Added gsoc-2012 collada improvements from bratwurst branch

1 files changed, 598 insertions, 0 deletions

diff --git a/source/blender/collada/ControllerExporter.cpp b/source/blender/collada/ControllerExporter.cpp
new file mode 100644
index 00000000000..d41c907ee98
--- /dev/null
+++ b/source/blender/collada/ControllerExporter.cpp
@@ -0,0 +1,598 @@
+/*
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * 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.
+ *
+ * Contributor(s): Chingiz Dyussenov, Arystanbek Dyussenov, Jan Diederich, Tod Liverseed,
+ *                 Nathan Letwory, Sukhitha Jayathilake
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file blender/collada/ControllerExporter.cpp
+ *  \ingroup collada
+ */
+
+#include "COLLADASWBaseInputElement.h"
+#include "COLLADASWInstanceController.h"
+#include "COLLADASWPrimitves.h"
+#include "COLLADASWSource.h"
+
+#include "DNA_action_types.h"
+#include "DNA_meshdata_types.h"
+#include "DNA_modifier_types.h"
+
+#include "BKE_action.h"
+#include "BKE_armature.h"
+
+extern "C" {
+#include "BKE_main.h"
+#include "BKE_mesh.h"
+#include "BKE_global.h"
+#include "BKE_library.h"
+}
+
+#include "ED_armature.h"
+
+#include "BLI_listbase.h"
+
+#include "GeometryExporter.h"
+#include "ArmatureExporter.h"
+#include "ControllerExporter.h"
+#include "SceneExporter.h"
+
+#include "collada_utils.h"
+
+// XXX exporter writes wrong data for shared armatures.  A separate
+// controller should be written for each armature-mesh binding how do
+// we make controller ids then?
+ControllerExporter::ControllerExporter(COLLADASW::StreamWriter *sw, const ExportSettings *export_settings) : COLLADASW::LibraryControllers(sw), export_settings(export_settings) {
+}
+
+bool ControllerExporter::is_skinned_mesh(Object *ob)
+{
+	return bc_get_assigned_armature(ob) != NULL;
+}
+
+
+void ControllerExporter::write_bone_URLs(COLLADASW::InstanceController &ins, Object *ob_arm, Bone *bone)
+{
+	if (bc_is_root_bone(bone, this->export_settings->deform_bones_only))
+		ins.addSkeleton(COLLADABU::URI(COLLADABU::Utils::EMPTY_STRING, get_joint_id(bone, ob_arm)));
+	else {
+		for (Bone *child = (Bone *)bone->childbase.first; child; child = child->next) {
+			write_bone_URLs(ins, ob_arm, child);
+		}
+	}
+}
+
+bool ControllerExporter::add_instance_controller(Object *ob)
+{
+	Object *ob_arm = bc_get_assigned_armature(ob);
+	bArmature *arm = (bArmature *)ob_arm->data;
+
+	const std::string& controller_id = get_controller_id(ob_arm, ob);
+
+	COLLADASW::InstanceController ins(mSW);
+	ins.setUrl(COLLADASW::URI(COLLADABU::Utils::EMPTY_STRING, controller_id));
+
+	Mesh *me = (Mesh *)ob->data;
+	if (!me->dvert) return false;
+
+	// write root bone URLs
+	Bone *bone;
+	for (bone = (Bone *)arm->bonebase.first; bone; bone = bone->next) {
+		write_bone_URLs(ins, ob_arm, bone);
+	}
+    
+	InstanceWriter::add_material_bindings(ins.getBindMaterial(), ob, this->export_settings->active_uv_only);
+		
+	ins.add();
+	return true;
+}
+
+void ControllerExporter::export_controllers(Scene *sce)
+{
+	scene = sce;
+
+	openLibrary();
+
+	GeometryFunctor gf;
+	gf.forEachMeshObjectInExportSet<ControllerExporter>(sce, *this, this->export_settings->export_set);
+
+	closeLibrary();
+}
+
+void ControllerExporter::operator()(Object *ob)
+{
+	Object *ob_arm = bc_get_assigned_armature(ob);
+	Key *key = BKE_key_from_object(ob);
+
+	if (ob_arm)
+		export_skin_controller(ob, ob_arm);
+	if(key){
+		export_morph_controller(ob, key);
+	}
+}
+#if 0
+
+bool ArmatureExporter::already_written(Object *ob_arm)
+{
+	return std::find(written_armatures.begin(), written_armatures.end(), ob_arm) != written_armatures.end();
+}
+
+void ArmatureExporter::wrote(Object *ob_arm)
+{
+	written_armatures.push_back(ob_arm);
+}
+
+void ArmatureExporter::find_objects_using_armature(Object *ob_arm, std::vector<Object *>& objects, Scene *sce)
+{
+	objects.clear();
+
+	Base *base = (Base *) sce->base.first;
+	while (base) {
+		Object *ob = base->object;
+		
+		if (ob->type == OB_MESH && get_assigned_armature(ob) == ob_arm) {
+			objects.push_back(ob);
+		}
+
+		base = base->next;
+	}
+}
+#endif
+
+std::string ControllerExporter::get_joint_sid(Bone *bone, Object *ob_arm)
+{
+	return get_joint_id(bone, ob_arm);
+}
+
+std::string ControllerExporter::get_controller_id(Object *ob_arm, Object *ob)
+{
+	return translate_id(id_name(ob_arm)) + "_" + translate_id(id_name(ob)) + SKIN_CONTROLLER_ID_SUFFIX;
+}
+
+std::string ControllerExporter::get_controller_id(Key *key, Object *ob)
+{
+	return translate_id(id_name(ob)) + MORPH_CONTROLLER_ID_SUFFIX;
+}
+
+// ob should be of type OB_MESH
+// both args are required
+void ControllerExporter::export_skin_controller(Object *ob, Object *ob_arm)
+{
+	// joint names
+	// joint inverse bind matrices
+	// vertex weights
+
+	// input:
+	// joint names: ob -> vertex group names
+	// vertex group weights: me->dvert -> groups -> index, weight
+
+#if 0
+	me->dvert :
+
+	typedef struct MDeformVert {
+		struct MDeformWeight *dw;
+		int totweight;
+		int flag;   // flag only in use for weightpaint now
+	} MDeformVert;
+
+	typedef struct MDeformWeight {
+		int def_nr;
+		float weight;
+	} MDeformWeight;
+#endif
+
+	bool use_instantiation = this->export_settings->use_object_instantiation;
+	Mesh *me;
+
+	if (this->export_settings->apply_modifiers) 
+		me = bc_to_mesh_apply_modifiers(scene, ob, this->export_settings->export_mesh_type);
+	else 
+		me = (Mesh *)ob->data;
+	
+	BKE_mesh_tessface_ensure(me);
+
+	if (!me->dvert) return;
+
+	std::string controller_name = id_name(ob_arm);
+	std::string controller_id = get_controller_id(ob_arm, ob);
+
+	openSkin(controller_id, controller_name,
+	         COLLADABU::URI(COLLADABU::Utils::EMPTY_STRING, get_geometry_id(ob, use_instantiation)));
+
+	add_bind_shape_mat(ob);
+
+	std::string joints_source_id = add_joints_source(ob_arm, &ob->defbase, controller_id);
+	std::string inv_bind_mat_source_id = add_inv_bind_mats_source(ob_arm, &ob->defbase, controller_id);
+
+	std::list<int> vcounts;
+	std::list<int> joints;
+	std::list<float> weights;
+
+	{
+		int i, j;
+
+		// def group index -> joint index
+		std::vector<int> joint_index_by_def_index;
+		bDeformGroup *def;
+
+		for (def = (bDeformGroup *)ob->defbase.first, i = 0, j = 0; def; def = def->next, i++) {
+			if (is_bone_defgroup(ob_arm, def))
+				joint_index_by_def_index.push_back(j++);
+			else
+				joint_index_by_def_index.push_back(-1);
+		}
+
+		for (i = 0; i < me->totvert; i++) {
+			MDeformVert *vert = &me->dvert[i];
+			std::map<int, float> jw;
+
+			// We're normalizing the weights later
+			float sumw = 0.0f;
+
+			for (j = 0; j < vert->totweight; j++) {
+				int joint_index = joint_index_by_def_index[vert->dw[j].def_nr];
+				if (joint_index != -1 && vert->dw[j].weight > 0.0f) {
+					jw[joint_index] += vert->dw[j].weight;
+					sumw += vert->dw[j].weight;
+				}
+			}
+
+			if (sumw > 0.0f) {
+				float invsumw = 1.0f / sumw;
+				vcounts.push_back(jw.size());
+				for (std::map<int, float>::iterator m = jw.begin(); m != jw.end(); ++m) {
+					joints.push_back((*m).first);
+					weights.push_back(invsumw * (*m).second);
+				}
+			}
+			else {
+				vcounts.push_back(0);
+#if 0
+				vcounts.push_back(1);
+				joints.push_back(-1);
+				weights.push_back(1.0f);
+#endif
+			}
+		}
+	}
+
+	std::string weights_source_id = add_weights_source(me, controller_id, weights);
+	add_joints_element(&ob->defbase, joints_source_id, inv_bind_mat_source_id);
+	add_vertex_weights_element(weights_source_id, joints_source_id, vcounts, joints);
+
+	if (this->export_settings->apply_modifiers)
+	{
+		BKE_libblock_free_us(&(G.main->mesh), me);
+	}
+	closeSkin();
+	closeController();
+}
+
+void ControllerExporter::export_morph_controller(Object *ob, Key *key)
+{
+	bool use_instantiation = this->export_settings->use_object_instantiation;
+	Mesh *me;
+
+	if (this->export_settings->apply_modifiers) {
+		me = bc_to_mesh_apply_modifiers(scene, ob, this->export_settings->export_mesh_type);
+	} 
+	else {
+		me = (Mesh *)ob->data;
+	}
+	BKE_mesh_tessface_ensure(me);
+
+	std::string controller_name = id_name(ob) + "-morph";
+	std::string controller_id = get_controller_id(key, ob);
+
+	openMorph(controller_id, controller_name,
+	         COLLADABU::URI(COLLADABU::Utils::EMPTY_STRING, get_geometry_id(ob, use_instantiation)));
+    
+	std::string targets_id = add_morph_targets(key, ob);
+	std::string morph_weights_id = add_morph_weights(key, ob);
+	
+	COLLADASW::TargetsElement targets(mSW);
+
+	COLLADASW::InputList &input = targets.getInputList();
+
+	input.push_back(COLLADASW::Input(COLLADASW::InputSemantic::MORPH_TARGET, // constant declared in COLLADASWInputList.h
+	                                 COLLADASW::URI(COLLADABU::Utils::EMPTY_STRING, targets_id)));
+	input.push_back(COLLADASW::Input(COLLADASW::InputSemantic::MORPH_WEIGHT,
+	                                 COLLADASW::URI(COLLADABU::Utils::EMPTY_STRING, morph_weights_id)));
+	targets.add();
+
+	if (this->export_settings->apply_modifiers)
+	{
+		BKE_libblock_free_us(&(G.main->mesh), me);
+	}
+    
+	//support for animations
+	//can also try the base element and param alternative
+	add_weight_extras(key);
+	closeMorph();
+	closeController();
+}
+
+std::string ControllerExporter::add_morph_targets(Key *key, Object *ob)
+{
+	std::string source_id = translate_id(id_name(ob)) + TARGETS_SOURCE_ID_SUFFIX;
+
+	COLLADASW::IdRefSource source(mSW);
+	source.setId(source_id);
+	source.setArrayId(source_id + ARRAY_ID_SUFFIX);
+	source.setAccessorCount(key->totkey - 1);
+	source.setAccessorStride(1);
+    
+	COLLADASW::SourceBase::ParameterNameList &param = source.getParameterNameList();
+	param.push_back("IDREF");
+
+	source.prepareToAppendValues();
+
+	KeyBlock * kb = (KeyBlock*)key->block.first;
+	//skip the basis
+	kb = kb->next;
+	for (; kb; kb = kb->next) {
+		std::string geom_id = get_geometry_id(ob, false) + "_morph_" + translate_id(kb->name);
+		source.appendValues(geom_id);
+
+	}
+
+	source.finish();
+
+	return source_id;
+}
+
+std::string ControllerExporter::add_morph_weights(Key *key, Object *ob)
+{
+	std::string source_id = translate_id(id_name(ob)) + WEIGHTS_SOURCE_ID_SUFFIX;
+
+	COLLADASW::FloatSourceF source(mSW);
+	source.setId(source_id);
+	source.setArrayId(source_id + ARRAY_ID_SUFFIX);
+	source.setAccessorCount(key->totkey - 1);
+	source.setAccessorStride(1);
+    
+	COLLADASW::SourceBase::ParameterNameList &param = source.getParameterNameList();
+	param.push_back("MORPH_WEIGHT");
+	
+	source.prepareToAppendValues();
+
+	KeyBlock * kb = (KeyBlock*)key->block.first;
+	//skip the basis
+	kb = kb->next;
+	for (; kb; kb = kb->next) {
+		float weight = kb->curval;
+		source.appendValues(weight);
+	}
+	source.finish();
+
+	return source_id;
+}
+
+//Added to implemente support for animations.
+void ControllerExporter::add_weight_extras(Key *key){
+	// can also try the base element and param alternative
+	COLLADASW::BaseExtraTechnique extra;
+	
+	KeyBlock * kb = (KeyBlock*)key->block.first;
+	//skip the basis
+	kb = kb->next;
+	for (; kb; kb = kb->next) {
+		float weight = kb->curval;
+		extra.addExtraTechniqueParameter ("KHR", "morph_weights" , 0.000, "MORPH_WEIGHT_TO_TARGET");
+	}
+}
+
+
+
+void ControllerExporter::add_joints_element(ListBase *defbase,
+                                          const std::string& joints_source_id, const std::string& inv_bind_mat_source_id)
+{
+	COLLADASW::JointsElement joints(mSW);
+	COLLADASW::InputList &input = joints.getInputList();
+
+	input.push_back(COLLADASW::Input(COLLADASW::InputSemantic::JOINT, // constant declared in COLLADASWInputList.h
+	                                 COLLADASW::URI(COLLADABU::Utils::EMPTY_STRING, joints_source_id)));
+	input.push_back(COLLADASW::Input(COLLADASW::InputSemantic::BINDMATRIX,
+	                                 COLLADASW::URI(COLLADABU::Utils::EMPTY_STRING, inv_bind_mat_source_id)));
+	joints.add();
+}
+
+void ControllerExporter::add_bind_shape_mat(Object *ob)
+{
+	double bind_mat[4][4];
+
+	converter.mat4_to_dae_double(bind_mat, ob->obmat);
+
+	addBindShapeTransform(bind_mat);
+}
+
+std::string ControllerExporter::add_joints_source(Object *ob_arm, ListBase *defbase, const std::string& controller_id)
+{
+	std::string source_id = controller_id + JOINTS_SOURCE_ID_SUFFIX;
+
+	int totjoint = 0;
+	bDeformGroup *def;
+	for (def = (bDeformGroup *)defbase->first; def; def = def->next) {
+		if (is_bone_defgroup(ob_arm, def))
+			totjoint++;
+	}
+
+	COLLADASW::NameSource source(mSW);
+	source.setId(source_id);
+	source.setArrayId(source_id + ARRAY_ID_SUFFIX);
+	source.setAccessorCount(totjoint);
+	source.setAccessorStride(1);
+	
+	COLLADASW::SourceBase::ParameterNameList &param = source.getParameterNameList();
+	param.push_back("JOINT");
+
+	source.prepareToAppendValues();
+
+	for (def = (bDeformGroup *)defbase->first; def; def = def->next) {
+		Bone *bone = get_bone_from_defgroup(ob_arm, def);
+		if (bone)
+			source.appendValues(get_joint_sid(bone, ob_arm));
+	}
+
+	source.finish();
+
+	return source_id;
+}
+
+std::string ControllerExporter::add_inv_bind_mats_source(Object *ob_arm, ListBase *defbase, const std::string& controller_id)
+{
+	std::string source_id = controller_id + BIND_POSES_SOURCE_ID_SUFFIX;
+
+	int totjoint = 0;
+	for (bDeformGroup *def = (bDeformGroup *)defbase->first; def; def = def->next) {
+		if (is_bone_defgroup(ob_arm, def))
+			totjoint++;
+	}
+
+	COLLADASW::FloatSourceF source(mSW);
+	source.setId(source_id);
+	source.setArrayId(source_id + ARRAY_ID_SUFFIX);
+	source.setAccessorCount(totjoint); //BLI_countlist(defbase));
+	source.setAccessorStride(16);
+	
+	source.setParameterTypeName(&COLLADASW::CSWC::CSW_VALUE_TYPE_FLOAT4x4);
+	COLLADASW::SourceBase::ParameterNameList &param = source.getParameterNameList();
+	param.push_back("TRANSFORM");
+
+	source.prepareToAppendValues();
+
+	bPose *pose = ob_arm->pose;
+	bArmature *arm = (bArmature *)ob_arm->data;
+
+	int flag = arm->flag;
+
+	// put armature in rest position
+	if (!(arm->flag & ARM_RESTPOS)) {
+		arm->flag |= ARM_RESTPOS;
+		BKE_pose_where_is(scene, ob_arm);
+	}
+
+	for (bDeformGroup *def = (bDeformGroup *)defbase->first; def; def = def->next) {
+		if (is_bone_defgroup(ob_arm, def)) {
+			bPoseChannel *pchan = BKE_pose_channel_find_name(pose, def->name);
+
+			float mat[4][4];
+			float world[4][4];
+			float inv_bind_mat[4][4];
+
+			// SECOND_LIFE_COMPATIBILITY
+			if (export_settings->second_life) {
+				// Only translations, no rotation vs armature
+				float temp[4][4];
+				unit_m4(temp);
+				copy_v3_v3(temp[3], pchan->bone->arm_mat[3]);
+				mult_m4_m4m4(world, ob_arm->obmat, temp);
+			}
+			else {
+				// make world-space matrix, arm_mat is armature-space
+				mult_m4_m4m4(world, ob_arm->obmat, pchan->bone->arm_mat);
+			}
+
+			invert_m4_m4(mat, world);
+			converter.mat4_to_dae(inv_bind_mat, mat);
+
+			source.appendValues(inv_bind_mat);
+		}
+	}
+
+	// back from rest positon
+	if (!(flag & ARM_RESTPOS)) {
+		arm->flag = flag;
+		BKE_pose_where_is(scene, ob_arm);
+	}
+
+	source.finish();
+
+	return source_id;
+}
+
+Bone *ControllerExporter::get_bone_from_defgroup(Object *ob_arm, bDeformGroup *def)
+{
+	bPoseChannel *pchan = BKE_pose_channel_find_name(ob_arm->pose, def->name);
+	return pchan ? pchan->bone : NULL;
+}
+
+bool ControllerExporter::is_bone_defgroup(Object *ob_arm, bDeformGroup *def)
+{
+	return get_bone_from_defgroup(ob_arm, def) != NULL;
+}
+
+std::string ControllerExporter::add_weights_source(Mesh *me, const std::string& controller_id, const std::list<float>& weights)
+{
+	std::string source_id = controller_id + WEIGHTS_SOURCE_ID_SUFFIX;
+
+	COLLADASW::FloatSourceF source(mSW);
+	source.setId(source_id);
+	source.setArrayId(source_id + ARRAY_ID_SUFFIX);
+	source.setAccessorCount(weights.size());
+	source.setAccessorStride(1);
+	
+	COLLADASW::SourceBase::ParameterNameList &param = source.getParameterNameList();
+	param.push_back("WEIGHT");
+
+	source.prepareToAppendValues();
+
+	for (std::list<float>::const_iterator i = weights.begin(); i != weights.end(); ++i) {
+		source.appendValues(*i);
+	}
+
+	source.finish();
+
+	return source_id;
+}
+
+void ControllerExporter::add_vertex_weights_element(const std::string& weights_source_id, const std::string& joints_source_id,
+                                                  const std::list<int>& vcounts,
+                                                  const std::list<int>& joints)
+{
+	COLLADASW::VertexWeightsElement weightselem(mSW);
+	COLLADASW::InputList &input = weightselem.getInputList();
+
+	int offset = 0;
+	input.push_back(COLLADASW::Input(COLLADASW::InputSemantic::JOINT, // constant declared in COLLADASWInputList.h
+	                                 COLLADASW::URI(COLLADABU::Utils::EMPTY_STRING, joints_source_id), offset++));
+	input.push_back(COLLADASW::Input(COLLADASW::InputSemantic::WEIGHT,
+	                                 COLLADASW::URI(COLLADABU::Utils::EMPTY_STRING, weights_source_id), offset++));
+
+	weightselem.setCount(vcounts.size());
+
+	// write number of deformers per vertex
+	COLLADASW::PrimitivesBase::VCountList vcountlist;
+
+	vcountlist.resize(vcounts.size());
+	std::copy(vcounts.begin(), vcounts.end(), vcountlist.begin());
+
+	weightselem.prepareToAppendVCountValues();
+	weightselem.appendVertexCount(vcountlist);
+
+	weightselem.CloseVCountAndOpenVElement();
+
+	// write deformer index - weight index pairs
+	int weight_index = 0;
+	for (std::list<int>::const_iterator i = joints.begin(); i != joints.end(); ++i) {
+		weightselem.appendValues(*i, weight_index++);
+	}
+
+	weightselem.finish();
+}