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surface_tool.cpp
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surface_tool.cpp
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/**************************************************************************/
/* surface_tool.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* 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 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;
SurfaceTool::GenerateRemapFunc SurfaceTool::generate_remap_func = nullptr;
SurfaceTool::RemapVertexFunc SurfaceTool::remap_vertex_func = nullptr;
SurfaceTool::RemapIndexFunc SurfaceTool::remap_index_func = nullptr;
void SurfaceTool::strip_mesh_arrays(PackedVector3Array &r_vertices, PackedInt32Array &r_indices) {
ERR_FAIL_COND_MSG(!generate_remap_func || !remap_vertex_func || !remap_index_func, "Meshoptimizer library is not initialized.");
Vector<uint32_t> remap;
remap.resize(r_vertices.size());
uint32_t new_vertex_count = generate_remap_func(remap.ptrw(), (unsigned int *)r_indices.ptr(), r_indices.size(), r_vertices.ptr(), r_vertices.size(), sizeof(Vector3));
remap_vertex_func(r_vertices.ptrw(), r_vertices.ptr(), r_vertices.size(), sizeof(Vector3), remap.ptr());
r_vertices.resize(new_vertex_count);
remap_index_func((unsigned int *)r_indices.ptrw(), (unsigned int *)r_indices.ptr(), r_indices.size(), remap.ptr());
HashMap<const int *, bool, TriangleHasher, TriangleHasher> found_triangles;
int *idx_ptr = r_indices.ptrw();
int filtered_indices_count = 0;
for (int i = 0; i < r_indices.size() / 3; i++) {
const int *tri = idx_ptr + (i * 3);
if (tri[0] == tri[1] || tri[1] == tri[2] || tri[2] == tri[0]) {
continue;
}
if (found_triangles.has(tri)) {
continue;
}
if (i != filtered_indices_count) {
memcpy(idx_ptr + (filtered_indices_count * 3), tri, sizeof(int) * 3);
}
found_triangles[tri] = true;
filtered_indices_count++;
}
r_indices.resize(filtered_indices_count * 3);
}
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 (tangent != p_vertex.tangent) {
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_murmur3_one_32(p_vtx.smooth_group, h);
h = hash_fmix32(h);
return h;
}
bool SurfaceTool::SmoothGroupVertex::operator==(const SmoothGroupVertex &p_vertex) const {
if (vertex != p_vertex.vertex) {
return false;
}
if (smooth_group != p_vertex.smooth_group) {
return false;
}
return true;
}
uint32_t SurfaceTool::SmoothGroupVertexHasher::hash(const SmoothGroupVertex &p_vtx) {
uint32_t h = hash_djb2_buffer((const uint8_t *)&p_vtx.vertex, sizeof(real_t) * 3);
h = hash_murmur3_one_32(p_vtx.smooth_group, h);
h = hash_fmix32(h);
return h;
}
uint32_t SurfaceTool::TriangleHasher::hash(const int *p_triangle) {
int t0 = p_triangle[0];
int t1 = p_triangle[1];
int t2 = p_triangle[2];
if (t0 > t1) {
SWAP(t0, t1);
}
if (t1 > t2) {
SWAP(t1, t2);
}
if (t0 > t1) {
SWAP(t0, t1);
}
return (t0 * 73856093) ^ (t1 * 19349663) ^ (t2 * 83492791);
}
bool SurfaceTool::TriangleHasher::compare(const int *p_lhs, const int *p_rhs) {
int r0 = p_rhs[0];
int r1 = p_rhs[1];
int r2 = p_rhs[2];
if (r0 > r1) {
SWAP(r0, r1);
}
if (r1 > r2) {
SWAP(r1, r2);
}
if (r0 > r1) {
SWAP(r0, r1);
}
int l0 = p_lhs[0];
int l1 = p_lhs[1];
int l2 = p_lhs[2];
if (l0 > l1) {
SWAP(l0, l1);
}
if (l1 > l2) {
SWAP(l1, l2);
}
if (l0 > l1) {
SWAP(l0, l1);
}
return l0 == r0 && l1 == r1 && l2 == r2;
}
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_channel_index, const Color &p_custom) {
ERR_FAIL_INDEX(p_channel_index, RS::ARRAY_CUSTOM_COUNT);
ERR_FAIL_COND(!begun);
ERR_FAIL_COND(last_custom_format[p_channel_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 };
ERR_FAIL_COND(!first && !(format & mask[p_channel_index]));
if (first) {
format |= mask[p_channel_index];
}
last_custom[p_channel_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 TypedArray<Plane> &p_tangents) {
add_triangle_fan(p_vertices, p_uvs, p_colors, p_uv2s, p_normals, Variant(p_tangents));
}
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 & (1ULL << 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.is_empty());
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, uint64_t p_compress_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();
uint64_t compress_flags = (p_compress_flags >> RS::ARRAY_COMPRESS_FLAGS_BASE) << RS::ARRAY_COMPRESS_FLAGS_BASE;
static const uint64_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 };
for (int i = 0; i < RS::ARRAY_CUSTOM_COUNT; i++) {
if (last_custom_format[i] != CUSTOM_MAX) {
compress_flags |= uint64_t(last_custom_format[i]) << shift[i];
}
}
mesh->add_surface_from_arrays(primitive, a, Array(), Dictionary(), compress_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 (const Vertex &vertex : old_vertex_array) {
int *idxptr = indices.getptr(vertex);
int idx;
if (!idxptr) {
idx = indices.size();
vertex_array.push_back(vertex);
indices[vertex] = 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 (const int &index : index_array) {
ERR_FAIL_COND(uint32_t(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, uint64_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);
}
const uint32_t SurfaceTool::custom_mask[RS::ARRAY_CUSTOM_COUNT] = { Mesh::ARRAY_FORMAT_CUSTOM0, Mesh::ARRAY_FORMAT_CUSTOM1, Mesh::ARRAY_FORMAT_CUSTOM2, Mesh::ARRAY_FORMAT_CUSTOM3 };
const uint32_t SurfaceTool::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_arrays(const Array &p_arrays, LocalVector<SurfaceTool::Vertex> &ret, uint64_t *r_format) {
ERR_FAIL_INDEX(RS::ARRAY_WEIGHTS, p_arrays.size());
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;
}
uint64_t 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) {
v.tangent = Vector3(tarr[i * 4 + 0], tarr[i * 4 + 1], tarr[i * 4 + 2]);
float d = tarr[i * 4 + 3];
v.binormal = v.normal.cross(v.tangent).normalized() * 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, uint64_t &lformat) {
create_vertex_array_from_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_arrays(const Array &p_arrays, Mesh::PrimitiveType p_primitive_type) {
clear();
primitive = p_primitive_type;
_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_triangle_arrays(const Array &p_arrays) {
create_from_arrays(p_arrays, Mesh::PRIMITIVE_TRIANGLES);
}
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);