CONSTANT(CUSTOM_RG_HALF);
BIND_ENUM_CONSTANT(CUSTOM_RGBA_HALF);
BIND_ENUM_CONSTANT(CUSTOM_R_FLOAT);
BIND_ENUM_CONSTANT(CUSTOM_RG_FLOAT);
BIND_ENUM_CONSTANT(CUSTOM_RGB_FLOAT);
BIND_ENUM_CONSTANT(CUSTOM_RGBA_FLOAT);
BIND_ENUM_CONSTANT(CUSTOM_MAX);
BIND_ENUM_CONSTANT(SKIN_4_WEIGHTS);
BIND_ENUM_CONSTANT(SKIN_8_WEIGHTS);
}
SurfaceTool::SurfaceTool() {
for (int i = 0; i < RS::ARRAY_CUSTOM_COUNT; i++) {
last_custom_format[i] = CUSTOM_MAX;
}
}
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