/*
 * ***** 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): Blender Foundation (2008), Roland Hess, Joshua Leung
 *
 * ***** END GPL LICENSE BLOCK *****
 */

/** \file blender/makesrna/intern/rna_pose.c
 *  \ingroup RNA
 */


#include <stdlib.h>
#include <string.h>

#include "RNA_define.h"
#include "RNA_enum_types.h"

#include "rna_internal.h"

#include "DNA_action_types.h"
#include "DNA_armature_types.h"
#include "DNA_constraint_types.h"
#include "DNA_object_types.h"
#include "DNA_scene_types.h"

#include "BLI_math.h"

#include "WM_types.h"



/* XXX: this RNA enum define is currently duplicated for objects,
 * since there is some text here which is not applicable */
EnumPropertyItem posebone_rotmode_items[] = {
	{ROT_MODE_QUAT, "QUATERNION", 0, "Quaternion (WXYZ)", "No Gimbal Lock (default)"},
	{ROT_MODE_XYZ, "XYZ", 0, "XYZ Euler", "XYZ Rotation Order (prone to Gimbal Lock)"},
	{ROT_MODE_XZY, "XZY", 0, "XZY Euler", "XZY Rotation Order (prone to Gimbal Lock)"},
	{ROT_MODE_YXZ, "YXZ", 0, "YXZ Euler", "YXZ Rotation Order (prone to Gimbal Lock)"},
	{ROT_MODE_YZX, "YZX", 0, "YZX Euler", "YZX Rotation Order (prone to Gimbal Lock)"},
	{ROT_MODE_ZXY, "ZXY", 0, "ZXY Euler", "ZXY Rotation Order (prone to Gimbal Lock)"},
	{ROT_MODE_ZYX, "ZYX", 0, "ZYX Euler", "ZYX Rotation Order (prone to Gimbal Lock)"},
	{ROT_MODE_AXISANGLE, "AXIS_ANGLE", 0, "Axis Angle",
	                     "Axis Angle (W+XYZ), defines a rotation around some axis defined by 3D-Vector"},
	{0, NULL, 0, NULL, NULL}
};

/* Bone and Group Color Sets */
EnumPropertyItem color_sets_items[] = {
	{0, "DEFAULT", 0, "Default Colors", ""},
	{1, "THEME01", 0, "01 - Theme Color Set", ""},
	{2, "THEME02", 0, "02 - Theme Color Set", ""},
	{3, "THEME03", 0, "03 - Theme Color Set", ""},
	{4, "THEME04", 0, "04 - Theme Color Set", ""},
	{5, "THEME05", 0, "05 - Theme Color Set", ""},
	{6, "THEME06", 0, "06 - Theme Color Set", ""},
	{7, "THEME07", 0, "07 - Theme Color Set", ""},
	{8, "THEME08", 0, "08 - Theme Color Set", ""},
	{9, "THEME09", 0, "09 - Theme Color Set", ""},
	{10, "THEME10", 0, "10 - Theme Color Set", ""},
	{11, "THEME11", 0, "11 - Theme Color Set", ""},
	{12, "THEME12", 0, "12 - Theme Color Set", ""},
	{13, "THEME13", 0, "13 - Theme Color Set", ""},
	{14, "THEME14", 0, "14 - Theme Color Set", ""},
	{15, "THEME15", 0, "15 - Theme Color Set", ""},
	{16, "THEME16", 0, "16 - Theme Color Set", ""},
	{17, "THEME17", 0, "17 - Theme Color Set", ""},
	{18, "THEME18", 0, "18 - Theme Color Set", ""},
	{19, "THEME19", 0, "19 - Theme Color Set", ""},
	{20, "THEME20", 0, "20 - Theme Color Set", ""},
	{-1, "CUSTOM", 0, "Custom Color Set", ""},
	{0, NULL, 0, NULL, NULL}
};

#ifdef RNA_RUNTIME

#include "BIK_api.h"
#include "BKE_action.h"
#include "BKE_armature.h"

#include "DNA_userdef_types.h"

#include "MEM_guardedalloc.h"

#include "BLI_ghash.h"

#include "BKE_context.h"
#include "BKE_constraint.h"
#include "BKE_depsgraph.h"
#include "BKE_idprop.h"

#include "ED_object.h"
#include "ED_armature.h"

#include "MEM_guardedalloc.h"

#include "WM_api.h"

#include "RNA_access.h"

static void rna_Pose_update(Main *UNUSED(bmain), Scene *UNUSED(scene), PointerRNA *ptr)
{
	/* XXX when to use this? ob->pose->flag |= (POSE_LOCKED|POSE_DO_UNLOCK); */

	DAG_id_tag_update(ptr->id.data, OB_RECALC_DATA);
}

static void rna_Pose_IK_update(Main *UNUSED(bmain), Scene *UNUSED(scene), PointerRNA *ptr)
{
	/* XXX when to use this? ob->pose->flag |= (POSE_LOCKED|POSE_DO_UNLOCK); */
	Object *ob = ptr->id.data;

	DAG_id_tag_update(&ob->id, OB_RECALC_DATA);
	BIK_clear_data(ob->pose);
}

static char *rna_PoseBone_path(PointerRNA *ptr)
{
	return BLI_sprintfN("pose.bones[\"%s\"]", ((bPoseChannel *)ptr->data)->name);
}

/* shared for actions groups and bone groups */
void rna_ActionGroup_colorset_set(PointerRNA *ptr, int value)
{
	bActionGroup *grp = ptr->data;
	
	/* ensure only valid values get set */
	if ((value >= -1) && (value < 21)) {
		grp->customCol = value;
		
		/* sync colors stored with theme colors based on the index specified */
		action_group_colors_sync(grp, NULL);
	}
}

static void rna_BoneGroup_name_set(PointerRNA *ptr, const char *value)
{
	Object *ob = ptr->id.data;
	bActionGroup *agrp = ptr->data;

	/* copy the new name into the name slot */
	BLI_strncpy_utf8(agrp->name, value, sizeof(agrp->name));

	BLI_uniquename(&ob->pose->agroups, agrp, "Group", '.', offsetof(bActionGroup, name), sizeof(agrp->name));
}

static IDProperty *rna_PoseBone_idprops(PointerRNA *ptr, int create)
{
	bPoseChannel *pchan = ptr->data;

	if (create && !pchan->prop) {
		IDPropertyTemplate val = {0};
		pchan->prop = IDP_New(IDP_GROUP, &val, "RNA_PoseBone group");
	}

	return pchan->prop;
}

static void rna_Pose_ik_solver_set(struct PointerRNA *ptr, int value)
{
	bPose *pose = (bPose *)ptr->data;

	if (pose->iksolver != value) {
		/* the solver has changed, must clean any temporary structures */
		BIK_clear_data(pose);
		if (pose->ikparam) {
			MEM_freeN(pose->ikparam);
			pose->ikparam = NULL;
		}
		pose->iksolver = value;
		BKE_pose_ikparam_init(pose);
	}
}

static void rna_Pose_ik_solver_update(Main *bmain, Scene *scene, PointerRNA *ptr)
{
	Object *ob = ptr->id.data;
	bPose *pose = ptr->data;

	pose->flag |= POSE_RECALC;  /* checks & sorts pose channels */
	DAG_scene_sort(bmain, scene);
	
	BKE_pose_update_constraint_flags(pose);
	
	object_test_constraints(ob);

	DAG_id_tag_update(&ob->id, OB_RECALC_DATA | OB_RECALC_OB);
}

/* rotation - axis-angle */
static void rna_PoseChannel_rotation_axis_angle_get(PointerRNA *ptr, float *value)
{
	bPoseChannel *pchan = ptr->data;
	
	/* for now, assume that rotation mode is axis-angle */
	value[0] = pchan->rotAngle;
	copy_v3_v3(&value[1], pchan->rotAxis);
}

/* rotation - axis-angle */
static void rna_PoseChannel_rotation_axis_angle_set(PointerRNA *ptr, const float *value)
{
	bPoseChannel *pchan = ptr->data;
	
	/* for now, assume that rotation mode is axis-angle */
	pchan->rotAngle = value[0];
	copy_v3_v3(pchan->rotAxis, (float *)&value[1]);
	
	/* TODO: validate axis? */
}

static void rna_PoseChannel_rotation_mode_set(PointerRNA *ptr, int value)
{
	bPoseChannel *pchan = ptr->data;
	
	/* use API Method for conversions... */
	BKE_rotMode_change_values(pchan->quat, pchan->eul, pchan->rotAxis, &pchan->rotAngle,
	                          pchan->rotmode, (short)value);
	
	/* finally, set the new rotation type */
	pchan->rotmode = value;
}

static void rna_PoseChannel_name_set(PointerRNA *ptr, const char *value)
{
	Object *ob = (Object *)ptr->id.data;
	bPoseChannel *pchan = (bPoseChannel *)ptr->data;
	char oldname[sizeof(pchan->name)], newname[sizeof(pchan->name)];

	/* need to be on the stack */
	BLI_strncpy_utf8(newname, value, sizeof(pchan->name));
	BLI_strncpy(oldname, pchan->name, sizeof(pchan->name));

	ED_armature_bone_rename(ob->data, oldname, newname);
}

static int rna_PoseChannel_has_ik_get(PointerRNA *ptr)
{
	Object *ob = (Object *)ptr->id.data;
	bPoseChannel *pchan = (bPoseChannel *)ptr->data;

	return ED_pose_channel_in_IK_chain(ob, pchan);
}

static StructRNA *rna_IKParam_refine(PointerRNA *ptr)
{
	bIKParam *param = (bIKParam *)ptr->data;

	switch (param->iksolver) {
		case IKSOLVER_ITASC:
			return &RNA_Itasc;
		default:
			return &RNA_IKParam;
	}
}

static PointerRNA rna_Pose_ikparam_get(struct PointerRNA *ptr)
{
	bPose *pose = (bPose *)ptr->data;
	return rna_pointer_inherit_refine(ptr, &RNA_IKParam, pose->ikparam);
}

static StructRNA *rna_Pose_ikparam_typef(PointerRNA *ptr)
{
	bPose *pose = (bPose *)ptr->data;

	switch (pose->iksolver) {
		case IKSOLVER_ITASC:
			return &RNA_Itasc;
		default:
			return &RNA_IKParam;
	}
}

static void rna_Itasc_update(Main *UNUSED(bmain), Scene *UNUSED(scene), PointerRNA *ptr)
{
	Object *ob = ptr->id.data;
	bItasc *itasc = ptr->data;

	/* verify values */
	if (itasc->precision < 0.0001f)
		itasc->precision = 0.0001f;
	if (itasc->minstep < 0.001f)
		itasc->minstep = 0.001f;
	if (itasc->maxstep < itasc->minstep)
		itasc->maxstep = itasc->minstep;
	if (itasc->feedback < 0.01f)
		itasc->feedback = 0.01f;
	if (itasc->feedback > 100.f)
		itasc->feedback = 100.f;
	if (itasc->maxvel < 0.01f)
		itasc->maxvel = 0.01f;
	if (itasc->maxvel > 100.f)
		itasc->maxvel = 100.f;
	BIK_update_param(ob->pose);

	DAG_id_tag_update(&ob->id, OB_RECALC_DATA);
}

static void rna_Itasc_update_rebuild(Main *bmain, Scene *scene, PointerRNA *ptr)
{
	Object *ob = ptr->id.data;
	bPose *pose = ob->pose;

	pose->flag |= POSE_RECALC;  /* checks & sorts pose channels */
	rna_Itasc_update(bmain, scene, ptr);
}

static void rna_PoseChannel_bone_custom_set(PointerRNA *ptr, PointerRNA value)
{
	bPoseChannel *pchan = (bPoseChannel *)ptr->data;


	if (pchan->custom) {
		id_us_min(&pchan->custom->id);
		pchan->custom = NULL;
	}

	pchan->custom = value.data;

	id_us_plus(&pchan->custom->id);
}

static PointerRNA rna_PoseChannel_bone_group_get(PointerRNA *ptr)
{
	Object *ob = (Object *)ptr->id.data;
	bPose *pose = (ob) ? ob->pose : NULL;
	bPoseChannel *pchan = (bPoseChannel *)ptr->data;
	bActionGroup *grp;
	
	if (pose)
		grp = BLI_findlink(&pose->agroups, pchan->agrp_index - 1);
	else
		grp = NULL;
	
	return rna_pointer_inherit_refine(ptr, &RNA_BoneGroup, grp);
}

static void rna_PoseChannel_bone_group_set(PointerRNA *ptr, PointerRNA value)
{
	Object *ob = (Object *)ptr->id.data;
	bPose *pose = (ob) ? ob->pose : NULL;
	bPoseChannel *pchan = (bPoseChannel *)ptr->data;
	
	if (pose)
		pchan->agrp_index = BLI_findindex(&pose->agroups, value.data) + 1;
	else
		pchan->agrp_index = 0;
}

static int rna_PoseChannel_bone_group_index_get(PointerRNA *ptr)
{
	bPoseChannel *pchan = (bPoseChannel *)ptr->data;
	return MAX2(pchan->agrp_index - 1, 0);
}

static void rna_PoseChannel_bone_group_index_set(PointerRNA *ptr, int value)
{
	bPoseChannel *pchan = (bPoseChannel *)ptr->data;
	pchan->agrp_index = value + 1;
}

static void rna_PoseChannel_bone_group_index_range(PointerRNA *ptr, int *min, int *max, int *softmin, int *softmax)
{
	Object *ob = (Object *)ptr->id.data;
	bPose *pose = (ob) ? ob->pose : NULL;
	
	*min = 0;
	*max = pose ? max_ii(0, BLI_countlist(&pose->agroups) - 1) : 0;
}

static PointerRNA rna_Pose_active_bone_group_get(PointerRNA *ptr)
{
	bPose *pose = (bPose *)ptr->data;
	return rna_pointer_inherit_refine(ptr, &RNA_BoneGroup, BLI_findlink(&pose->agroups, pose->active_group - 1));
}

static void rna_Pose_active_bone_group_set(PointerRNA *ptr, PointerRNA value)
{
	bPose *pose = (bPose *)ptr->data;
	pose->active_group = BLI_findindex(&pose->agroups, value.data) + 1;
}

static int rna_Pose_active_bone_group_index_get(PointerRNA *ptr)
{
	bPose *pose = (bPose *)ptr->data;
	return MAX2(pose->active_group - 1, 0);
}

static void rna_Pose_active_bone_group_index_set(PointerRNA *ptr, int value)
{
	bPose *pose = (bPose *)ptr->data;
	pose->active_group = value + 1;
}

static void rna_Pose_active_bone_group_index_range(PointerRNA *ptr, int *min, int *max, int *softmin, int *softmax)
{
	bPose *pose = (bPose *)ptr->data;

	*min = 0;
	*max = max_ii(0, BLI_countlist(&pose->agroups) - 1);
}

#if 0
static void rna_pose_bgroup_name_index_get(PointerRNA *ptr, char *value, int index)
{
	bPose *pose = (bPose *)ptr->data;
	bActionGroup *grp;

	grp = BLI_findlink(&pose->agroups, index - 1);

	if (grp) BLI_strncpy(value, grp->name, sizeof(grp->name));
	else value[0] = '\0';
}

static int rna_pose_bgroup_name_index_length(PointerRNA *ptr, int index)
{
	bPose *pose = (bPose *)ptr->data;
	bActionGroup *grp;

	grp = BLI_findlink(&pose->agroups, index - 1);
	return (grp) ? strlen(grp->name) : 0;
}

static void rna_pose_bgroup_name_index_set(PointerRNA *ptr, const char *value, short *index)
{
	bPose *pose = (bPose *)ptr->data;
	bActionGroup *grp;
	int a;
	
	for (a = 1, grp = pose->agroups.first; grp; grp = grp->next, a++) {
		if (strcmp(grp->name, value) == 0) {
			*index = a;
			return;
		}
	}
	
	*index = 0;
}

static void rna_pose_pgroup_name_set(PointerRNA *ptr, const char *value, char *result, int maxlen)
{
	bPose *pose = (bPose *)ptr->data;
	bActionGroup *grp;
	
	for (grp = pose->agroups.first; grp; grp = grp->next) {
		if (strcmp(grp->name, value) == 0) {
			BLI_strncpy(result, value, maxlen);
			return;
		}
	}
	
	result[0] = '\0';
}
#endif

static PointerRNA rna_PoseChannel_active_constraint_get(PointerRNA *ptr)
{
	bPoseChannel *pchan = (bPoseChannel *)ptr->data;
	bConstraint *con = BKE_constraints_get_active(&pchan->constraints);
	return rna_pointer_inherit_refine(ptr, &RNA_Constraint, con);
}

static void rna_PoseChannel_active_constraint_set(PointerRNA *ptr, PointerRNA value)
{
	bPoseChannel *pchan = (bPoseChannel *)ptr->data;
	BKE_constraints_set_active(&pchan->constraints, (bConstraint *)value.data);
}

static bConstraint *rna_PoseChannel_constraints_new(bPoseChannel *pchan, int type)
{
	/*WM_main_add_notifier(NC_OBJECT|ND_CONSTRAINT|NA_ADDED, object); */
	/* TODO, pass object also */
	/* TODO, new pose bones don't have updated draw flags */
	return BKE_add_pose_constraint(NULL, pchan, NULL, type);
}

static void rna_PoseChannel_constraints_remove(ID *id, bPoseChannel *pchan, ReportList *reports, PointerRNA *con_ptr)
{
	bConstraint *con = con_ptr->data;
	const short is_ik = ELEM(con->type, CONSTRAINT_TYPE_KINEMATIC, CONSTRAINT_TYPE_SPLINEIK);
	Object *ob = (Object *)id;

	if (BLI_findindex(&pchan->constraints, con) == -1) {
		BKE_reportf(reports, RPT_ERROR, "Constraint '%s' not found in pose bone '%s'", con->name, pchan->name);
		return;
	}

	BKE_remove_constraint(&pchan->constraints, con);
	RNA_POINTER_INVALIDATE(con_ptr);

	ED_object_constraint_update(ob);

	BKE_constraints_set_active(&pchan->constraints, NULL);  /* XXX, is this really needed? - Campbell */

	WM_main_add_notifier(NC_OBJECT | ND_CONSTRAINT | NA_REMOVED, id);

	if (is_ik) {
		BIK_clear_data(ob->pose);
	}
}

static int rna_PoseChannel_proxy_editable(PointerRNA *ptr)
{
	Object *ob = (Object *)ptr->id.data;
	bArmature *arm = ob->data;
	bPoseChannel *pchan = (bPoseChannel *)ptr->data;
	
	return (ob->proxy && pchan->bone && (pchan->bone->layer & arm->layer_protected)) ? 0 : PROP_EDITABLE;
}

static int rna_PoseChannel_location_editable(PointerRNA *ptr, int index)
{
	bPoseChannel *pchan = (bPoseChannel *)ptr->data;

	/* only if the axis in question is locked, not editable... */
	if ((index == 0) && (pchan->protectflag & OB_LOCK_LOCX))
		return 0;
	else if ((index == 1) && (pchan->protectflag & OB_LOCK_LOCY))
		return 0;
	else if ((index == 2) && (pchan->protectflag & OB_LOCK_LOCZ))
		return 0;
	else
		return PROP_EDITABLE;
}

static int rna_PoseChannel_scale_editable(PointerRNA *ptr, int index)
{
	bPoseChannel *pchan = (bPoseChannel *)ptr->data;
	
	/* only if the axis in question is locked, not editable... */
	if ((index == 0) && (pchan->protectflag & OB_LOCK_SCALEX))
		return 0;
	else if ((index == 1) && (pchan->protectflag & OB_LOCK_SCALEY))
		return 0;
	else if ((index == 2) && (pchan->protectflag & OB_LOCK_SCALEZ))
		return 0;
	else
		return PROP_EDITABLE;
}

static int rna_PoseChannel_rotation_euler_editable(PointerRNA *ptr, int index)
{
	bPoseChannel *pchan = (bPoseChannel *)ptr->data;
	
	/* only if the axis in question is locked, not editable... */
	if ((index == 0) && (pchan->protectflag & OB_LOCK_ROTX))
		return 0;
	else if ((index == 1) && (pchan->protectflag & OB_LOCK_ROTY))
		return 0;
	else if ((index == 2) && (pchan->protectflag & OB_LOCK_ROTZ))
		return 0;
	else
		return PROP_EDITABLE;
}

static int rna_PoseChannel_rotation_4d_editable(PointerRNA *ptr, int index)
{
	bPoseChannel *pchan = (bPoseChannel *)ptr->data;
	
	/* only consider locks if locking components individually... */
	if (pchan->protectflag & OB_LOCK_ROT4D) {
		/* only if the axis in question is locked, not editable... */
		if ((index == 0) && (pchan->protectflag & OB_LOCK_ROTW))
			return 0;
		else if ((index == 1) && (pchan->protectflag & OB_LOCK_ROTX))
			return 0;
		else if ((index == 2) && (pchan->protectflag & OB_LOCK_ROTY))
			return 0;
		else if ((index == 3) && (pchan->protectflag & OB_LOCK_ROTZ))
			return 0;
	}
		
	return PROP_EDITABLE;
}

/* not essential, but much faster then the default lookup function */
static int rna_PoseBones_lookup_string(PointerRNA *ptr, const char *key, PointerRNA *r_ptr)
{
	bPose *pose = (bPose *)ptr->data;
	bPoseChannel *pchan = BKE_pose_channel_find_name(pose, key);
	if (pchan) {
		RNA_pointer_create(ptr->id.data, &RNA_PoseBone, pchan, r_ptr);
		return TRUE;
	}
	else {
		return FALSE;
	}
}

static void rna_PoseChannel_matrix_basis_get(PointerRNA *ptr, float *values)
{
	bPoseChannel *pchan = (bPoseChannel *)ptr->data;
	BKE_pchan_to_mat4(pchan, (float (*)[4])values);
}

static void rna_PoseChannel_matrix_basis_set(PointerRNA *ptr, const float *values)
{
	bPoseChannel *pchan = (bPoseChannel *)ptr->data;
	BKE_pchan_apply_mat4(pchan, (float (*)[4])values, FALSE); /* no compat for predictable result */
}

static void rna_PoseChannel_matrix_set(PointerRNA *ptr, const float *values)
{
	bPoseChannel *pchan = (bPoseChannel *)ptr->data;
	Object *ob = (Object *)ptr->id.data;
	float tmat[4][4];

	BKE_armature_mat_pose_to_bone_ex(ob, pchan, (float (*)[4])values, tmat);

	BKE_pchan_apply_mat4(pchan, tmat, FALSE); /* no compat for predictable result */
}

#else

/* common properties for Action/Bone Groups - related to color */
void rna_def_actionbone_group_common(StructRNA *srna, int update_flag, const char *update_cb)
{
	PropertyRNA *prop;
	
	/* color set + colors */
	prop = RNA_def_property(srna, "color_set", PROP_ENUM, PROP_NONE);
	RNA_def_property_enum_sdna(prop, NULL, "customCol");
	RNA_def_property_enum_items(prop, color_sets_items);
	RNA_def_property_enum_funcs(prop, NULL, "rna_ActionGroup_colorset_set", NULL);
	RNA_def_property_ui_text(prop, "Color Set", "Custom color set to use");
	RNA_def_property_update(prop, update_flag, update_cb);
	
	/* TODO: editing the colors for this should result in changes to the color type... */
	prop = RNA_def_property(srna, "colors", PROP_POINTER, PROP_NONE);
	RNA_def_property_flag(prop, PROP_NEVER_NULL);
	RNA_def_property_struct_type(prop, "ThemeBoneColorSet");
	/* NOTE: the DNA data is not really a pointer, but this code works :) */
	RNA_def_property_pointer_sdna(prop, NULL, "cs");
	RNA_def_property_ui_text(prop, "Colors", "Copy of the colors associated with the group's color set");
	RNA_def_property_update(prop, update_flag, update_cb);
}

static void rna_def_bone_group(BlenderRNA *brna)
{
	StructRNA *srna;
	PropertyRNA *prop;
	
	/* struct */
	srna = RNA_def_struct(brna, "BoneGroup", NULL);
	RNA_def_struct_sdna(srna, "bActionGroup");
	RNA_def_struct_ui_text(srna, "Bone Group", "Groups of Pose Channels (Bones)");
	RNA_def_struct_ui_icon(srna, ICON_GROUP_BONE);
	
	/* name */
	prop = RNA_def_property(srna, "name", PROP_STRING, PROP_NONE);
	RNA_def_property_ui_text(prop, "Name", "");
	RNA_def_property_string_funcs(prop, NULL, NULL, "rna_BoneGroup_name_set");
	RNA_def_struct_name_property(srna, prop);
	
	/* TODO: add some runtime-collections stuff to access grouped bones  */
	
	/* color set */
	rna_def_actionbone_group_common(srna, NC_OBJECT | ND_POSE, "rna_Pose_update");
}

static EnumPropertyItem prop_iksolver_items[] = {
	{IKSOLVER_STANDARD, "LEGACY", 0, "Standard", "Original IK solver"},
	{IKSOLVER_ITASC, "ITASC", 0, "iTaSC", "Multi constraint, stateful IK solver"},
	{0, NULL, 0, NULL, NULL}
};

static EnumPropertyItem prop_solver_items[] = {
	{ITASC_SOLVER_SDLS, "SDLS", 0, "SDLS", "Selective Damped Least Square"},
	{ITASC_SOLVER_DLS, "DLS", 0, "DLS", "Damped Least Square with Numerical Filtering"},
	{0, NULL, 0, NULL, NULL}
};


static void rna_def_pose_channel_constraints(BlenderRNA *brna, PropertyRNA *cprop)
{
	StructRNA *srna;
	PropertyRNA *prop;

	FunctionRNA *func;
	PropertyRNA *parm;

	RNA_def_property_srna(cprop, "PoseBoneConstraints");
	srna = RNA_def_struct(brna, "PoseBoneConstraints", NULL);
	RNA_def_struct_sdna(srna, "bPoseChannel");
	RNA_def_struct_ui_text(srna, "PoseBone Constraints", "Collection of pose bone constraints");

	/* Collection active property */
	prop = RNA_def_property(srna, "active", PROP_POINTER, PROP_NONE);
	RNA_def_property_struct_type(prop, "Constraint");
	RNA_def_property_pointer_funcs(prop, "rna_PoseChannel_active_constraint_get",
	                               "rna_PoseChannel_active_constraint_set", NULL, NULL);
	RNA_def_property_flag(prop, PROP_EDITABLE);
	RNA_def_property_ui_text(prop, "Active Constraint", "Active PoseChannel constraint");


	/* Constraint collection */
	func = RNA_def_function(srna, "new", "rna_PoseChannel_constraints_new");
	RNA_def_function_ui_description(func, "Add a constraint to this object");
	/* return type */
	parm = RNA_def_pointer(func, "constraint", "Constraint", "", "New constraint");
	RNA_def_function_return(func, parm);
	/* constraint to add */
	parm = RNA_def_enum(func, "type", constraint_type_items, 1, "", "Constraint type to add");
	RNA_def_property_flag(parm, PROP_REQUIRED);

	func = RNA_def_function(srna, "remove", "rna_PoseChannel_constraints_remove");
	RNA_def_function_ui_description(func, "Remove a constraint from this object");
	RNA_def_function_flag(func, FUNC_USE_REPORTS | FUNC_USE_SELF_ID); /* ID needed for refresh */
	/* constraint to remove */
	parm = RNA_def_pointer(func, "constraint", "Constraint", "", "Removed constraint");
	RNA_def_property_flag(parm, PROP_REQUIRED | PROP_NEVER_NULL | PROP_RNAPTR);
	RNA_def_property_clear_flag(parm, PROP_THICK_WRAP);
}

static void rna_def_pose_channel(BlenderRNA *brna)
{
	static float default_quat[4] = {1, 0, 0, 0};    /* default quaternion values */
	static float default_axisAngle[4] = {0, 0, 1, 0};   /* default axis-angle rotation values */
	static float default_scale[3] = {1, 1, 1}; /* default scale values */
	
	const int matrix_dimsize[] = {4, 4};
	
	StructRNA *srna;
	PropertyRNA *prop;

	srna = RNA_def_struct(brna, "PoseBone", NULL);
	RNA_def_struct_sdna(srna, "bPoseChannel");
	RNA_def_struct_ui_text(srna, "Pose Bone", "Channel defining pose data for a bone in a Pose");
	RNA_def_struct_path_func(srna, "rna_PoseBone_path");
	RNA_def_struct_idprops_func(srna, "rna_PoseBone_idprops");
	RNA_def_struct_ui_icon(srna, ICON_BONE_DATA);
	
	/* Bone Constraints */
	prop = RNA_def_property(srna, "constraints", PROP_COLLECTION, PROP_NONE);
	RNA_def_property_struct_type(prop, "Constraint");
	RNA_def_property_ui_text(prop, "Constraints", "Constraints that act on this PoseChannel");

	rna_def_pose_channel_constraints(brna, prop);

	/* Name + Selection Status */
	prop = RNA_def_property(srna, "name", PROP_STRING, PROP_NONE);
	RNA_def_property_string_funcs(prop, NULL, NULL, "rna_PoseChannel_name_set");
	RNA_def_property_ui_text(prop, "Name", "");
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_struct_name_property(srna, prop);

	/* Baked Bone Path cache data */
	rna_def_motionpath_common(srna);
	
	/* Relationships to other bones */
	prop = RNA_def_property(srna, "bone", PROP_POINTER, PROP_NONE);
	RNA_def_property_flag(prop, PROP_NEVER_NULL);
	RNA_def_property_struct_type(prop, "Bone");
	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
	RNA_def_property_ui_text(prop, "Bone", "Bone associated with this PoseBone");

	prop = RNA_def_property(srna, "parent", PROP_POINTER, PROP_NONE);
	RNA_def_property_struct_type(prop, "PoseBone");
	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
	RNA_def_property_ui_text(prop, "Parent", "Parent of this pose bone");

	prop = RNA_def_property(srna, "child", PROP_POINTER, PROP_NONE);
	RNA_def_property_struct_type(prop, "PoseBone");
	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
	RNA_def_property_ui_text(prop, "Child", "Child of this pose bone");
	
	/* Transformation settings */
	prop = RNA_def_property(srna, "location", PROP_FLOAT, PROP_TRANSLATION);
	RNA_def_property_float_sdna(prop, NULL, "loc");
	RNA_def_property_editable_array_func(prop, "rna_PoseChannel_location_editable");
	RNA_def_property_ui_text(prop, "Location", "");
	RNA_def_property_ui_range(prop, -FLT_MAX, FLT_MAX, 1, RNA_TRANSLATION_PREC_DEFAULT);
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_IK_update");

	prop = RNA_def_property(srna, "scale", PROP_FLOAT, PROP_XYZ);
	RNA_def_property_float_sdna(prop, NULL, "size");
	RNA_def_property_editable_array_func(prop, "rna_PoseChannel_scale_editable");
	RNA_def_property_float_array_default(prop, default_scale);
	RNA_def_property_ui_text(prop, "Scale", "");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_IK_update");

	prop = RNA_def_property(srna, "rotation_quaternion", PROP_FLOAT, PROP_QUATERNION);
	RNA_def_property_float_sdna(prop, NULL, "quat");
	RNA_def_property_editable_array_func(prop, "rna_PoseChannel_rotation_4d_editable");
	RNA_def_property_float_array_default(prop, default_quat);
	RNA_def_property_ui_text(prop, "Quaternion Rotation", "Rotation in Quaternions");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_update");
	
	/* XXX: for axis-angle, it would have been nice to have 2 separate fields for UI purposes, but
	 * having a single one is better for Keyframing and other property-management situations...
	 */
	prop = RNA_def_property(srna, "rotation_axis_angle", PROP_FLOAT, PROP_AXISANGLE);
	RNA_def_property_array(prop, 4);
	RNA_def_property_float_funcs(prop, "rna_PoseChannel_rotation_axis_angle_get",
	                             "rna_PoseChannel_rotation_axis_angle_set", NULL);
	RNA_def_property_editable_array_func(prop, "rna_PoseChannel_rotation_4d_editable");
	RNA_def_property_float_array_default(prop, default_axisAngle);
	RNA_def_property_ui_text(prop, "Axis-Angle Rotation", "Angle of Rotation for Axis-Angle rotation representation");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_update");
	
	prop = RNA_def_property(srna, "rotation_euler", PROP_FLOAT, PROP_EULER);
	RNA_def_property_float_sdna(prop, NULL, "eul");
	RNA_def_property_editable_array_func(prop, "rna_PoseChannel_rotation_euler_editable");
	RNA_def_property_ui_text(prop, "Euler Rotation", "Rotation in Eulers");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_update");
	
	prop = RNA_def_property(srna, "rotation_mode", PROP_ENUM, PROP_NONE);
	RNA_def_property_enum_sdna(prop, NULL, "rotmode");
	RNA_def_property_enum_items(prop, posebone_rotmode_items); /* XXX move to using a single define of this someday */
	RNA_def_property_enum_funcs(prop, NULL, "rna_PoseChannel_rotation_mode_set", NULL);
	/* XXX... disabled, since proxy-locked layers are currently used for ensuring proxy-syncing too */
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_ui_text(prop, "Rotation Mode", "");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_update");
	
	/* transform matrices - should be read-only since these are set directly by AnimSys evaluation */
	prop = RNA_def_property(srna, "matrix_channel", PROP_FLOAT, PROP_MATRIX);
	RNA_def_property_float_sdna(prop, NULL, "chan_mat");
	RNA_def_property_multi_array(prop, 2, matrix_dimsize);
	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
	RNA_def_property_ui_text(prop, "Channel Matrix", "4x4 matrix, before constraints");

	/* writable because it touches loc/scale/rot directly */
	prop = RNA_def_property(srna, "matrix_basis", PROP_FLOAT, PROP_MATRIX);
	RNA_def_property_multi_array(prop, 2, matrix_dimsize);
	RNA_def_property_ui_text(prop, "Basis Matrix",
	                         "Alternative access to location/scale/rotation relative to the parent and own rest bone");
	RNA_def_property_float_funcs(prop, "rna_PoseChannel_matrix_basis_get", "rna_PoseChannel_matrix_basis_set", NULL);
	RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_update");

	/* final matrix */
	prop = RNA_def_property(srna, "matrix", PROP_FLOAT, PROP_MATRIX);
	RNA_def_property_float_sdna(prop, NULL, "pose_mat");
	RNA_def_property_multi_array(prop, 2, matrix_dimsize);
	RNA_def_property_float_funcs(prop, NULL, "rna_PoseChannel_matrix_set", NULL);
	RNA_def_property_ui_text(prop, "Pose Matrix",
	                         "Final 4x4 matrix after constraints and drivers are applied (object space)");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_update");

	/* Head/Tail Coordinates (in Pose Space) - Automatically calculated... */
	prop = RNA_def_property(srna, "head", PROP_FLOAT, PROP_TRANSLATION);
	RNA_def_property_float_sdna(prop, NULL, "pose_head");
	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
	RNA_def_property_ui_text(prop, "Pose Head Position", "Location of head of the channel's bone");
	RNA_def_property_ui_range(prop, -FLT_MAX, FLT_MAX, 1, RNA_TRANSLATION_PREC_DEFAULT);

	prop = RNA_def_property(srna, "tail", PROP_FLOAT, PROP_TRANSLATION);
	RNA_def_property_float_sdna(prop, NULL, "pose_tail");
	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
	RNA_def_property_ui_text(prop, "Pose Tail Position", "Location of tail of the channel's bone");
	RNA_def_property_ui_range(prop, -FLT_MAX, FLT_MAX, 1, RNA_TRANSLATION_PREC_DEFAULT);
	
	/* IK Settings */
	prop = RNA_def_property(srna, "is_in_ik_chain", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_funcs(prop,  "rna_PoseChannel_has_ik_get", NULL);
	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
	RNA_def_property_ui_text(prop, "Has IK", "Is part of an IK chain");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_IK_update");

	prop = RNA_def_property(srna, "lock_ik_x", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "ikflag", BONE_IK_NO_XDOF);
	RNA_def_property_ui_text(prop, "IK X Lock", "Disallow movement around the X axis");
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_IK_update");

	prop = RNA_def_property(srna, "lock_ik_y", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "ikflag", BONE_IK_NO_YDOF);
	RNA_def_property_ui_text(prop, "IK Y Lock", "Disallow movement around the Y axis");
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_IK_update");

	prop = RNA_def_property(srna, "lock_ik_z", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "ikflag", BONE_IK_NO_ZDOF);
	RNA_def_property_ui_text(prop, "IK Z Lock", "Disallow movement around the Z axis");
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_IK_update");

	prop = RNA_def_property(srna, "use_ik_limit_x", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "ikflag", BONE_IK_XLIMIT);
	RNA_def_property_ui_text(prop, "IK X Limit", "Limit movement around the X axis");
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_IK_update");

	prop = RNA_def_property(srna, "use_ik_limit_y", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "ikflag", BONE_IK_YLIMIT);
	RNA_def_property_ui_text(prop, "IK Y Limit", "Limit movement around the Y axis");
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_IK_update");

	prop = RNA_def_property(srna, "use_ik_limit_z", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "ikflag", BONE_IK_ZLIMIT);
	RNA_def_property_ui_text(prop, "IK Z Limit", "Limit movement around the Z axis");
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_IK_update");
	
	prop = RNA_def_property(srna, "use_ik_rotation_control", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "ikflag", BONE_IK_ROTCTL);
	RNA_def_property_ui_text(prop, "IK rot control", "Apply channel rotation as IK constraint");
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_IK_update");
	
	prop = RNA_def_property(srna, "use_ik_linear_control", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "ikflag", BONE_IK_LINCTL);
	RNA_def_property_ui_text(prop, "IK rot control", "Apply channel size as IK constraint if stretching is enabled");
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_IK_update");
	
	prop = RNA_def_property(srna, "ik_min_x", PROP_FLOAT, PROP_ANGLE);
	RNA_def_property_float_sdna(prop, NULL, "limitmin[0]");
	RNA_def_property_range(prop, -M_PI, 0.0f);
	RNA_def_property_ui_text(prop, "IK X Minimum", "Minimum angles for IK Limit");
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_IK_update");

	prop = RNA_def_property(srna, "ik_max_x", PROP_FLOAT, PROP_ANGLE);
	RNA_def_property_float_sdna(prop, NULL, "limitmax[0]");
	RNA_def_property_range(prop, 0.0f, M_PI);
	RNA_def_property_ui_text(prop, "IK X Maximum", "Maximum angles for IK Limit");
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_IK_update");

	prop = RNA_def_property(srna, "ik_min_y", PROP_FLOAT, PROP_ANGLE);
	RNA_def_property_float_sdna(prop, NULL, "limitmin[1]");
	RNA_def_property_range(prop, -M_PI, 0.0f);
	RNA_def_property_ui_text(prop, "IK Y Minimum", "Minimum angles for IK Limit");
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_IK_update");

	prop = RNA_def_property(srna, "ik_max_y", PROP_FLOAT, PROP_ANGLE);
	RNA_def_property_float_sdna(prop, NULL, "limitmax[1]");
	RNA_def_property_range(prop, 0.0f, M_PI);
	RNA_def_property_ui_text(prop, "IK Y Maximum", "Maximum angles for IK Limit");
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_IK_update");

	prop = RNA_def_property(srna, "ik_min_z", PROP_FLOAT, PROP_ANGLE);
	RNA_def_property_float_sdna(prop, NULL, "limitmin[2]");
	RNA_def_property_range(prop, -M_PI, 0.0f);
	RNA_def_property_ui_text(prop, "IK Z Minimum", "Minimum angles for IK Limit");
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_IK_update");

	prop = RNA_def_property(srna, "ik_max_z", PROP_FLOAT, PROP_ANGLE);
	RNA_def_property_float_sdna(prop, NULL, "limitmax[2]");
	RNA_def_property_range(prop, 0.0f, M_PI);
	RNA_def_property_ui_text(prop, "IK Z Maximum", "Maximum angles for IK Limit");
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_IK_update");

	prop = RNA_def_property(srna, "ik_stiffness_x", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "stiffness[0]");
	RNA_def_property_range(prop, 0.0f, 0.99f);
	RNA_def_property_ui_text(prop, "IK X Stiffness", "IK stiffness around the X axis");
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_IK_update");

	prop = RNA_def_property(srna, "ik_stiffness_y", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "stiffness[1]");
	RNA_def_property_range(prop, 0.0f, 0.99f);
	RNA_def_property_ui_text(prop, "IK Y Stiffness", "IK stiffness around the Y axis");
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_IK_update");

	prop = RNA_def_property(srna, "ik_stiffness_z", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "stiffness[2]");
	RNA_def_property_range(prop, 0.0f, 0.99f);
	RNA_def_property_ui_text(prop, "IK Z Stiffness", "IK stiffness around the Z axis");
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_IK_update");

	prop = RNA_def_property(srna, "ik_stretch", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "ikstretch");
	RNA_def_property_range(prop, 0.0f, 1.0f);
	RNA_def_property_ui_text(prop, "IK Stretch", "Allow scaling of the bone for IK");
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_IK_update");
	
	prop = RNA_def_property(srna, "ik_rotation_weight", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "ikrotweight");
	RNA_def_property_range(prop, 0.0f, 1.0f);
	RNA_def_property_ui_text(prop, "IK Rot Weight", "Weight of rotation constraint for IK");
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_update");
	
	prop = RNA_def_property(srna, "ik_linear_weight", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "iklinweight");
	RNA_def_property_range(prop, 0.0f, 1.0f);
	RNA_def_property_ui_text(prop, "IK Lin Weight", "Weight of scale constraint for IK");
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_update");
	
	/* custom bone shapes */
	prop = RNA_def_property(srna, "custom_shape", PROP_POINTER, PROP_NONE);
	RNA_def_property_pointer_sdna(prop, NULL, "custom");
	RNA_def_property_struct_type(prop, "Object");
	RNA_def_property_flag(prop, PROP_EDITABLE);
	RNA_def_property_pointer_funcs(prop, NULL, "rna_PoseChannel_bone_custom_set", NULL, NULL);
	RNA_def_property_ui_text(prop, "Custom Object", "Object that defines custom draw type for this bone");
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_update");
	
	prop = RNA_def_property(srna, "custom_shape_transform", PROP_POINTER, PROP_NONE);
	RNA_def_property_pointer_sdna(prop, NULL, "custom_tx");
	RNA_def_property_struct_type(prop, "PoseBone");
	RNA_def_property_flag(prop, PROP_EDITABLE);
	RNA_def_property_ui_text(prop, "Custom Shape Transform",
	                         "Bone that defines the display transform of this custom shape");
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_update");
	
	/* bone groups */
	prop = RNA_def_property(srna, "bone_group_index", PROP_INT, PROP_NONE);
	RNA_def_property_int_sdna(prop, NULL, "agrp_index");
	RNA_def_property_flag(prop, PROP_EDITABLE);
	RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
	RNA_def_property_int_funcs(prop, "rna_PoseChannel_bone_group_index_get", "rna_PoseChannel_bone_group_index_set",
	                           "rna_PoseChannel_bone_group_index_range");
	RNA_def_property_ui_text(prop, "Bone Group Index", "Bone Group this pose channel belongs to (0=no group)");
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_update");
	
	prop = RNA_def_property(srna, "bone_group", PROP_POINTER, PROP_NONE);
	RNA_def_property_struct_type(prop, "BoneGroup");
	RNA_def_property_flag(prop, PROP_EDITABLE);
	RNA_def_property_pointer_funcs(prop, "rna_PoseChannel_bone_group_get",
	                               "rna_PoseChannel_bone_group_set", NULL, NULL);
	RNA_def_property_ui_text(prop, "Bone Group", "Bone Group this pose channel belongs to");
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_update");
	
	/* transform locks */
	prop = RNA_def_property(srna, "lock_location", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "protectflag", OB_LOCK_LOCX);
	RNA_def_property_array(prop, 3);
	RNA_def_property_ui_text(prop, "Lock Location", "Lock editing of location in the interface");
	RNA_def_property_ui_icon(prop, ICON_UNLOCKED, 1);
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_update");

	prop = RNA_def_property(srna, "lock_rotation", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "protectflag", OB_LOCK_ROTX);
	RNA_def_property_array(prop, 3);
	RNA_def_property_ui_text(prop, "Lock Rotation", "Lock editing of rotation in the interface");
	RNA_def_property_ui_icon(prop, ICON_UNLOCKED, 1);
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_update");
	
	/* XXX this is sub-optimal - it really should be included above, but due to technical reasons
	 *     we can't do this! */
	prop = RNA_def_property(srna, "lock_rotation_w", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "protectflag", OB_LOCK_ROTW);
	RNA_def_property_ui_text(prop, "Lock Rotation (4D Angle)",
	                         "Lock editing of 'angle' component of four-component rotations in the interface");
	RNA_def_property_ui_icon(prop, ICON_UNLOCKED, 1);
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_update");

	/* XXX this needs a better name */
	prop = RNA_def_property(srna, "lock_rotations_4d", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "protectflag", OB_LOCK_ROT4D);
	RNA_def_property_ui_text(prop, "Lock Rotations (4D)",
	                         "Lock editing of four component rotations by components (instead of as Eulers)");
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_update");

	prop = RNA_def_property(srna, "lock_scale", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "protectflag", OB_LOCK_SCALEX);
	RNA_def_property_array(prop, 3);
	RNA_def_property_ui_text(prop, "Lock Scale", "Lock editing of scale in the interface");
	RNA_def_property_ui_icon(prop, ICON_UNLOCKED, 1);
	RNA_def_property_editable_func(prop, "rna_PoseChannel_proxy_editable");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_update");

	RNA_api_pose_channel(srna);
}

static void rna_def_pose_itasc(BlenderRNA *brna)
{
	static const EnumPropertyItem prop_itasc_mode_items[] = {
		{0, "ANIMATION", 0, "Animation",
		    "Stateless solver computing pose starting from current action and non-IK constraints"},
		{ITASC_SIMULATION, "SIMULATION", 0, "Simulation",
		                   "State-full solver running in real-time context and ignoring actions "
		                   "and non-IK constraints"},
		{0, NULL, 0, NULL, NULL}
	};
	static const EnumPropertyItem prop_itasc_reiteration_items[] = {
		{0, "NEVER", 0, "Never", "The solver does not reiterate, not even on first frame (starts from rest pose)"},
		{ITASC_INITIAL_REITERATION, "INITIAL", 0, "Initial",
		                            "The solver reiterates (converges) on the first frame but not on "
		                            "subsequent frame"},
		{ITASC_INITIAL_REITERATION | ITASC_REITERATION, "ALWAYS", 0, "Always",
		                                                "The solver reiterates (converges) on all frames"},
		{0, NULL, 0, NULL, NULL}
	};

	StructRNA *srna;
	PropertyRNA *prop;

	srna = RNA_def_struct(brna, "Itasc", "IKParam");
	RNA_def_struct_sdna(srna, "bItasc");
	RNA_def_struct_ui_text(srna, "bItasc", "Parameters for the iTaSC IK solver");

	prop = RNA_def_property(srna, "precision", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "precision");
	RNA_def_property_range(prop, 0.0f, 0.1f);
	RNA_def_property_ui_text(prop, "Precision", "Precision of convergence in case of reiteration");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Itasc_update");

	prop = RNA_def_property(srna, "iterations", PROP_INT, PROP_NONE);
	RNA_def_property_int_sdna(prop, NULL, "numiter");
	RNA_def_property_range(prop, 0, 1000);
	RNA_def_property_ui_text(prop, "Iterations",
	                         "Maximum number of iterations for convergence in case of reiteration");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Itasc_update");

	prop = RNA_def_property(srna, "step_count", PROP_INT, PROP_NONE);
	RNA_def_property_int_sdna(prop, NULL, "numstep");
	RNA_def_property_range(prop, 1.f, 50.f);
	RNA_def_property_ui_text(prop, "Num steps", "Divide the frame interval into this many steps");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Itasc_update");

	prop = RNA_def_property(srna, "mode", PROP_ENUM, PROP_NONE);
	RNA_def_property_enum_bitflag_sdna(prop, NULL, "flag");
	RNA_def_property_enum_items(prop, prop_itasc_mode_items);
	RNA_def_property_ui_text(prop, "Mode", NULL);
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Itasc_update_rebuild");

	prop = RNA_def_property(srna, "reiteration_method", PROP_ENUM, PROP_NONE);
	RNA_def_property_enum_bitflag_sdna(prop, NULL, "flag");
	RNA_def_property_enum_items(prop, prop_itasc_reiteration_items);
	RNA_def_property_ui_text(prop, "Reiteration",
	                         "Defines if the solver is allowed to reiterate (converge until "
	                         "precision is met) on none, first or all frames");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Itasc_update");

	prop = RNA_def_property(srna, "use_auto_step", PROP_BOOLEAN, PROP_NONE);
	RNA_def_property_boolean_sdna(prop, NULL, "flag", ITASC_AUTO_STEP);
	RNA_def_property_ui_text(prop, "Auto step",
	                         "Automatically determine the optimal number of steps for best "
	                         "performance/accuracy trade off");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Itasc_update");

	prop = RNA_def_property(srna, "step_min", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "minstep");
	RNA_def_property_range(prop, 0.0f, 0.1f);
	RNA_def_property_ui_text(prop, "Min step", "Lower bound for timestep in second in case of automatic substeps");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Itasc_update");

	prop = RNA_def_property(srna, "step_max", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "maxstep");
	RNA_def_property_range(prop, 0.0f, 1.0f);
	RNA_def_property_ui_text(prop, "Max step", "Higher bound for timestep in second in case of automatic substeps");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Itasc_update");

	prop = RNA_def_property(srna, "feedback", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "feedback");
	RNA_def_property_range(prop, 0.0f, 100.0f);
	RNA_def_property_ui_text(prop, "Feedback",
	                         "Feedback coefficient for error correction, average response time is 1/feedback "
	                         "(default=20)");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Itasc_update");

	prop = RNA_def_property(srna, "velocity_max", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "maxvel");
	RNA_def_property_range(prop, 0.0f, 100.0f);
	RNA_def_property_ui_text(prop, "Max Velocity", "Maximum joint velocity in rad/s (default=50)");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Itasc_update");

	prop = RNA_def_property(srna, "solver", PROP_ENUM, PROP_NONE);
	RNA_def_property_enum_sdna(prop, NULL, "solver");
	RNA_def_property_enum_items(prop, prop_solver_items);
	RNA_def_property_ui_text(prop, "Solver", "Solving method selection: automatic damping or manual damping");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Itasc_update_rebuild");

	prop = RNA_def_property(srna, "damping_max", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "dampmax");
	RNA_def_property_range(prop, 0.0f, 1.0f);
	RNA_def_property_ui_text(prop, "Damp",
	                         "Maximum damping coefficient when singular value is nearly 0 "
	                         "(higher values=more stability, less reactivity - default=0.5)");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Itasc_update");

	prop = RNA_def_property(srna, "damping_epsilon", PROP_FLOAT, PROP_NONE);
	RNA_def_property_float_sdna(prop, NULL, "dampeps");
	RNA_def_property_range(prop, 0.0f, 1.0f);
	RNA_def_property_ui_text(prop, "Epsilon",
	                         "Singular value under which damping is progressively applied "
	                         "(higher values=more stability, less reactivity - default=0.1)");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Itasc_update");
}

static void rna_def_pose_ikparam(BlenderRNA *brna)
{
	StructRNA *srna;
	PropertyRNA *prop;

	srna = RNA_def_struct(brna, "IKParam", NULL);
	RNA_def_struct_sdna(srna, "bIKParam");
	RNA_def_struct_ui_text(srna, "IKParam", "Base type for IK solver parameters");
	RNA_def_struct_refine_func(srna, "rna_IKParam_refine");

	prop = RNA_def_property(srna, "ik_solver", PROP_ENUM, PROP_NONE);
	RNA_def_property_enum_sdna(prop, NULL, "iksolver");
	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
	RNA_def_property_enum_items(prop, prop_iksolver_items);
	RNA_def_property_ui_text(prop, "IK Solver", "IK solver for which these parameters are defined");
}

/* pose.bone_groups */
static void rna_def_bone_groups(BlenderRNA *brna, PropertyRNA *cprop)
{
	StructRNA *srna;
	PropertyRNA *prop;

/*	FunctionRNA *func; */
/*	PropertyRNA *parm; */

	RNA_def_property_srna(cprop, "BoneGroups");
	srna = RNA_def_struct(brna, "BoneGroups", NULL);
	RNA_def_struct_sdna(srna, "bPose");
	RNA_def_struct_ui_text(srna, "Bone Groups", "Collection of bone groups");

	prop = RNA_def_property(srna, "active", PROP_POINTER, PROP_NONE);
	RNA_def_property_struct_type(prop, "BoneGroup");
	RNA_def_property_flag(prop, PROP_EDITABLE);
	RNA_def_property_pointer_funcs(prop, "rna_Pose_active_bone_group_get",
	                               "rna_Pose_active_bone_group_set", NULL, NULL);
	RNA_def_property_ui_text(prop, "Active Bone Group", "Active bone group for this pose");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_update");
	
	prop = RNA_def_property(srna, "active_index", PROP_INT, PROP_UNSIGNED);
	RNA_def_property_int_sdna(prop, NULL, "active_group");
	RNA_def_property_int_funcs(prop, "rna_Pose_active_bone_group_index_get", "rna_Pose_active_bone_group_index_set",
	                           "rna_Pose_active_bone_group_index_range");
	RNA_def_property_ui_text(prop, "Active Bone Group Index", "Active index in bone groups array");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_update");
}

static void rna_def_pose(BlenderRNA *brna)
{
	StructRNA *srna;
	PropertyRNA *prop;
	
	/* struct definition */
	srna = RNA_def_struct(brna, "Pose", NULL);
	RNA_def_struct_sdna(srna, "bPose");
	RNA_def_struct_ui_text(srna, "Pose", "A collection of pose channels, including settings for animating bones");

	/* pose channels */
	prop = RNA_def_property(srna, "bones", PROP_COLLECTION, PROP_NONE);
	RNA_def_property_collection_sdna(prop, NULL, "chanbase", NULL);
	RNA_def_property_struct_type(prop, "PoseBone");
	RNA_def_property_ui_text(prop, "Pose Bones", "Individual pose bones for the armature");
	/* can be removed, only for fast lookup */
	RNA_def_property_collection_funcs(prop, NULL, NULL, NULL, NULL, NULL, NULL, "rna_PoseBones_lookup_string", NULL);

	/* bone groups */
	prop = RNA_def_property(srna, "bone_groups", PROP_COLLECTION, PROP_NONE);
	RNA_def_property_collection_sdna(prop, NULL, "agroups", NULL);
	RNA_def_property_struct_type(prop, "BoneGroup");
	RNA_def_property_ui_text(prop, "Bone Groups", "Groups of the bones");
	rna_def_bone_groups(brna, prop);
	
	/* ik solvers */
	prop = RNA_def_property(srna, "ik_solver", PROP_ENUM, PROP_NONE);
	RNA_def_property_enum_sdna(prop, NULL, "iksolver");
	RNA_def_property_enum_funcs(prop, NULL, "rna_Pose_ik_solver_set", NULL);
	RNA_def_property_enum_items(prop, prop_iksolver_items);
	RNA_def_property_ui_text(prop, "IK Solver", "Selection of IK solver for IK chain");
	RNA_def_property_update(prop, NC_OBJECT | ND_POSE, "rna_Pose_ik_solver_update");

	prop = RNA_def_property(srna, "ik_param", PROP_POINTER, PROP_NONE);
	RNA_def_property_struct_type(prop, "IKParam");
	RNA_def_property_pointer_funcs(prop, "rna_Pose_ikparam_get", NULL, "rna_Pose_ikparam_typef", NULL);
	RNA_def_property_clear_flag(prop, PROP_EDITABLE);
	RNA_def_property_ui_text(prop, "IK Param", "Parameters for IK solver");
	
	/* animviz */
	rna_def_animviz_common(srna);
	
	RNA_api_pose(srna);
}

void RNA_def_pose(BlenderRNA *brna)
{
	rna_def_pose(brna);
	rna_def_pose_channel(brna);
	rna_def_pose_ikparam(brna);
	rna_def_pose_itasc(brna);
	rna_def_bone_group(brna);
}

#endif
