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Happy new year to the wonderful Godot community!
2020 has been a tough year for most of us personally, but a good year for
Godot development nonetheless with a huge amount of work done towards Godot
4.0 and great improvements backported to the long-lived 3.2 branch.
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294 lines
13 KiB
C++
294 lines
13 KiB
C++
/*************************************************************************/
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/* pivot_transform.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "pivot_transform.h"
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#include "tools/import_utils.h"
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void PivotTransform::ReadTransformChain() {
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const FBXDocParser::PropertyTable *props = fbx_model->Props();
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const FBXDocParser::Model::RotOrder &rot = fbx_model->RotationOrder();
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const FBXDocParser::TransformInheritance &inheritType = fbx_model->InheritType();
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inherit_type = inheritType; // copy the inherit type we need it in the second step.
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print_verbose("Model: " + String(fbx_model->Name().c_str()) + " Has inherit type: " + itos(fbx_model->InheritType()));
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bool ok = false;
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raw_pre_rotation = ImportUtils::safe_import_vector3(FBXDocParser::PropertyGet<Vector3>(props, "PreRotation", ok));
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if (ok) {
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pre_rotation = ImportUtils::EulerToQuaternion(rot, ImportUtils::deg2rad(raw_pre_rotation));
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print_verbose("valid pre_rotation: " + raw_pre_rotation + " euler conversion: " + (pre_rotation.get_euler() * (180 / Math_PI)));
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}
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raw_post_rotation = ImportUtils::safe_import_vector3(FBXDocParser::PropertyGet<Vector3>(props, "PostRotation", ok));
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if (ok) {
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post_rotation = ImportUtils::EulerToQuaternion(FBXDocParser::Model::RotOrder_EulerXYZ, ImportUtils::deg2rad(raw_post_rotation));
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print_verbose("valid post_rotation: " + raw_post_rotation + " euler conversion: " + (pre_rotation.get_euler() * (180 / Math_PI)));
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}
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const Vector3 &RotationPivot = ImportUtils::safe_import_vector3(FBXDocParser::PropertyGet<Vector3>(props, "RotationPivot", ok));
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if (ok) {
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rotation_pivot = ImportUtils::FixAxisConversions(RotationPivot);
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}
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const Vector3 &RotationOffset = ImportUtils::safe_import_vector3(FBXDocParser::PropertyGet<Vector3>(props, "RotationOffset", ok));
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if (ok) {
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rotation_offset = ImportUtils::FixAxisConversions(RotationOffset);
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}
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const Vector3 &ScalingOffset = ImportUtils::safe_import_vector3(FBXDocParser::PropertyGet<Vector3>(props, "ScalingOffset", ok));
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if (ok) {
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scaling_offset = ImportUtils::FixAxisConversions(ScalingOffset);
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}
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const Vector3 &ScalingPivot = ImportUtils::safe_import_vector3(FBXDocParser::PropertyGet<Vector3>(props, "ScalingPivot", ok));
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if (ok) {
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scaling_pivot = ImportUtils::FixAxisConversions(ScalingPivot);
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}
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const Vector3 &Translation = ImportUtils::safe_import_vector3(FBXDocParser::PropertyGet<Vector3>(props, "Lcl Translation", ok));
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if (ok) {
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translation = ImportUtils::FixAxisConversions(Translation);
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}
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raw_rotation = ImportUtils::safe_import_vector3(FBXDocParser::PropertyGet<Vector3>(props, "Lcl Rotation", ok));
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if (ok) {
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rotation = ImportUtils::EulerToQuaternion(rot, ImportUtils::deg2rad(raw_rotation));
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}
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const Vector3 &Scaling = ImportUtils::safe_import_vector3(FBXDocParser::PropertyGet<Vector3>(props, "Lcl Scaling", ok));
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if (ok) {
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scaling = Scaling;
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}
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const Vector3 &GeometricScaling = ImportUtils::safe_import_vector3(FBXDocParser::PropertyGet<Vector3>(props, "GeometricScaling", ok));
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if (ok) {
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geometric_scaling = GeometricScaling;
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} else {
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geometric_scaling = Vector3(0, 0, 0);
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}
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const Vector3 &GeometricRotation = ImportUtils::safe_import_vector3(FBXDocParser::PropertyGet<Vector3>(props, "GeometricRotation", ok));
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if (ok) {
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geometric_rotation = ImportUtils::EulerToQuaternion(rot, ImportUtils::deg2rad(GeometricRotation));
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} else {
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geometric_rotation = Quat();
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}
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const Vector3 &GeometricTranslation = ImportUtils::safe_import_vector3(FBXDocParser::PropertyGet<Vector3>(props, "GeometricTranslation", ok));
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if (ok) {
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geometric_translation = ImportUtils::FixAxisConversions(GeometricTranslation);
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} else {
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geometric_translation = Vector3(0, 0, 0);
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}
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if (geometric_rotation != Quat()) {
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print_error("geometric rotation is unsupported!");
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//CRASH_COND(true);
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}
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if (!geometric_scaling.is_equal_approx(Vector3(1, 1, 1))) {
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print_error("geometric scaling is unsupported!");
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//CRASH_COND(true);
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}
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if (!geometric_translation.is_equal_approx(Vector3(0, 0, 0))) {
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print_error("geometric translation is unsupported.");
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//CRASH_COND(true);
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}
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}
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Transform PivotTransform::ComputeLocalTransform(Vector3 p_translation, Quat p_rotation, Vector3 p_scaling) const {
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Transform T, Roff, Rp, Soff, Sp, S;
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// Here I assume this is the operation which needs done.
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// Its WorldTransform * V
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// Origin pivots
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T.set_origin(p_translation);
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Roff.set_origin(rotation_offset);
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Rp.set_origin(rotation_pivot);
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Soff.set_origin(scaling_offset);
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Sp.set_origin(scaling_pivot);
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// Scaling node
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S.scale(p_scaling);
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// Rotation pivots
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Transform Rpre = Transform(pre_rotation);
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Transform R = Transform(p_rotation);
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Transform Rpost = Transform(post_rotation);
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return T * Roff * Rp * Rpre * R * Rpost.affine_inverse() * Rp.affine_inverse() * Soff * Sp * S * Sp.affine_inverse();
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}
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Transform PivotTransform::ComputeGlobalTransform(Transform t) const {
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Vector3 pos = t.origin;
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Vector3 scale = t.basis.get_scale();
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Quat rot = t.basis.get_rotation_quat();
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return ComputeGlobalTransform(pos, rot, scale);
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}
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Transform PivotTransform::ComputeLocalTransform(Transform t) const {
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Vector3 pos = t.origin;
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Vector3 scale = t.basis.get_scale();
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Quat rot = t.basis.get_rotation_quat();
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return ComputeLocalTransform(pos, rot, scale);
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}
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Transform PivotTransform::ComputeGlobalTransform(Vector3 p_translation, Quat p_rotation, Vector3 p_scaling) const {
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Transform T, Roff, Rp, Soff, Sp, S;
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// Here I assume this is the operation which needs done.
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// Its WorldTransform * V
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// Origin pivots
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T.set_origin(p_translation);
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Roff.set_origin(rotation_offset);
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Rp.set_origin(rotation_pivot);
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Soff.set_origin(scaling_offset);
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Sp.set_origin(scaling_pivot);
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// Scaling node
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S.scale(p_scaling);
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// Rotation pivots
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Transform Rpre = Transform(pre_rotation);
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Transform R = Transform(p_rotation);
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Transform Rpost = Transform(post_rotation);
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Transform parent_global_xform;
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Transform parent_local_scaling_m;
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if (parent_transform.is_valid()) {
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parent_global_xform = parent_transform->GlobalTransform;
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parent_local_scaling_m = parent_transform->Local_Scaling_Matrix;
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}
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Transform local_rotation_m, parent_global_rotation_m;
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Quat parent_global_rotation = parent_global_xform.basis.get_rotation_quat();
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parent_global_rotation_m.basis.set_quat(parent_global_rotation);
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local_rotation_m = Rpre * R * Rpost;
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//Basis parent_global_rotation = Basis(parent_global_xform.get_basis().get_rotation_quat().normalized());
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Transform local_shear_scaling, parent_shear_scaling, parent_shear_rotation, parent_shear_translation;
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Vector3 parent_translation = parent_global_xform.get_origin();
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parent_shear_translation.origin = parent_translation;
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parent_shear_rotation = parent_shear_translation.affine_inverse() * parent_global_xform;
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parent_shear_scaling = parent_global_rotation_m.affine_inverse() * parent_shear_rotation;
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local_shear_scaling = S;
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// Inherit type handler - we don't care about T here, just reordering RSrs etc.
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Transform global_rotation_scale;
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if (inherit_type == FBXDocParser::Transform_RrSs) {
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global_rotation_scale = parent_global_rotation_m * local_rotation_m * parent_shear_scaling * local_shear_scaling;
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} else if (inherit_type == FBXDocParser::Transform_RSrs) {
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global_rotation_scale = parent_global_rotation_m * parent_shear_scaling * local_rotation_m * local_shear_scaling;
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} else if (inherit_type == FBXDocParser::Transform_Rrs) {
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Transform parent_global_shear_m_noLocal = parent_shear_scaling * parent_local_scaling_m.affine_inverse();
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global_rotation_scale = parent_global_rotation_m * local_rotation_m * parent_global_shear_m_noLocal * local_shear_scaling;
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}
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Transform local_transform = T * Roff * Rp * Rpre * R * Rpost.affine_inverse() * Rp.affine_inverse() * Soff * Sp * S * Sp.affine_inverse();
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//Transform local_translation_pivoted = Transform(Basis(), LocalTransform.origin);
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// manual hack to force SSC not to be compensated for - until we can handle it properly with tests
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return parent_global_xform * local_transform;
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}
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void PivotTransform::ComputePivotTransform() {
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Transform T, Roff, Rp, Soff, Sp, S;
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// Here I assume this is the operation which needs done.
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// Its WorldTransform * V
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// Origin pivots
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T.set_origin(translation);
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Roff.set_origin(rotation_offset);
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Rp.set_origin(rotation_pivot);
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Soff.set_origin(scaling_offset);
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Sp.set_origin(scaling_pivot);
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// Scaling node
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if (!scaling.is_equal_approx(Vector3())) {
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S.scale(scaling);
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} else {
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S.scale(Vector3(1, 1, 1));
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}
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Local_Scaling_Matrix = S; // copy for when node / child is looking for the value of this.
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// Rotation pivots
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Transform Rpre = Transform(pre_rotation);
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Transform R = Transform(rotation);
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Transform Rpost = Transform(post_rotation);
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Transform parent_global_xform;
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Transform parent_local_scaling_m;
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if (parent_transform.is_valid()) {
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parent_global_xform = parent_transform->GlobalTransform;
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parent_local_scaling_m = parent_transform->Local_Scaling_Matrix;
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}
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Transform local_rotation_m, parent_global_rotation_m;
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Quat parent_global_rotation = parent_global_xform.basis.get_rotation_quat();
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parent_global_rotation_m.basis.set_quat(parent_global_rotation);
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local_rotation_m = Rpre * R * Rpost;
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//Basis parent_global_rotation = Basis(parent_global_xform.get_basis().get_rotation_quat().normalized());
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Transform local_shear_scaling, parent_shear_scaling, parent_shear_rotation, parent_shear_translation;
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Vector3 parent_translation = parent_global_xform.get_origin();
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parent_shear_translation.origin = parent_translation;
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parent_shear_rotation = parent_shear_translation.affine_inverse() * parent_global_xform;
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parent_shear_scaling = parent_global_rotation_m.affine_inverse() * parent_shear_rotation;
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local_shear_scaling = S;
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// Inherit type handler - we don't care about T here, just reordering RSrs etc.
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Transform global_rotation_scale;
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if (inherit_type == FBXDocParser::Transform_RrSs) {
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global_rotation_scale = parent_global_rotation_m * local_rotation_m * parent_shear_scaling * local_shear_scaling;
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} else if (inherit_type == FBXDocParser::Transform_RSrs) {
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global_rotation_scale = parent_global_rotation_m * parent_shear_scaling * local_rotation_m * local_shear_scaling;
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} else if (inherit_type == FBXDocParser::Transform_Rrs) {
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Transform parent_global_shear_m_noLocal = parent_shear_scaling * parent_local_scaling_m.inverse();
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global_rotation_scale = parent_global_rotation_m * local_rotation_m * parent_global_shear_m_noLocal * local_shear_scaling;
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}
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LocalTransform = Transform();
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LocalTransform = T * Roff * Rp * Rpre * R * Rpost.affine_inverse() * Rp.affine_inverse() * Soff * Sp * S * Sp.affine_inverse();
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ERR_FAIL_COND_MSG(LocalTransform.basis.determinant() == 0, "invalid scale reset");
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Transform local_translation_pivoted = Transform(Basis(), LocalTransform.origin);
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GlobalTransform = Transform();
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//GlobalTransform = parent_global_xform * LocalTransform;
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Transform global_origin = Transform(Basis(), parent_translation);
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GlobalTransform = (global_origin * local_translation_pivoted) * global_rotation_scale;
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ImportUtils::debug_xform("local xform calculation", LocalTransform);
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print_verbose("scale of node: " + S.basis.get_scale_local());
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print_verbose("---------------------------------------------------------------");
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}
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void PivotTransform::Execute() {
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ReadTransformChain();
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ComputePivotTransform();
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ImportUtils::debug_xform("global xform: ", GlobalTransform);
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computed_global_xform = true;
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}
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