C++ BLI_findlink函數代碼示例

void RenderLayersBaseProg::initExecution()
{
	Scene *scene = this->getScene();
	Render *re = (scene) ? RE_GetRender(scene->id.name) : NULL;
	RenderResult *rr = NULL;
	
	if (re)
		rr = RE_AcquireResultRead(re);
	
	if (rr) {
		SceneRenderLayer *srl = (SceneRenderLayer *)BLI_findlink(&scene->r.layers, getLayerId());
		if (srl) {

			RenderLayer *rl = RE_GetRenderLayer(rr, srl->name);
			if (rl && rl->rectf) {
				this->m_inputBuffer = RE_RenderLayerGetPass(rl, this->m_renderpass);

				if (this->m_inputBuffer == NULL && this->m_renderpass == SCE_PASS_COMBINED) {
					this->m_inputBuffer = rl->rectf;
				}
			}
		}
	}
	if (re) {
		RE_ReleaseResult(re);
		re = NULL;
	}
}

static int add_empty_ks_path_exec (bContext *C, wmOperator *op)
{
	Scene *scene= CTX_data_scene(C);
	KeyingSet *ks;
	KS_Path *ksp;
	
	/* verify the Keying Set to use:
	 *	- use the active one
	 *	- return error if it doesn't exist
	 */
	if (scene->active_keyingset == 0) {
		BKE_report(op->reports, RPT_ERROR, "No active Keying Set to add empty path to");
		return OPERATOR_CANCELLED;
	}
	else
		ks= BLI_findlink(&scene->keyingsets, scene->active_keyingset-1);
	
	/* don't use the API method for this, since that checks on values... */
	ksp= MEM_callocN(sizeof(KS_Path), "KeyingSetPath Empty");
	BLI_addtail(&ks->paths, ksp);
	ks->active_path= BLI_countlist(&ks->paths);
	
	ksp->groupmode= KSP_GROUP_KSNAME; // XXX?
	
	return OPERATOR_FINISHED;
}

/* Get the active Keying Set for the Scene provided */
KeyingSet *ANIM_scene_get_active_keyingset (Scene *scene)
{
	/* if no scene, we've got no hope of finding the Keying Set */
	if (scene == NULL)
		return NULL;
	
	/* currently, there are several possibilities here:
	 *	-   0: no active keying set
	 *	- > 0: one of the user-defined Keying Sets, but indices start from 0 (hence the -1)
	 *	- < 0: a builtin keying set
	 */
	if (scene->active_keyingset > 0)
		return BLI_findlink(&scene->keyingsets, scene->active_keyingset-1);
	else
		return BLI_findlink(&builtin_keyingsets, (-scene->active_keyingset)-1);
}

/* note, must be freed */
int *defgroup_flip_map_single(Object *ob, int *flip_map_len, const bool use_default, int defgroup)
{
	int defbase_tot = *flip_map_len = BLI_countlist(&ob->defbase);

	if (defbase_tot == 0) {
		return NULL;
	}
	else {
		bDeformGroup *dg;
		char name_flip[sizeof(dg->name)];
		int i, flip_num, *map = MEM_mallocN(defbase_tot * sizeof(int), __func__);

		for (i = 0; i < defbase_tot; i++) {
			map[i] = use_default ? i : -1;
		}

		dg = BLI_findlink(&ob->defbase, defgroup);

		BKE_deform_flip_side_name(name_flip, dg->name, false);
		if (!STREQ(name_flip, dg->name)) {
			flip_num = defgroup_name_index(ob, name_flip);

			if (flip_num != -1) {
				map[defgroup] = flip_num;
				map[flip_num] = defgroup;
			}
		}

		return map;
	}
}

static bool isDisabled(ModifierData *md, int useRenderParams)
{
	ParticleInstanceModifierData *pimd = (ParticleInstanceModifierData *)md;
	ParticleSystem *psys;
	ModifierData *ob_md;
	
	if (!pimd->ob)
		return true;
	
	psys = BLI_findlink(&pimd->ob->particlesystem, pimd->psys - 1);
	if (psys == NULL)
		return true;
	
	/* If the psys modifier is disabled we cannot use its data.
	 * First look up the psys modifier from the object, then check if it is enabled.
	 */
	for (ob_md = pimd->ob->modifiers.first; ob_md; ob_md = ob_md->next) {
		if (ob_md->type == eModifierType_ParticleSystem) {
			ParticleSystemModifierData *psmd = (ParticleSystemModifierData *)ob_md;
			if (psmd->psys == psys) {
				int required_mode;
				
				if (useRenderParams) required_mode = eModifierMode_Render;
				else required_mode = eModifierMode_Realtime;
				
				if (!modifier_isEnabled(md->scene, ob_md, required_mode))
					return true;
				
				break;
			}
		}
	}
	
	return false;
}

static int mask_layer_move_exec(bContext *C, wmOperator *op)
{
	Mask *mask = CTX_data_edit_mask(C);
	MaskLayer *mask_layer = BLI_findlink(&mask->masklayers, mask->masklay_act);
	MaskLayer *mask_layer_other;
	int direction = RNA_enum_get(op->ptr, "direction");

	if (!mask_layer)
		return OPERATOR_CANCELLED;

	if (direction == -1) {
		mask_layer_other = mask_layer->prev;

		if (!mask_layer_other)
			return OPERATOR_CANCELLED;

		BLI_remlink(&mask->masklayers, mask_layer);
		BLI_insertlinkbefore(&mask->masklayers, mask_layer_other, mask_layer);
		mask->masklay_act--;
	}
	else if (direction == 1) {
		mask_layer_other = mask_layer->next;

		if (!mask_layer_other)
			return OPERATOR_CANCELLED;

		BLI_remlink(&mask->masklayers, mask_layer);
		BLI_insertlinkafter(&mask->masklayers, mask_layer_other, mask_layer);
		mask->masklay_act++;
	}

	return OPERATOR_FINISHED;
}

static void wm_method_draw_stereo3d_anaglyph(wmWindow *win)
{
	wmDrawData *drawdata;
	int view, bit;

	for (view = 0; view < 2; view ++) {
		drawdata = BLI_findlink(&win->drawdata, (view * 2) + 1);

		bit = view + 1;
		switch (win->stereo3d_format->anaglyph_type) {
			case S3D_ANAGLYPH_REDCYAN:
				glColorMask((1&bit) ? GL_TRUE : GL_FALSE,
				            (2&bit) ? GL_TRUE : GL_FALSE,
				            (2&bit) ? GL_TRUE : GL_FALSE,
				            GL_FALSE);
				break;
			case S3D_ANAGLYPH_GREENMAGENTA:
				glColorMask((2&bit) ? GL_TRUE : GL_FALSE,
				            (1&bit) ? GL_TRUE : GL_FALSE,
				            (2&bit) ? GL_TRUE : GL_FALSE,
				            GL_FALSE);
				break;
			case S3D_ANAGLYPH_YELLOWBLUE:
				glColorMask((1&bit) ? GL_TRUE : GL_FALSE,
				            (1&bit) ? GL_TRUE : GL_FALSE,
				            (2&bit) ? GL_TRUE : GL_FALSE,
				            GL_FALSE);
				break;
		}

		wm_triple_draw_textures(win, drawdata->triple, 1.0f);

		glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
	}
}

/* note, must be freed */
int *defgroup_flip_map_single(Object *ob, int *flip_map_len, int use_default, int defgroup)
{
	int defbase_tot= *flip_map_len= BLI_countlist(&ob->defbase);

	if (defbase_tot==0) {
		return NULL;
	}
	else {
		bDeformGroup *dg;
		char name[sizeof(dg->name)];
		int i, flip_num, *map= MEM_mallocN(defbase_tot * sizeof(int), __func__);

		for (i=0; i < defbase_tot; i++) {
			if (use_default) map[i]= i;
			else             map[i]= -1;
		}

		dg= BLI_findlink(&ob->defbase, defgroup);

		flip_side_name(name, dg->name, FALSE);
		if (strcmp(name, dg->name)) {
			flip_num= defgroup_name_index(ob, name);

			if (flip_num >= 0) {
				map[defgroup]= flip_num;
				map[flip_num]= defgroup;
			}
		}

		return map;
	}
}

static void do_node_add_group(bContext *C, void *UNUSED(arg), int event)
{
	SpaceNode *snode = CTX_wm_space_node(C);
	Main *bmain = CTX_data_main(C);
	Scene *scene = CTX_data_scene(C);
	bNodeTemplate ntemp;
	
	if (event >= 0) {
		ntemp.ngroup = BLI_findlink(&G.main->nodetree, event);
		ntemp.type = ntemp.ngroup->nodetype;
	}
	else {
		ntemp.type = -event;
		switch (ntemp.type) {
			case NODE_GROUP:
				ntemp.ngroup = ntreeAddTree("Group", snode->treetype, ntemp.type);
				break;
			default:
				ntemp.ngroup = NULL;
		}
	}
	if (!ntemp.ngroup)
		return;
	
	ntemp.main = bmain;
	ntemp.scene = scene;
	
	do_node_add(C, &ntemp);
}

/**
 * Takes a cursor (row, character) and returns x,y pixel coords.
 */
bool ED_text_region_location_from_cursor(SpaceText *st, ARegion *ar, const int cursor_co[2], int r_pixel_co[2])
{
	TextLine *line = NULL;

	if (!st->text) {
		goto error;
	}

	line = BLI_findlink(&st->text->lines, cursor_co[0]);
	if (!line || (cursor_co[1] < 0) || (cursor_co[1] > line->len)) {
		goto error;
	}
	else {
		int offl, offc;
		int linenr_offset = st->showlinenrs ? TXT_OFFSET + TEXTXLOC : TXT_OFFSET;
		/* handle tabs as well! */
		int char_pos = text_get_char_pos(st, line->line, cursor_co[1]);

		wrap_offset(st, ar, line, cursor_co[1], &offl, &offc);
		r_pixel_co[0] = (char_pos + offc - st->left) * st->cwidth + linenr_offset;
		r_pixel_co[1] = (cursor_co[0] + offl - st->top) * (st->lheight_dpi + TXT_LINE_SPACING);
		r_pixel_co[1] = (ar->winy - (r_pixel_co[1] + TXT_OFFSET)) - st->lheight_dpi;
	}
	return true;


error:
	r_pixel_co[0] = r_pixel_co[1] = -1;
	return false;
}

/* returns the active pose for a poselib */
static TimeMarker *poselib_get_active_pose(bAction *act)
{	
	if ((act) && (act->active_marker))
		return BLI_findlink(&act->markers, act->active_marker - 1);
	else
		return NULL;
}

static void do_node_add_group(bContext *C, void *UNUSED(arg), int event)
{
	SpaceNode *snode= CTX_wm_space_node(C);
	bNodeTemplate ntemp;
	
	if (event>=0) {
		ntemp.ngroup= BLI_findlink(&G.main->nodetree, event);
		ntemp.type = ntemp.ngroup->nodetype;
	}
	else {
		ntemp.type = -event;
		switch (ntemp.type) {
		case NODE_GROUP:
			ntemp.ngroup = ntreeAddTree("Group", snode->treetype, ntemp.type);
			break;
		case NODE_FORLOOP:
			ntemp.ngroup = ntreeAddTree("For Loop", snode->treetype, ntemp.type);
			break;
		case NODE_WHILELOOP:
			ntemp.ngroup = ntreeAddTree("While Loop", snode->treetype, ntemp.type);
			break;
		default:
			ntemp.ngroup = NULL;
		}
	}
	if (!ntemp.ngroup)
		return;
	
	do_node_add(C, &ntemp);
}

static int poselib_remove_exec(bContext *C, wmOperator *op)
{
	Object *ob = get_poselib_object(C);
	bAction *act = (ob) ? ob->poselib : NULL;
	TimeMarker *marker;
	int marker_index;
	FCurve *fcu;
	PropertyRNA *prop;

	/* check if valid poselib */
	if (act == NULL) {
		BKE_report(op->reports, RPT_ERROR, "Object does not have pose lib data");
		return OPERATOR_CANCELLED;
	}

	prop = RNA_struct_find_property(op->ptr, "pose");
	if (RNA_property_is_set(op->ptr, prop)) {
		marker_index = RNA_property_enum_get(op->ptr, prop);
	}
	else {
		marker_index = act->active_marker - 1;
	}

	/* get index (and pointer) of pose to remove */
	marker = BLI_findlink(&act->markers, marker_index);
	if (marker == NULL) {
		BKE_reportf(op->reports, RPT_ERROR, "Invalid pose specified %d", marker_index);
		return OPERATOR_CANCELLED;
	}
	
	/* remove relevant keyframes */
	for (fcu = act->curves.first; fcu; fcu = fcu->next) {
		BezTriple *bezt;
		unsigned int i;
		
		if (fcu->bezt) {
			for (i = 0, bezt = fcu->bezt; i < fcu->totvert; i++, bezt++) {
				/* check if remove */
				if (IS_EQF(bezt->vec[1][0], (float)marker->frame)) {
					delete_fcurve_key(fcu, i, 1);
					break;
				}
			}
		}
	}
	
	/* remove poselib from list */
	BLI_freelinkN(&act->markers, marker);
	
	/* fix active pose number */
	act->active_marker = 0;
	
	/* send notifiers for this - using keyframe editing notifiers, since action 
	 * may be being shown in anim editors as active action 
	 */
	WM_event_add_notifier(C, NC_ANIMATION | ND_KEYFRAME | NA_EDITED, NULL);
	
	/* done */
	return OPERATOR_FINISHED;
}

static void rna_Mesh_assign_verts_to_group(Object *ob, bDeformGroup *group, int *indices, int totindex,
                                           float weight, int assignmode)
{
	if (ob->type != OB_MESH) {
		BKE_report(reports, RPT_ERROR, "Object should be of mesh type");
		return;
	}

	Mesh *me = (Mesh *)ob->data;
	int group_index = BLI_findlink(&ob->defbase, group);
	if (group_index == -1) {
		BKE_report(reports, RPT_ERROR, "No vertex groups assigned to mesh");
		return;
	}

	if (assignmode != WEIGHT_REPLACE && assignmode != WEIGHT_ADD && assignmode != WEIGHT_SUBTRACT) {
		BKE_report(reports, RPT_ERROR, "Bad assignment mode");
		return;
	}

	/* makes a set of dVerts corresponding to the mVerts */
	if (!me->dvert)
		create_dverts(&me->id);

	/* loop list adding verts to group  */
	for (i = 0; i < totindex; i++) {
		if (i < 0 || i >= me->totvert) {
			BKE_report(reports, RPT_ERROR, "Bad vertex index in list");
			return;
		}

		add_vert_defnr(ob, group_index, i, weight, assignmode);
	}
}

static int poselib_rename_invoke(bContext *C, wmOperator *op, const wmEvent *event)
{
	Object *ob = get_poselib_object(C);
	bAction *act = (ob) ? ob->poselib : NULL;
	TimeMarker *marker;
	
	/* check if valid poselib */
	if (act == NULL) {
		BKE_report(op->reports, RPT_ERROR, "Object does not have pose lib data");
		return OPERATOR_CANCELLED;
	}
	
	/* get index (and pointer) of pose to remove */
	marker = BLI_findlink(&act->markers, act->active_marker - 1);
	if (marker == NULL) {
		BKE_report(op->reports, RPT_ERROR, "Invalid index for pose");
		return OPERATOR_CANCELLED;
	}
	else {
		/* use the existing name of the marker as the name, and use the active marker as the one to rename */
		RNA_enum_set(op->ptr, "pose", act->active_marker - 1);
		RNA_string_set(op->ptr, "name", marker->name);
	}
	
	/* part to sync with other similar operators... */
	return WM_operator_props_popup_confirm(C, op, event);
}