static void ui_node_draw_node(uiLayout *layout, bContext *C, bNodeTree *ntree, bNode *node, int depth)
{
	bNodeSocket *input;
	uiLayout *col, *split;
	PointerRNA nodeptr;

	RNA_pointer_create(&ntree->id, &RNA_Node, node, &nodeptr);

	if (node->typeinfo->draw_buttons) {
		if (node->type != NODE_GROUP) {
			split = uiLayoutSplit(layout, 0.35f, false);
			col = uiLayoutColumn(split, false);
			col = uiLayoutColumn(split, false);

			node->typeinfo->draw_buttons(col, C, &nodeptr);
		}
	}

	for (input = node->inputs.first; input; input = input->next)
		ui_node_draw_input(layout, C, ntree, node, input, depth + 1);
}

void operator_wrapper(wmOperatorType *ot, void *userdata)
{
	/* take care not to overwrite anything set in
	 * WM_operatortype_append_ptr before opfunc() is called */
	StructRNA *srna = ot->srna;
	*ot = *((wmOperatorType *)userdata);
	ot->srna = srna; /* restore */

	operator_properties_init(ot);

	{	/* XXX - not nice, set the first enum as searchable, should have a way for python to set */
		PointerRNA ptr;
		PropertyRNA *prop;

		RNA_pointer_create(NULL, ot->srna, NULL, &ptr);
		prop = RNA_struct_find_property(&ptr, "type");
		if (prop) {
			ot->prop = prop;
		}
	}
}

PyObject *PYOP_wrap_macro_define(PyObject *UNUSED(self), PyObject *args)
{
	wmOperatorType *ot;
	wmOperatorTypeMacro *otmacro;
	PyObject *macro;
	PointerRNA ptr_otmacro;
	StructRNA *srna;

	char *opname;
	const char *macroname;

	if (!PyArg_ParseTuple(args, "Os:_bpy.ops.macro_define", &macro, &opname))
		return NULL;

	if (WM_operatortype_find(opname, TRUE) == NULL) {
		PyErr_Format(PyExc_ValueError,
		             "Macro Define: '%s' is not a valid operator id",
		             opname);
		return NULL;
	}

	/* identifiers */
	srna = srna_from_self(macro, "Macro Define:");
	macroname = RNA_struct_identifier(srna);

	ot = WM_operatortype_find(macroname, TRUE);

	if (!ot) {
		PyErr_Format(PyExc_ValueError,
		             "Macro Define: '%s' is not a valid macro or hasn't been registered yet",
		             macroname);
		return NULL;
	}

	otmacro = WM_operatortype_macro_define(ot, opname);

	RNA_pointer_create(NULL, &RNA_OperatorMacro, otmacro, &ptr_otmacro);

	return pyrna_struct_CreatePyObject(&ptr_otmacro);
}

static int panel_poll(const bContext *C, PanelType *pt)
{
    PointerRNA ptr;
    ParameterList list;
    FunctionRNA *func;
    void *ret;
    int visible;

    RNA_pointer_create(NULL, pt->ext.srna, NULL, &ptr); /* dummy */
    func= RNA_struct_find_function(&ptr, "poll");

    RNA_parameter_list_create(&list, &ptr, func);
    RNA_parameter_set_lookup(&list, "context", &C);
    pt->ext.call((bContext *)C, &ptr, func, &list);

    RNA_parameter_get_lookup(&list, "visible", &ret);
    visible= *(int*)ret;

    RNA_parameter_list_free(&list);

    return visible;
}

/* show popup to determine settings */
static int pose_calculate_paths_invoke(bContext *C, wmOperator *op, const wmEvent *UNUSED(event))
{	
	Object *ob = BKE_object_pose_armature_get(CTX_data_active_object(C));
	
	if (ELEM(NULL, ob, ob->pose))
		return OPERATOR_CANCELLED;
	
	/* set default settings from existing/stored settings */
	{
		bAnimVizSettings *avs = &ob->pose->avs;
		PointerRNA avs_ptr;
		
		RNA_int_set(op->ptr, "start_frame", avs->path_sf);
		RNA_int_set(op->ptr, "end_frame", avs->path_ef);
		
		RNA_pointer_create(NULL, &RNA_AnimVizMotionPaths, avs, &avs_ptr);
		RNA_enum_set(op->ptr, "bake_location", RNA_enum_get(&avs_ptr, "bake_location"));
	}
	
	/* show popup dialog to allow editing of range... */
	// FIXME: hardcoded dimensions here are just arbitrary
	return WM_operator_props_dialog_popup(C, op, 10 * UI_UNIT_X, 10 * UI_UNIT_Y);
}

/* Add new data source for relative Keying Sets */
void ANIM_relative_keyingset_add_source(ListBase *dsources, ID *id, StructRNA *srna, void *data)
{
	tRKS_DSource *ds;
	
	/* sanity checks 
	 *	- we must have somewhere to output the data
	 *	- we must have both srna+data (and with id too optionally), or id by itself only
	 */
	if (dsources == NULL)
		return;
	if (ELEM(NULL, srna, data) && (id == NULL))
		return;
	
	/* allocate new elem, and add to the list */
	ds = MEM_callocN(sizeof(tRKS_DSource), "tRKS_DSource");
	BLI_addtail(dsources, ds);
	
	/* depending on what data we have, create using ID or full pointer call */
	if (srna && data)
		RNA_pointer_create(id, srna, data, &ds->ptr);
	else
		RNA_id_pointer_create(id, &ds->ptr);
}

static PyObject *pyop_getinstance(PyObject *UNUSED(self), PyObject *value)
{
	wmOperatorType *ot;
	wmOperator *op;
	PointerRNA ptr;
	const char *opname = _PyUnicode_AsString(value);
	BPy_StructRNA *pyrna = NULL;

	if (opname == NULL) {
		PyErr_SetString(PyExc_TypeError, "_bpy.ops.get_instance() expects a string argument");
		return NULL;
	}
	ot = WM_operatortype_find(opname, true);
	if (ot == NULL) {
		PyErr_Format(PyExc_KeyError, "_bpy.ops.get_instance(\"%s\") not found", opname);
		return NULL;
	}

#ifdef PYRNA_FREE_SUPPORT
	op = MEM_callocN(sizeof(wmOperator), __func__);
#else
	op = PyMem_MALLOC(sizeof(wmOperator));
	memset(op, 0, sizeof(wmOperator));
#endif
	BLI_strncpy(op->idname, op->idname, sizeof(op->idname)); /* in case its needed */
	op->type = ot;

	RNA_pointer_create(NULL, &RNA_Operator, op, &ptr);

	pyrna = (BPy_StructRNA *)pyrna_struct_CreatePyObject(&ptr);
#ifdef PYRNA_FREE_SUPPORT
	pyrna->freeptr = true;
#endif
	op->ptr = &pyrna->ptr;

	return (PyObject *)pyrna;
}

static int actuator_add_exec(bContext *C, wmOperator *op)
{
    Object *ob;
    bActuator *act;
    PointerRNA act_ptr;
    PropertyRNA *prop;
    const char *act_name;
    char name[MAX_NAME];
    int type = RNA_enum_get(op->ptr, "type");

    ob = edit_object_property_get(C, op);
    if (!ob)
        return OPERATOR_CANCELLED;

    act = new_actuator(type);
    BLI_addtail(&(ob->actuators), act);

    /* set the actuator name based on rna type enum */
    RNA_pointer_create((ID *)ob, &RNA_Actuator, act, &act_ptr);
    prop = RNA_struct_find_property(&act_ptr, "type");

    RNA_string_get(op->ptr, "name", name);
    if (*name) {
        BLI_strncpy(act->name, name, sizeof(act->name));
    }
    else {
        RNA_property_enum_name(C, &act_ptr, prop, RNA_property_enum_get(&act_ptr, prop), &act_name);
        BLI_strncpy(act->name, act_name, sizeof(act->name));
    }

    make_unique_prop_names(C, act->name);
    ob->scaflag |= OB_SHOWACT;

    WM_event_add_notifier(C, NC_LOGIC, NULL);

    return OPERATOR_FINISHED;
}

static int sensor_add_exec(bContext *C, wmOperator *op)
{
	Object *ob;
	bSensor *sens;
	PointerRNA sens_ptr;
	PropertyRNA *prop;
	const char *sens_name;
	char name[MAX_NAME];
	int type = RNA_enum_get(op->ptr, "type");

	ob = edit_object_property_get(C, op);
	if (!ob)
		return OPERATOR_CANCELLED;

	sens = new_sensor(type);
	BLI_addtail(&(ob->sensors), sens);
	
	/* set the sensor name based on rna type enum */
	RNA_pointer_create((ID *)ob, &RNA_Sensor, sens, &sens_ptr);
	prop = RNA_struct_find_property(&sens_ptr, "type");

	RNA_string_get(op->ptr, "name", name);
	if (*name) {
		BLI_strncpy(sens->name, name, sizeof(sens->name));
	}
	else {
		RNA_property_enum_name(C, &sens_ptr, prop, RNA_property_enum_get(&sens_ptr, prop), &sens_name);
		BLI_strncpy(sens->name, sens_name, sizeof(sens->name));
	}

	BLI_uniquename(&ob->sensors, sens, DATA_("Sensor"), '.', offsetof(bSensor, name), sizeof(sens->name));
	ob->scaflag |= OB_SHOWSENS;

	WM_event_add_notifier(C, NC_LOGIC, NULL);
	
	return OPERATOR_FINISHED;
}

void wm_stereo3d_set_draw(bContext *UNUSED(C), wmOperator *op)
{
	Stereo3dData *s3dd = op->customdata;
	PointerRNA stereo3d_format_ptr;
	uiLayout *layout = op->layout;
	uiLayout *col;

	RNA_pointer_create(NULL, &RNA_Stereo3dDisplay, &s3dd->stereo3d_format, &stereo3d_format_ptr);

	col = uiLayoutColumn(layout, false);
	uiItemR(col, &stereo3d_format_ptr, "display_mode", 0, NULL, ICON_NONE);

	switch (s3dd->stereo3d_format.display_mode) {
		case S3D_DISPLAY_ANAGLYPH:
		{
			uiItemR(col, &stereo3d_format_ptr, "anaglyph_type", 0, NULL, ICON_NONE);
			break;
		}
		case S3D_DISPLAY_INTERLACE:
		{
			uiItemR(col, &stereo3d_format_ptr, "interlace_type", 0, NULL, ICON_NONE);
			uiItemR(col, &stereo3d_format_ptr, "use_interlace_swap", 0, NULL, ICON_NONE);
			break;
		}
		case S3D_DISPLAY_SIDEBYSIDE:
		{
			uiItemR(col, &stereo3d_format_ptr, "use_sidebyside_crosseyed", 0, NULL, ICON_NONE);
			/* fall-through */
		}
		case S3D_DISPLAY_PAGEFLIP:
		case S3D_DISPLAY_TOPBOTTOM:
		default:
		{
			break;
		}
	}
}

static bool menu_poll(const bContext *C, MenuType *pt)
{
	extern FunctionRNA rna_Menu_poll_func;

	PointerRNA ptr;
	ParameterList list;
	FunctionRNA *func;
	void *ret;
	bool visible;

	RNA_pointer_create(NULL, pt->ext.srna, NULL, &ptr); /* dummy */
	func = &rna_Menu_poll_func; /* RNA_struct_find_function(&ptr, "poll"); */

	RNA_parameter_list_create(&list, &ptr, func);
	RNA_parameter_set_lookup(&list, "context", &C);
	pt->ext.call((bContext *)C, &ptr, func, &list);

	RNA_parameter_get_lookup(&list, "visible", &ret);
	visible = *(bool *)ret;

	RNA_parameter_list_free(&list);

	return visible;
}

/* draw settings for noise modifier */
static void draw_modifier__noise(uiLayout *layout, ID *id, FModifier *fcm, short UNUSED(width))
{
	uiLayout *split, *col;
	PointerRNA ptr;
	
	/* init the RNA-pointer */
	RNA_pointer_create(id, &RNA_FModifierNoise, fcm, &ptr);
	
	/* blending mode */
	uiItemR(layout, &ptr, "blend_type", 0, NULL, ICON_NONE);
	
	/* split into 2 columns */
	split = uiLayoutSplit(layout, 0.5f, FALSE);
	
	/* col 1 */
	col = uiLayoutColumn(split, FALSE);
	uiItemR(col, &ptr, "scale", 0, NULL, ICON_NONE);
	uiItemR(col, &ptr, "strength", 0, NULL, ICON_NONE);
	
	/* col 2 */
	col = uiLayoutColumn(split, FALSE);
	uiItemR(col, &ptr, "phase", 0, NULL, ICON_NONE);
	uiItemR(col, &ptr, "depth", 0, NULL, ICON_NONE);
}

/* draw settings for generator modifier */
static void draw_modifier__generator(uiLayout *layout, ID *id, FModifier *fcm, short width)
{
	FMod_Generator *data = (FMod_Generator *)fcm->data;
	uiLayout /* *col, */ /* UNUSED */ *row;
	uiBlock *block;
	uiBut *but;
	PointerRNA ptr;
	short bwidth = width - 1.5 * UI_UNIT_X; /* max button width */
	
	/* init the RNA-pointer */
	RNA_pointer_create(id, &RNA_FModifierFunctionGenerator, fcm, &ptr);
	
	/* basic settings (backdrop + mode selector + some padding) */
	/* col = uiLayoutColumn(layout, TRUE); */ /* UNUSED */
	block = uiLayoutGetBlock(layout);
	uiBlockBeginAlign(block);
	but = uiDefButR(block, MENU, B_FMODIFIER_REDRAW, NULL, 0, 0, bwidth, UI_UNIT_Y, &ptr, "mode", -1, 0, 0, -1, -1, NULL);
	uiButSetFunc(but, validate_fmodifier_cb, fcm, NULL);
	
	uiDefButR(block, TOG, B_FMODIFIER_REDRAW, NULL, 0, 0, bwidth, UI_UNIT_Y, &ptr, "use_additive", -1, 0, 0, -1, -1, NULL);
	uiBlockEndAlign(block);
	
	/* now add settings for individual modes */
	switch (data->mode) {
		case FCM_GENERATOR_POLYNOMIAL: /* polynomial expression */
		{
			float *cp = NULL;
			char xval[32];
			unsigned int i;
			int maxXWidth;
			
			/* draw polynomial order selector */
			row = uiLayoutRow(layout, FALSE);
			block = uiLayoutGetBlock(row);
			but = uiDefButI(block, NUM, B_FMODIFIER_REDRAW, IFACE_("Poly Order:"), 0.5f * UI_UNIT_X, 0, bwidth, UI_UNIT_Y,
			                &data->poly_order, 1, 100, 0, 0,
			                TIP_("'Order' of the Polynomial (for a polynomial with n terms, 'order' is n-1)"));
			uiButSetFunc(but, validate_fmodifier_cb, fcm, NULL);
			
			
			/* calculate maximum width of label for "x^n" labels */
			if (data->arraysize > 2) {
				BLI_snprintf(xval, sizeof(xval), "x^%u", data->arraysize);
				maxXWidth = UI_GetStringWidth(xval) + 0.5 * UI_UNIT_X; /* XXX: UI_GetStringWidth is not accurate */
			}
			else {
				/* basic size (just "x") */
				maxXWidth = UI_GetStringWidth("x") + 0.5 * UI_UNIT_X;
			}
			
			/* draw controls for each coefficient and a + sign at end of row */
			row = uiLayoutRow(layout, TRUE);
			block = uiLayoutGetBlock(row);
			
			cp = data->coefficients;
			for (i = 0; (i < data->arraysize) && (cp); i++, cp++) {
				/* To align with first line... */
				if (i)
					uiDefBut(block, LABEL, 1, "   ", 0, 0, 2 * UI_UNIT_X, UI_UNIT_Y, NULL, 0.0, 0.0, 0, 0, "");
				else
					uiDefBut(block, LABEL, 1, "y =", 0, 0, 2 * UI_UNIT_X, UI_UNIT_Y, NULL, 0.0, 0.0, 0, 0, "");
				
				/* coefficient */
				uiDefButF(block, NUM, B_FMODIFIER_REDRAW, "", 0, 0, bwidth / 2, UI_UNIT_Y, cp, -UI_FLT_MAX, UI_FLT_MAX,
				          10, 3, TIP_("Coefficient for polynomial"));
				
				/* 'x' param (and '+' if necessary) */
				if (i == 0)
					BLI_strncpy(xval, "", sizeof(xval));
				else if (i == 1)
					BLI_strncpy(xval, "x", sizeof(xval));
				else
					BLI_snprintf(xval, sizeof(xval), "x^%u", i);
				uiDefBut(block, LABEL, 1, xval, 0, 0, maxXWidth, UI_UNIT_Y, NULL, 0.0, 0.0, 0, 0, TIP_("Power of x"));
				
				if ( (i != (data->arraysize - 1)) || ((i == 0) && data->arraysize == 2) ) {
					uiDefBut(block, LABEL, 1, "+", 0, 0, UI_UNIT_X, UI_UNIT_Y, NULL, 0.0, 0.0, 0, 0, "");
					
					/* next coefficient on a new row */
					row = uiLayoutRow(layout, TRUE);
					block = uiLayoutGetBlock(row);
				}
				else {
					/* For alignment in UI! */
					uiDefBut(block, LABEL, 1, " ", 0, 0, UI_UNIT_X, UI_UNIT_Y, NULL, 0.0, 0.0, 0, 0, "");
				}
			}
			break;
		}
		
		case FCM_GENERATOR_POLYNOMIAL_FACTORISED: /* Factorized polynomial expression */
		{
			float *cp = NULL;
			unsigned int i;
			
			/* draw polynomial order selector */
			row = uiLayoutRow(layout, FALSE);
			block = uiLayoutGetBlock(row);
			but = uiDefButI(block, NUM, B_FMODIFIER_REDRAW, IFACE_("Poly Order:"), 0, 0, width - 1.5 * UI_UNIT_X, UI_UNIT_Y,
//.........这里部分代码省略.........

//.........这里部分代码省略.........
					= new KX_ParentActuator(gameobj,
					mode,
					addToCompound,
					ghost,
					tmpgob);
				baseact = tmpparact;
				break;
			}
		
		case ACT_ARMATURE:
			{
				bArmatureActuator* armAct = (bArmatureActuator*) bact->data;
				KX_GameObject *tmpgob = converter->FindGameObject(armAct->target);
				KX_GameObject *subgob = converter->FindGameObject(armAct->subtarget);
				BL_ArmatureActuator* tmparmact = new BL_ArmatureActuator(
				            gameobj,
				            armAct->type,
				            armAct->posechannel,
				            armAct->constraint,
				            tmpgob,
				            subgob,
				            armAct->weight,
				            armAct->influence);
				baseact = tmparmact;
				break;
			}
		case ACT_STEERING:
			{
				bSteeringActuator *stAct = (bSteeringActuator *) bact->data;
				KX_GameObject *navmeshob = NULL;
				if (stAct->navmesh)
				{
					PointerRNA settings_ptr;
					RNA_pointer_create((ID *)stAct->navmesh, &RNA_GameObjectSettings, stAct->navmesh, &settings_ptr);
					if (RNA_enum_get(&settings_ptr, "physics_type") == OB_BODY_TYPE_NAVMESH)
						navmeshob = converter->FindGameObject(stAct->navmesh);
				}
				KX_GameObject *targetob = converter->FindGameObject(stAct->target);

				int mode = KX_SteeringActuator::KX_STEERING_NODEF;
				switch (stAct->type) {
				case ACT_STEERING_SEEK:
					mode = KX_SteeringActuator::KX_STEERING_SEEK;
					break;
				case ACT_STEERING_FLEE:
					mode = KX_SteeringActuator::KX_STEERING_FLEE;
					break;
				case ACT_STEERING_PATHFOLLOWING:
					mode = KX_SteeringActuator::KX_STEERING_PATHFOLLOWING;
					break;
				}

				bool selfTerminated = (stAct->flag & ACT_STEERING_SELFTERMINATED) !=0;
				bool enableVisualization = (stAct->flag & ACT_STEERING_ENABLEVISUALIZATION) !=0;
				short facingMode = (stAct->flag & ACT_STEERING_AUTOMATICFACING) ? stAct->facingaxis : 0;
				bool normalup = (stAct->flag & ACT_STEERING_NORMALUP) !=0;
				bool lockzvel = (stAct->flag & ACT_STEERING_LOCKZVEL) !=0;
				KX_SteeringActuator *tmpstact
					= new KX_SteeringActuator(gameobj, mode, targetob, navmeshob,stAct->dist, 
					stAct->velocity, stAct->acceleration, stAct->turnspeed, 
					selfTerminated, stAct->updateTime,
					scene->GetObstacleSimulation(), facingMode, normalup, enableVisualization, lockzvel);
				baseact = tmpstact;
				break;
			}
		case ACT_MOUSE:

/* returns 1 if its OK */
static int node_group_separate_selected(bNodeTree *ntree, bNodeTree *ngroup, float offx, float offy, int make_copy)
{
	bNodeLink *link, *link_next;
	bNode *node, *node_next, *newnode;
	ListBase anim_basepaths = {NULL, NULL};
	
	/* deselect all nodes in the target tree */
	for (node = ntree->nodes.first; node; node = node->next)
		nodeSetSelected(node, FALSE);
	
	/* clear new pointers, set in nodeCopyNode */
	for (node = ngroup->nodes.first; node; node = node->next)
		node->new_node = NULL;
	
	/* add selected nodes into the ntree */
	for (node = ngroup->nodes.first; node; node = node_next) {
		node_next = node->next;
		if (!(node->flag & NODE_SELECT))
			continue;
		
		/* ignore interface nodes */
		if (ELEM(node->type, NODE_GROUP_INPUT, NODE_GROUP_OUTPUT)) {
			nodeSetSelected(node, FALSE);
			continue;
		}
		
		if (make_copy) {
			/* make a copy */
			newnode = nodeCopyNode(ngroup, node);
		}
		else {
			/* use the existing node */
			newnode = node;
		}
		
		/* keep track of this node's RNA "base" path (the part of the path identifying the node) 
		 * if the old nodetree has animation data which potentially covers this node
		 */
		if (ngroup->adt) {
			PointerRNA ptr;
			char *path;
			
			RNA_pointer_create(&ngroup->id, &RNA_Node, newnode, &ptr);
			path = RNA_path_from_ID_to_struct(&ptr);
			
			if (path)
				BLI_addtail(&anim_basepaths, BLI_genericNodeN(path));
		}
		
		/* ensure valid parent pointers, detach if parent stays inside the group */
		if (newnode->parent && !(newnode->parent->flag & NODE_SELECT))
			nodeDetachNode(newnode);
		
		/* migrate node */
		BLI_remlink(&ngroup->nodes, newnode);
		BLI_addtail(&ntree->nodes, newnode);
		
		/* ensure unique node name in the node tree */
		nodeUniqueName(ntree, newnode);

		if (!newnode->parent) {
			newnode->locx += offx;
			newnode->locy += offy;		
		}
	}
	
	/* add internal links to the ntree */
	for (link = ngroup->links.first; link; link = link_next) {
		int fromselect = (link->fromnode && (link->fromnode->flag & NODE_SELECT));
		int toselect = (link->tonode && (link->tonode->flag & NODE_SELECT));
		link_next = link->next;
		
		if (make_copy) {
			/* make a copy of internal links */
			if (fromselect && toselect)
				nodeAddLink(ntree, link->fromnode->new_node, link->fromsock->new_sock, link->tonode->new_node, link->tosock->new_sock);
		}
		else {
			/* move valid links over, delete broken links */
			if (fromselect && toselect) {
				BLI_remlink(&ngroup->links, link);
				BLI_addtail(&ntree->links, link);
			}
			else if (fromselect || toselect) {
				nodeRemLink(ngroup, link);
			}
		}
	}
	
	/* and copy across the animation,
	 * note that the animation data's action can be NULL here */
	if (ngroup->adt) {
		LinkData *ld, *ldn = NULL;
		
		/* now perform the moving */
		BKE_animdata_separate_by_basepath(&ngroup->id, &ntree->id, &anim_basepaths);
		
		/* paths + their wrappers need to be freed */
		for (ld = anim_basepaths.first; ld; ld = ldn) {
//.........这里部分代码省略.........

static void node_group_make_insert_selected(const bContext *C, bNodeTree *ntree, bNode *gnode)
{
	bNodeTree *ngroup = (bNodeTree *)gnode->id;
	bNodeLink *link, *linkn;
	bNode *node, *nextn;
	bNodeSocket *sock;
	ListBase anim_basepaths = {NULL, NULL};
	float min[2], max[2], center[2];
	int totselect;
	int expose_all = FALSE;
	bNode *input_node, *output_node;
	
	/* XXX rough guess, not nice but we don't have access to UI constants here ... */
	static const float offsetx = 200;
	static const float offsety = 0.0f;
	
	/* deselect all nodes in the target tree */
	for (node = ngroup->nodes.first; node; node = node->next)
		nodeSetSelected(node, FALSE);
	
	totselect = node_get_selected_minmax(ntree, gnode, min, max);
	add_v2_v2v2(center, min, max);
	mul_v2_fl(center, 0.5f);
	
	/* auto-add interface for "solo" nodes */
	if (totselect == 1)
		expose_all = TRUE;
	
	/* move nodes over */
	for (node = ntree->nodes.first; node; node = nextn) {
		nextn = node->next;
		if (node_group_make_use_node(node, gnode)) {
			/* keep track of this node's RNA "base" path (the part of the pat identifying the node) 
			 * if the old nodetree has animation data which potentially covers this node
			 */
			if (ntree->adt) {
				PointerRNA ptr;
				char *path;
				
				RNA_pointer_create(&ntree->id, &RNA_Node, node, &ptr);
				path = RNA_path_from_ID_to_struct(&ptr);
				
				if (path)
					BLI_addtail(&anim_basepaths, BLI_genericNodeN(path));
			}
			
			/* ensure valid parent pointers, detach if parent stays outside the group */
			if (node->parent && !(node->parent->flag & NODE_SELECT))
				nodeDetachNode(node);
			
			/* change node-collection membership */
			BLI_remlink(&ntree->nodes, node);
			BLI_addtail(&ngroup->nodes, node);
			
			/* ensure unique node name in the ngroup */
			nodeUniqueName(ngroup, node);
		}
	}
	
	/* move animation data over */
	if (ntree->adt) {
		LinkData *ld, *ldn = NULL;
		
		BKE_animdata_separate_by_basepath(&ntree->id, &ngroup->id, &anim_basepaths);
		
		/* paths + their wrappers need to be freed */
		for (ld = anim_basepaths.first; ld; ld = ldn) {
			ldn = ld->next;
			
			MEM_freeN(ld->data);
			BLI_freelinkN(&anim_basepaths, ld);
		}
	}
	
	/* node groups don't use internal cached data */
	ntreeFreeCache(ngroup);
	
	/* create input node */
	input_node = nodeAddStaticNode(C, ngroup, NODE_GROUP_INPUT);
	input_node->locx = min[0] - center[0] - offsetx;
	input_node->locy = -offsety;
	
	/* create output node */
	output_node = nodeAddStaticNode(C, ngroup, NODE_GROUP_OUTPUT);
	output_node->locx = max[0] - center[0] + offsetx;
	output_node->locy = -offsety;
	
	/* relink external sockets */
	for (link = ntree->links.first; link; link = linkn) {
		int fromselect = node_group_make_use_node(link->fromnode, gnode);
		int toselect = node_group_make_use_node(link->tonode, gnode);
		
		linkn = link->next;
		
		if ((fromselect && link->tonode == gnode) || (toselect && link->fromnode == gnode)) {
			/* remove all links to/from the gnode.
			 * this can remove link information, but there's no general way to preserve it.
			 */
			nodeRemLink(ntree, link);
		}
//.........这里部分代码省略.........

/* driver settings for active F-Curve (only for 'Drivers' mode) */
static void graph_panel_drivers(const bContext *C, Panel *pa)
{
	bAnimListElem *ale;
	FCurve *fcu;
	ChannelDriver *driver;
	DriverVar *dvar;
	
	PointerRNA driver_ptr;
	uiLayout *col;
	uiBlock *block;
	uiBut *but;
	
	/* Get settings from context */
	if (!graph_panel_context(C, &ale, &fcu))
		return;
	driver = fcu->driver;
	
	/* set event handler for panel */
	block = uiLayoutGetBlock(pa->layout); // xxx?
	uiBlockSetHandleFunc(block, do_graph_region_driver_buttons, NULL);
	
	/* general actions - management */
	col = uiLayoutColumn(pa->layout, FALSE);
	block = uiLayoutGetBlock(col);
	but = uiDefBut(block, BUT, B_IPO_DEPCHANGE, IFACE_("Update Dependencies"), 0, 0, 10 * UI_UNIT_X, 22,
	               NULL, 0.0, 0.0, 0, 0, TIP_("Force updates of dependencies"));
	uiButSetFunc(but, driver_update_flags_cb, fcu, NULL);

	but = uiDefBut(block, BUT, B_IPO_DEPCHANGE, IFACE_("Remove Driver"), 0, 0, 10 * UI_UNIT_X, 18,
	               NULL, 0.0, 0.0, 0, 0, TIP_("Remove this driver"));
	uiButSetNFunc(but, driver_remove_cb, MEM_dupallocN(ale), NULL);
		
	/* driver-level settings - type, expressions, and errors */
	RNA_pointer_create(ale->id, &RNA_Driver, driver, &driver_ptr);
	
	col = uiLayoutColumn(pa->layout, TRUE);
	block = uiLayoutGetBlock(col);
	uiItemR(col, &driver_ptr, "type", 0, NULL, ICON_NONE);

	/* show expression box if doing scripted drivers, and/or error messages when invalid drivers exist */
	if (driver->type == DRIVER_TYPE_PYTHON) {
		/* expression */
		uiItemR(col, &driver_ptr, "expression", 0, IFACE_("Expr"), ICON_NONE);

		/* errors? */
		if (driver->flag & DRIVER_FLAG_INVALID)
			uiItemL(col, IFACE_("ERROR: invalid Python expression"), ICON_ERROR);
	}
	else {
		/* errors? */
		if (driver->flag & DRIVER_FLAG_INVALID)
			uiItemL(col, IFACE_("ERROR: invalid target channel(s)"), ICON_ERROR);
	}
		
	col = uiLayoutColumn(pa->layout, TRUE);
	/* debug setting */
	uiItemR(col, &driver_ptr, "show_debug_info", 0, NULL, ICON_NONE);
		
	/* value of driver */
	if (driver->flag & DRIVER_FLAG_SHOWDEBUG) {
		uiLayout *row = uiLayoutRow(col, TRUE);
		char valBuf[32];
			
		uiItemL(row, IFACE_("Driver Value:"), ICON_NONE);
			
		BLI_snprintf(valBuf, sizeof(valBuf), "%.3f", driver->curval);
		uiItemL(row, valBuf, ICON_NONE);
	}
	
	/* add driver variables */
	col = uiLayoutColumn(pa->layout, FALSE);
	block = uiLayoutGetBlock(col);
	but = uiDefBut(block, BUT, B_IPO_DEPCHANGE, IFACE_("Add Variable"), 0, 0, 10 * UI_UNIT_X, UI_UNIT_Y,
	               NULL, 0.0, 0.0, 0, 0, TIP_("Add a new target variable for this Driver"));
	uiButSetFunc(but, driver_add_var_cb, driver, NULL);
	
	/* loop over targets, drawing them */
	for (dvar = driver->variables.first; dvar; dvar = dvar->next) {
		PointerRNA dvar_ptr;
		uiLayout *box, *row;
		
		/* sub-layout column for this variable's settings */
		col = uiLayoutColumn(pa->layout, TRUE);
		
		/* header panel */
		box = uiLayoutBox(col);
		/* first row context info for driver */
		RNA_pointer_create(ale->id, &RNA_DriverVariable, dvar, &dvar_ptr);

		row = uiLayoutRow(box, FALSE);
		block = uiLayoutGetBlock(row);
		/* variable name */
		uiItemR(row, &dvar_ptr, "name", 0, "", ICON_NONE);

		/* remove button */
		uiBlockSetEmboss(block, UI_EMBOSSN);
		but = uiDefIconBut(block, BUT, B_IPO_DEPCHANGE, ICON_X, 290, 0, UI_UNIT_X, UI_UNIT_Y,
		                   NULL, 0.0, 0.0, 0.0, 0.0, IFACE_("Delete target variable"));
		uiButSetFunc(but, driver_delete_var_cb, driver, dvar);
//.........这里部分代码省略.........

/* returns 1 if its OK */
static int node_group_ungroup(bNodeTree *ntree, bNode *gnode)
{
	bNodeLink *link, *linkn, *tlink;
	bNode *node, *nextnode;
	bNodeTree *ngroup, *wgroup;
	ListBase anim_basepaths = {NULL, NULL};
	
	ngroup = (bNodeTree *)gnode->id;
	
	/* clear new pointers, set in copytree */
	for (node = ntree->nodes.first; node; node = node->next)
		node->new_node = NULL;
	
	/* wgroup is a temporary copy of the NodeTree we're merging in
	 * - all of wgroup's nodes are transferred across to their new home
	 * - ngroup (i.e. the source NodeTree) is left unscathed
	 * - temp copy. don't change ID usercount
	 */
	wgroup = ntreeCopyTree_ex(ngroup, FALSE);
	
	/* Add the nodes into the ntree */
	for (node = wgroup->nodes.first; node; node = nextnode) {
		nextnode = node->next;
		
		/* Remove interface nodes.
		 * This also removes remaining links to and from interface nodes.
		 */
		if (ELEM(node->type, NODE_GROUP_INPUT, NODE_GROUP_OUTPUT)) {
			nodeFreeNode(wgroup, node);
			continue;
		}
		
		/* keep track of this node's RNA "base" path (the part of the path identifying the node) 
		 * if the old nodetree has animation data which potentially covers this node
		 */
		if (wgroup->adt) {
			PointerRNA ptr;
			char *path;
			
			RNA_pointer_create(&wgroup->id, &RNA_Node, node, &ptr);
			path = RNA_path_from_ID_to_struct(&ptr);
			
			if (path)
				BLI_addtail(&anim_basepaths, BLI_genericNodeN(path));
		}
		
		/* migrate node */
		BLI_remlink(&wgroup->nodes, node);
		BLI_addtail(&ntree->nodes, node);
		
		/* ensure unique node name in the node tree */
		nodeUniqueName(ntree, node);
		
		if (!node->parent) {
			node->locx += gnode->locx;
			node->locy += gnode->locy;
		}
		
		node->flag |= NODE_SELECT;
	}
	
	/* Add internal links to the ntree */
	for (link = wgroup->links.first; link; link = linkn) {
		linkn = link->next;
		BLI_remlink(&wgroup->links, link);
		BLI_addtail(&ntree->links, link);
	}
	
	/* and copy across the animation,
	 * note that the animation data's action can be NULL here */
	if (wgroup->adt) {
		LinkData *ld, *ldn = NULL;
		bAction *waction;
		
		/* firstly, wgroup needs to temporary dummy action that can be destroyed, as it shares copies */
		waction = wgroup->adt->action = BKE_action_copy(wgroup->adt->action);
		
		/* now perform the moving */
		BKE_animdata_separate_by_basepath(&wgroup->id, &ntree->id, &anim_basepaths);
		
		/* paths + their wrappers need to be freed */
		for (ld = anim_basepaths.first; ld; ld = ldn) {
			ldn = ld->next;
			
			MEM_freeN(ld->data);
			BLI_freelinkN(&anim_basepaths, ld);
		}
		
		/* free temp action too */
		if (waction) {
			BKE_libblock_free(&G.main->action, waction);
		}
	}
	
	/* free the group tree (takes care of user count) */
	BKE_libblock_free(&G.main->nodetree, wgroup);
	
	/* restore external links to and from the gnode */
	/* note: the nodes have been copied to intermediate wgroup first (so need to use new_node),
//.........这里部分代码省略.........

static void graph_panel_key_properties(const bContext *C, Panel *pa)
{
	bAnimListElem *ale;
	FCurve *fcu;
	BezTriple *bezt, *prevbezt;
	
	uiLayout *layout = pa->layout;
	uiLayout *col;
	uiBlock *block;

	if (!graph_panel_context(C, &ale, &fcu))
		return;
	
	block = uiLayoutGetBlock(layout);
	uiBlockSetHandleFunc(block, do_graph_region_buttons, NULL);
	
	/* only show this info if there are keyframes to edit */
	if (get_active_fcurve_keyframe_edit(fcu, &bezt, &prevbezt)) {
		PointerRNA bezt_ptr, id_ptr, fcu_prop_ptr;
		PropertyRNA *fcu_prop = NULL;
		uiBut *but;
		int unit = B_UNIT_NONE;
		
		/* RNA pointer to keyframe, to allow editing */
		RNA_pointer_create(ale->id, &RNA_Keyframe, bezt, &bezt_ptr);
		
		/* get property that F-Curve affects, for some unit-conversion magic */
		RNA_id_pointer_create(ale->id, &id_ptr);
		if (RNA_path_resolve(&id_ptr, fcu->rna_path, &fcu_prop_ptr, &fcu_prop) && fcu_prop) {
			/* determine the unit for this property */
			unit = RNA_SUBTYPE_UNIT(RNA_property_subtype(fcu_prop));
		}		
		
		/* interpolation */
		col = uiLayoutColumn(layout, FALSE);
		uiItemR(col, &bezt_ptr, "interpolation", 0, NULL, ICON_NONE);
			
		/* numerical coordinate editing 
		 *  - we use the button-versions of the calls so that we can attach special update handlers
		 *    and unit conversion magic that cannot be achieved using a purely RNA-approach
		 */
		// XXX: 
		col = uiLayoutColumn(layout, TRUE);
		/* keyframe itself */
		{
			uiItemL(col, IFACE_("Key:"), ICON_NONE);

			but = uiDefButR(block, NUM, B_REDR, IFACE_("Frame"), 0, 0, UI_UNIT_X, UI_UNIT_Y,
			                &bezt_ptr, "co", 0, 0, 0, -1, -1, NULL);
			uiButSetFunc(but, graphedit_activekey_update_cb, fcu, bezt);

			but = uiDefButR(block, NUM, B_REDR, IFACE_("Value"), 0, 0, UI_UNIT_X, UI_UNIT_Y,
			                &bezt_ptr, "co", 1, 0, 0, -1, -1, NULL);
			uiButSetFunc(but, graphedit_activekey_update_cb, fcu, bezt);
			uiButSetUnitType(but, unit);
		}

		/* previous handle - only if previous was Bezier interpolation */
		if ((prevbezt) && (prevbezt->ipo == BEZT_IPO_BEZ)) {
			uiItemL(col, IFACE_("Left Handle:"), ICON_NONE);

			but = uiDefButR(block, NUM, B_REDR, "X", 0, 0, UI_UNIT_X, UI_UNIT_Y,
			                &bezt_ptr, "handle_left", 0, 0, 0, -1, -1, NULL);
			uiButSetFunc(but, graphedit_activekey_handles_cb, fcu, bezt);

			but = uiDefButR(block, NUM, B_REDR, "Y", 0, 0, UI_UNIT_X, UI_UNIT_Y,
			                &bezt_ptr, "handle_left", 1, 0, 0, -1, -1, NULL);
			uiButSetFunc(but, graphedit_activekey_handles_cb, fcu, bezt);
			uiButSetUnitType(but, unit);
		}

		/* next handle - only if current is Bezier interpolation */
		if (bezt->ipo == BEZT_IPO_BEZ) {
			uiItemL(col, IFACE_("Right Handle:"), ICON_NONE);

			but = uiDefButR(block, NUM, B_REDR, "X", 0, 0, UI_UNIT_X, UI_UNIT_Y,
			                &bezt_ptr, "handle_right", 0, 0, 0, -1, -1, NULL);
			uiButSetFunc(but, graphedit_activekey_handles_cb, fcu, bezt);

			but = uiDefButR(block, NUM, B_REDR, "Y", 0, 0, UI_UNIT_X, UI_UNIT_Y,
			                &bezt_ptr, "handle_right", 1, 0, 0, -1, -1, NULL);
			uiButSetFunc(but, graphedit_activekey_handles_cb, fcu, bezt);
			uiButSetUnitType(but, unit);
		}
	}
	else {
		if ((fcu->bezt == NULL) && (fcu->modifiers.first)) {
			/* modifiers only - so no keyframes to be active */
			uiItemL(layout, IFACE_("F-Curve only has F-Modifiers"), ICON_NONE);
			uiItemL(layout, IFACE_("See Modifiers panel below"), ICON_INFO);
		}
		else if (fcu->fpt) {
			/* samples only */
			uiItemL(layout, IFACE_("F-Curve doesn't have any keyframes as it only contains sampled points"),
			        ICON_NONE);
		}
		else
			uiItemL(layout, IFACE_("No active keyframe on F-Curve"), ICON_NONE);
	}
	
//.........这里部分代码省略.........

static char *rna_ColorRampElement_path(PointerRNA *ptr)
{
	PointerRNA ramp_ptr;
	PropertyRNA *prop;
	char *path = NULL;
	int index;
	
	/* helper macro for use here to try and get the path
	 *	- this calls the standard code for getting a path to a texture...
	 */

#define COLRAMP_GETPATH                                                       \
{                                                                             \
	prop = RNA_struct_find_property(&ramp_ptr, "elements");                   \
	if (prop) {                                                               \
		index = RNA_property_collection_lookup_index(&ramp_ptr, prop, ptr);   \
		if (index != -1) {                                                    \
			char *texture_path = rna_ColorRamp_path(&ramp_ptr);               \
			path = BLI_sprintfN("%s.elements[%d]", texture_path, index);      \
			MEM_freeN(texture_path);                                          \
		}                                                                     \
	}                                                                         \
} (void)0

	/* determine the path from the ID-block to the ramp */
	/* FIXME: this is a very slow way to do it, but it will have to suffice... */
	if (ptr->id.data) {
		ID *id = ptr->id.data;
		
		switch (GS(id->name)) {
			case ID_MA: /* 2 cases for material - diffuse and spec */
			{
				Material *ma = (Material *)id;
				
				/* try diffuse first */
				if (ma->ramp_col) {
					RNA_pointer_create(id, &RNA_ColorRamp, ma->ramp_col, &ramp_ptr);
					COLRAMP_GETPATH;
				}
				/* try specular if not diffuse */
				if (!path && ma->ramp_spec) {
					RNA_pointer_create(id, &RNA_ColorRamp, ma->ramp_