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/*************************************************************************/
/* pivot_transform.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 "pivot_transform.h"
#include "tools/import_utils.h"
void PivotTransform::ReadTransformChain() {
const FBXDocParser::PropertyTable *props = fbx_model->Props();
const FBXDocParser::Model::RotOrder &rot = fbx_model->RotationOrder();
const FBXDocParser::TransformInheritance &inheritType = fbx_model->InheritType();
inherit_type = inheritType; // copy the inherit type we need it in the second step.
print_verbose("Model: " + String(fbx_model->Name().c_str()) + " Has inherit type: " + itos(fbx_model->InheritType()));
bool ok = false;
raw_pre_rotation = ImportUtils::safe_import_vector3(FBXDocParser::PropertyGet<Vector3>(props, "PreRotation", ok));
if (ok) {
pre_rotation = ImportUtils::EulerToQuaternion(rot, ImportUtils::deg2rad(raw_pre_rotation));
print_verbose("valid pre_rotation: " + raw_pre_rotation + " euler conversion: " + (pre_rotation.get_euler() * (180 / Math_PI)));
}
raw_post_rotation = ImportUtils::safe_import_vector3(FBXDocParser::PropertyGet<Vector3>(props, "PostRotation", ok));
if (ok) {
post_rotation = ImportUtils::EulerToQuaternion(FBXDocParser::Model::RotOrder_EulerXYZ, ImportUtils::deg2rad(raw_post_rotation));
print_verbose("valid post_rotation: " + raw_post_rotation + " euler conversion: " + (pre_rotation.get_euler() * (180 / Math_PI)));
}
const Vector3 &RotationPivot = ImportUtils::safe_import_vector3(FBXDocParser::PropertyGet<Vector3>(props, "RotationPivot", ok));
if (ok) {
rotation_pivot = ImportUtils::FixAxisConversions(RotationPivot);
}
const Vector3 &RotationOffset = ImportUtils::safe_import_vector3(FBXDocParser::PropertyGet<Vector3>(props, "RotationOffset", ok));
if (ok) {
rotation_offset = ImportUtils::FixAxisConversions(RotationOffset);
}
const Vector3 &ScalingOffset = ImportUtils::safe_import_vector3(FBXDocParser::PropertyGet<Vector3>(props, "ScalingOffset", ok));
if (ok) {
scaling_offset = ImportUtils::FixAxisConversions(ScalingOffset);
}
const Vector3 &ScalingPivot = ImportUtils::safe_import_vector3(FBXDocParser::PropertyGet<Vector3>(props, "ScalingPivot", ok));
if (ok) {
scaling_pivot = ImportUtils::FixAxisConversions(ScalingPivot);
}
const Vector3 &Translation = ImportUtils::safe_import_vector3(FBXDocParser::PropertyGet<Vector3>(props, "Lcl Translation", ok));
if (ok) {
translation = ImportUtils::FixAxisConversions(Translation);
}
raw_rotation = ImportUtils::safe_import_vector3(FBXDocParser::PropertyGet<Vector3>(props, "Lcl Rotation", ok));
if (ok) {
rotation = ImportUtils::EulerToQuaternion(rot, ImportUtils::deg2rad(raw_rotation));
}
const Vector3 &Scaling = ImportUtils::safe_import_vector3(FBXDocParser::PropertyGet<Vector3>(props, "Lcl Scaling", ok));
if (ok) {
scaling = Scaling;
}
const Vector3 &GeometricScaling = ImportUtils::safe_import_vector3(FBXDocParser::PropertyGet<Vector3>(props, "GeometricScaling", ok));
if (ok) {
geometric_scaling = GeometricScaling;
} else {
geometric_scaling = Vector3(0, 0, 0);
}
const Vector3 &GeometricRotation = ImportUtils::safe_import_vector3(FBXDocParser::PropertyGet<Vector3>(props, "GeometricRotation", ok));
if (ok) {
geometric_rotation = ImportUtils::EulerToQuaternion(rot, ImportUtils::deg2rad(GeometricRotation));
} else {
geometric_rotation = Quat();
}
const Vector3 &GeometricTranslation = ImportUtils::safe_import_vector3(FBXDocParser::PropertyGet<Vector3>(props, "GeometricTranslation", ok));
if (ok) {
geometric_translation = ImportUtils::FixAxisConversions(GeometricTranslation);
} else {
geometric_translation = Vector3(0, 0, 0);
}
if (geometric_rotation != Quat()) {
print_error("geometric rotation is unsupported!");
//CRASH_COND(true);
}
if (!geometric_scaling.is_equal_approx(Vector3(1, 1, 1))) {
print_error("geometric scaling is unsupported!");
//CRASH_COND(true);
}
if (!geometric_translation.is_equal_approx(Vector3(0, 0, 0))) {
print_error("geometric translation is unsupported.");
//CRASH_COND(true);
}
}
Transform PivotTransform::ComputeLocalTransform(Vector3 p_translation, Quat p_rotation, Vector3 p_scaling) const {
Transform T, Roff, Rp, Soff, Sp, S;
// Here I assume this is the operation which needs done.
// Its WorldTransform * V
// Origin pivots
T.set_origin(p_translation);
Roff.set_origin(rotation_offset);
Rp.set_origin(rotation_pivot);
Soff.set_origin(scaling_offset);
Sp.set_origin(scaling_pivot);
// Scaling node
S.scale(p_scaling);
// Rotation pivots
Transform Rpre = Transform(pre_rotation);
Transform R = Transform(p_rotation);
Transform Rpost = Transform(post_rotation);
return T * Roff * Rp * Rpre * R * Rpost.affine_inverse() * Rp.affine_inverse() * Soff * Sp * S * Sp.affine_inverse();
}
Transform PivotTransform::ComputeGlobalTransform(Transform t) const {
Vector3 pos = t.origin;
Vector3 scale = t.basis.get_scale();
Quat rot = t.basis.get_rotation_quat();
return ComputeGlobalTransform(pos, rot, scale);
}
Transform PivotTransform::ComputeLocalTransform(Transform t) const {
Vector3 pos = t.origin;
Vector3 scale = t.basis.get_scale();
Quat rot = t.basis.get_rotation_quat();
return ComputeLocalTransform(pos, rot, scale);
}
Transform PivotTransform::ComputeGlobalTransform(Vector3 p_translation, Quat p_rotation, Vector3 p_scaling) const {
Transform T, Roff, Rp, Soff, Sp, S;
// Here I assume this is the operation which needs done.
// Its WorldTransform * V
// Origin pivots
T.set_origin(p_translation);
Roff.set_origin(rotation_offset);
Rp.set_origin(rotation_pivot);
Soff.set_origin(scaling_offset);
Sp.set_origin(scaling_pivot);
// Scaling node
S.scale(p_scaling);
// Rotation pivots
Transform Rpre = Transform(pre_rotation);
Transform R = Transform(p_rotation);
Transform Rpost = Transform(post_rotation);
Transform parent_global_xform;
Transform parent_local_scaling_m;
if (parent_transform.is_valid()) {
parent_global_xform = parent_transform->GlobalTransform;
parent_local_scaling_m = parent_transform->Local_Scaling_Matrix;
}
Transform local_rotation_m, parent_global_rotation_m;
Quat parent_global_rotation = parent_global_xform.basis.get_rotation_quat();
parent_global_rotation_m.basis.set_quat(parent_global_rotation);
local_rotation_m = Rpre * R * Rpost;
//Basis parent_global_rotation = Basis(parent_global_xform.get_basis().get_rotation_quat().normalized());
Transform local_shear_scaling, parent_shear_scaling, parent_shear_rotation, parent_shear_translation;
Vector3 parent_translation = parent_global_xform.get_origin();
parent_shear_translation.origin = parent_translation;
parent_shear_rotation = parent_shear_translation.affine_inverse() * parent_global_xform;
parent_shear_scaling = parent_global_rotation_m.affine_inverse() * parent_shear_rotation;
local_shear_scaling = S;
// Inherit type handler - we don't care about T here, just reordering RSrs etc.
Transform global_rotation_scale;
if (inherit_type == FBXDocParser::Transform_RrSs) {
global_rotation_scale = parent_global_rotation_m * local_rotation_m * parent_shear_scaling * local_shear_scaling;
} else if (inherit_type == FBXDocParser::Transform_RSrs) {
global_rotation_scale = parent_global_rotation_m * parent_shear_scaling * local_rotation_m * local_shear_scaling;
} else if (inherit_type == FBXDocParser::Transform_Rrs) {
Transform parent_global_shear_m_noLocal = parent_shear_scaling * parent_local_scaling_m.affine_inverse();
global_rotation_scale = parent_global_rotation_m * local_rotation_m * parent_global_shear_m_noLocal * local_shear_scaling;
}
Transform local_transform = T * Roff * Rp * Rpre * R * Rpost.affine_inverse() * Rp.affine_inverse() * Soff * Sp * S * Sp.affine_inverse();
//Transform local_translation_pivoted = Transform(Basis(), LocalTransform.origin);
// manual hack to force SSC not to be compensated for - until we can handle it properly with tests
return parent_global_xform * local_transform;
}
void PivotTransform::ComputePivotTransform() {
Transform T, Roff, Rp, Soff, Sp, S;
// Here I assume this is the operation which needs done.
// Its WorldTransform * V
// Origin pivots
T.set_origin(translation);
Roff.set_origin(rotation_offset);
Rp.set_origin(rotation_pivot);
Soff.set_origin(scaling_offset);
Sp.set_origin(scaling_pivot);
// Scaling node
if (!scaling.is_equal_approx(Vector3())) {
S.scale(scaling);
} else {
S.scale(Vector3(1, 1, 1));
}
Local_Scaling_Matrix = S; // copy for when node / child is looking for the value of this.
// Rotation pivots
Transform Rpre = Transform(pre_rotation);
Transform R = Transform(rotation);
Transform Rpost = Transform(post_rotation);
Transform parent_global_xform;
Transform parent_local_scaling_m;
if (parent_transform.is_valid()) {
parent_global_xform = parent_transform->GlobalTransform;
parent_local_scaling_m = parent_transform->Local_Scaling_Matrix;
}
Transform local_rotation_m, parent_global_rotation_m;
Quat parent_global_rotation = parent_global_xform.basis.get_rotation_quat();
parent_global_rotation_m.basis.set_quat(parent_global_rotation);
local_rotation_m = Rpre * R * Rpost;
//Basis parent_global_rotation = Basis(parent_global_xform.get_basis().get_rotation_quat().normalized());
Transform local_shear_scaling, parent_shear_scaling, parent_shear_rotation, parent_shear_translation;
Vector3 parent_translation = parent_global_xform.get_origin();
parent_shear_translation.origin = parent_translation;
parent_shear_rotation = parent_shear_translation.affine_inverse() * parent_global_xform;
parent_shear_scaling = parent_global_rotation_m.affine_inverse() * parent_shear_rotation;
local_shear_scaling = S;
// Inherit type handler - we don't care about T here, just reordering RSrs etc.
Transform global_rotation_scale;
if (inherit_type == FBXDocParser::Transform_RrSs) {
global_rotation_scale = parent_global_rotation_m * local_rotation_m * parent_shear_scaling * local_shear_scaling;
} else if (inherit_type == FBXDocParser::Transform_RSrs) {
global_rotation_scale = parent_global_rotation_m * parent_shear_scaling * local_rotation_m * local_shear_scaling;
} else if (inherit_type == FBXDocParser::Transform_Rrs) {
Transform parent_global_shear_m_noLocal = parent_shear_scaling * parent_local_scaling_m.inverse();
global_rotation_scale = parent_global_rotation_m * local_rotation_m * parent_global_shear_m_noLocal * local_shear_scaling;
}
LocalTransform = Transform();
LocalTransform = T * Roff * Rp * Rpre * R * Rpost.affine_inverse() * Rp.affine_inverse() * Soff * Sp * S * Sp.affine_inverse();
ERR_FAIL_COND_MSG(LocalTransform.basis.determinant() == 0, "invalid scale reset");
Transform local_translation_pivoted = Transform(Basis(), LocalTransform.origin);
GlobalTransform = Transform();
//GlobalTransform = parent_global_xform * LocalTransform;
Transform global_origin = Transform(Basis(), parent_translation);
GlobalTransform = (global_origin * local_translation_pivoted) * global_rotation_scale;
ImportUtils::debug_xform("local xform calculation", LocalTransform);
print_verbose("scale of node: " + S.basis.get_scale_local());
print_verbose("---------------------------------------------------------------");
}
void PivotTransform::Execute() {
ReadTransformChain();
ComputePivotTransform();
ImportUtils::debug_xform("global xform: ", GlobalTransform);
computed_global_xform = true;
}
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