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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifdef WITH_OPENVDB
# include <openvdb/openvdb.h>
#endif
#include "BLI_float4x4.hh"
#include "DNA_mesh_types.h"
#include "DNA_pointcloud_types.h"
#include "DNA_volume_types.h"
#include "BKE_mesh.h"
#include "BKE_pointcloud.h"
#include "BKE_spline.hh"
#include "BKE_volume.h"
#include "DEG_depsgraph_query.h"
#include "node_geometry_util.hh"
namespace blender::nodes {
static void geo_node_transform_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Geometry>(N_("Geometry"));
b.add_input<decl::Vector>(N_("Translation")).subtype(PROP_TRANSLATION);
b.add_input<decl::Vector>(N_("Rotation")).subtype(PROP_EULER);
b.add_input<decl::Vector>(N_("Scale")).default_value({1, 1, 1}).subtype(PROP_XYZ);
b.add_output<decl::Geometry>(N_("Geometry"));
}
static bool use_translate(const float3 rotation, const float3 scale)
{
if (compare_ff(rotation.length_squared(), 0.0f, 1e-9f) != 1) {
return false;
}
if (compare_ff(scale.x, 1.0f, 1e-9f) != 1 || compare_ff(scale.y, 1.0f, 1e-9f) != 1 ||
compare_ff(scale.z, 1.0f, 1e-9f) != 1) {
return false;
}
return true;
}
static void translate_mesh(Mesh &mesh, const float3 translation)
{
if (!translation.is_zero()) {
BKE_mesh_translate(&mesh, translation, false);
}
}
static void transform_mesh(Mesh &mesh, const float4x4 &transform)
{
BKE_mesh_transform(&mesh, transform.values, false);
BKE_mesh_normals_tag_dirty(&mesh);
}
void transform_mesh(Mesh &mesh,
const float3 translation,
const float3 rotation,
const float3 scale)
{
const float4x4 matrix = float4x4::from_loc_eul_scale(translation, rotation, scale);
transform_mesh(mesh, matrix);
}
static void translate_pointcloud(PointCloud &pointcloud, const float3 translation)
{
CustomData_duplicate_referenced_layer(&pointcloud.pdata, CD_PROP_FLOAT3, pointcloud.totpoint);
BKE_pointcloud_update_customdata_pointers(&pointcloud);
for (const int i : IndexRange(pointcloud.totpoint)) {
add_v3_v3(pointcloud.co[i], translation);
}
}
static void transform_pointcloud(PointCloud &pointcloud, const float4x4 &transform)
{
CustomData_duplicate_referenced_layer(&pointcloud.pdata, CD_PROP_FLOAT3, pointcloud.totpoint);
BKE_pointcloud_update_customdata_pointers(&pointcloud);
for (const int i : IndexRange(pointcloud.totpoint)) {
float3 &co = *(float3 *)pointcloud.co[i];
co = transform * co;
}
}
static void translate_instances(InstancesComponent &instances, const float3 translation)
{
MutableSpan<float4x4> transforms = instances.instance_transforms();
for (float4x4 &transform : transforms) {
add_v3_v3(transform.ptr()[3], translation);
}
}
static void transform_instances(InstancesComponent &instances, const float4x4 &transform)
{
MutableSpan<float4x4> instance_transforms = instances.instance_transforms();
for (float4x4 &instance_transform : instance_transforms) {
instance_transform = transform * instance_transform;
}
}
static void transform_volume(Volume &volume, const float4x4 &transform, const Depsgraph &depsgraph)
{
#ifdef WITH_OPENVDB
/* Scaling an axis to zero is not supported for volumes. */
const float3 translation = transform.translation();
const float3 rotation = transform.to_euler();
const float3 scale = transform.scale();
const float3 limited_scale = {
(scale.x == 0.0f) ? FLT_EPSILON : scale.x,
(scale.y == 0.0f) ? FLT_EPSILON : scale.y,
(scale.z == 0.0f) ? FLT_EPSILON : scale.z,
};
const float4x4 scale_limited_transform = float4x4::from_loc_eul_scale(
translation, rotation, limited_scale);
const Main *bmain = DEG_get_bmain(&depsgraph);
BKE_volume_load(&volume, bmain);
openvdb::Mat4s vdb_matrix;
memcpy(vdb_matrix.asPointer(), &scale_limited_transform, sizeof(float[4][4]));
openvdb::Mat4d vdb_matrix_d{vdb_matrix};
const int num_grids = BKE_volume_num_grids(&volume);
for (const int i : IndexRange(num_grids)) {
VolumeGrid *volume_grid = BKE_volume_grid_get_for_write(&volume, i);
openvdb::GridBase::Ptr grid = BKE_volume_grid_openvdb_for_write(&volume, volume_grid, false);
openvdb::math::Transform &grid_transform = grid->transform();
grid_transform.postMult(vdb_matrix_d);
}
#else
UNUSED_VARS(volume, transform, depsgraph);
#endif
}
static void translate_volume(Volume &volume, const float3 translation, const Depsgraph &depsgraph)
{
transform_volume(volume, float4x4::from_location(translation), depsgraph);
}
void transform_geometry_set(GeometrySet &geometry,
const float4x4 &transform,
const Depsgraph &depsgraph)
{
if (CurveEval *curve = geometry.get_curve_for_write()) {
curve->transform(transform);
}
if (Mesh *mesh = geometry.get_mesh_for_write()) {
transform_mesh(*mesh, transform);
}
if (PointCloud *pointcloud = geometry.get_pointcloud_for_write()) {
transform_pointcloud(*pointcloud, transform);
}
if (Volume *volume = geometry.get_volume_for_write()) {
transform_volume(*volume, transform, depsgraph);
}
if (geometry.has_instances()) {
transform_instances(geometry.get_component_for_write<InstancesComponent>(), transform);
}
}
static void translate_geometry_set(GeometrySet &geometry,
const float3 translation,
const Depsgraph &depsgraph)
{
if (CurveEval *curve = geometry.get_curve_for_write()) {
curve->translate(translation);
}
if (Mesh *mesh = geometry.get_mesh_for_write()) {
translate_mesh(*mesh, translation);
}
if (PointCloud *pointcloud = geometry.get_pointcloud_for_write()) {
translate_pointcloud(*pointcloud, translation);
}
if (Volume *volume = geometry.get_volume_for_write()) {
translate_volume(*volume, translation, depsgraph);
}
if (geometry.has_instances()) {
translate_instances(geometry.get_component_for_write<InstancesComponent>(), translation);
}
}
static void geo_node_transform_exec(GeoNodeExecParams params)
{
GeometrySet geometry_set = params.extract_input<GeometrySet>("Geometry");
const float3 translation = params.extract_input<float3>("Translation");
const float3 rotation = params.extract_input<float3>("Rotation");
const float3 scale = params.extract_input<float3>("Scale");
/* Use only translation if rotation and scale don't apply. */
if (use_translate(rotation, scale)) {
translate_geometry_set(geometry_set, translation, *params.depsgraph());
}
else {
transform_geometry_set(geometry_set,
float4x4::from_loc_eul_scale(translation, rotation, scale),
*params.depsgraph());
}
params.set_output("Geometry", std::move(geometry_set));
}
} // namespace blender::nodes
void register_node_type_geo_transform()
{
static bNodeType ntype;
geo_node_type_base(&ntype, GEO_NODE_TRANSFORM, "Transform", NODE_CLASS_GEOMETRY, 0);
ntype.declare = blender::nodes::geo_node_transform_declare;
ntype.geometry_node_execute = blender::nodes::geo_node_transform_exec;
nodeRegisterType(&ntype);
}
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