exhibit manager progress

diff --git a/src/app.cc b/src/app.cc
index 1cf21bd..bc3f13c 100644 (file)
--- a/src/app.cc
+++ b/src/app.cc
@@ -14,6 +14,7 @@
 #include "opt.h"
 #include "post.h"
 #include "renderer.h"
+#include "exman.h"
 #include "blob_exhibit.h"
 
 #define NEAR_CLIP      5.0
@@ -61,6 +62,7 @@ static unsigned int sdr_post_gamma;
 
 static long prev_msec;
 
+static ExhibitManager *exman;
 static BlobExhibit *blobs;
 static bool show_blobs;
 
@@ -119,6 +121,8 @@ bool app_init(int argc, char **argv)
        dir.y = 0;
        cam_theta = rad_to_deg(acos(dot(dir, Vec3(0, 0, 1))));
 
+       exman = new ExhibitManager;
+
        blobs = new BlobExhibit;
        blobs->node = new SceneNode;
        blobs->init();
@@ -126,6 +130,8 @@ bool app_init(int argc, char **argv)
        blobs->node->set_scaling(Vec3(28, 28, 28));
        blobs->node->update(0);
 
+       exman->add(blobs);
+
        if(!(sdr_ltmap_notex = create_program_load("sdr/lightmap.v.glsl", "sdr/lightmap-notex.p.glsl"))) {
                return false;
        }
@@ -162,9 +168,7 @@ void app_cleanup()
 
        delete rend;
 
-       blobs->destroy();
-       delete blobs->node;
-       delete blobs;
+       delete exman;
 
        texman.clear();
        sceneman.clear();
@@ -194,9 +198,7 @@ static void update(float dt)
        sceneman.update();
 
        mscn->update(dt);
-       if(show_blobs) {
-               blobs->update(dt);
-       }
+       exman->update(dt);
 
        float speed = walk_speed * dt;
        Vec3 dir;

diff --git a/src/blob_exhibit.cc b/src/blob_exhibit.cc
index 0378359..5e9f213 100644 (file)
--- a/src/blob_exhibit.cc
+++ b/src/blob_exhibit.cc
@@ -41,6 +41,7 @@ BlobExhibit::BlobExhibit()
 
 BlobExhibit::~BlobExhibit()
 {
+       destroy();
        delete priv;
 }
 
@@ -62,8 +63,10 @@ bool BlobExhibit::init()
 
 void BlobExhibit::destroy()
 {
-       msurf_free(priv->msurf);
-       priv->msurf = 0;
+       if(priv->msurf) {
+               msurf_free(priv->msurf);
+               priv->msurf = 0;
+       }
 }
 
 void BlobExhibit::update(float dt)

diff --git a/src/exhibit.cc b/src/exhibit.cc
index e98a2ba..d76b291 100644 (file)
--- a/src/exhibit.cc
+++ b/src/exhibit.cc
@@ -1,11 +1,14 @@
 #include "exhibit.h"
 #include "snode.h"
+#include "scene.h"
 
 class ExhibitPriv {
 public:
        Vec3 orig_pos;
        Quat orig_rot;
        SceneNode *orig_node;
+
+       ExhibitPriv();
 };
 
 ExSelection::ExSelection(Exhibit *ex)
@@ -20,10 +23,14 @@ ExSelection::operator bool() const
        return ex != 0;
 }
 
+ExhibitPriv::ExhibitPriv()
+{
+       orig_node = 0;
+}
+
 Exhibit::Exhibit()
 {
        priv = new ExhibitPriv;
-       priv->orig_node = 0;
 }
 
 Exhibit::~Exhibit()
@@ -31,6 +38,13 @@ Exhibit::~Exhibit()
        delete priv;
 }
 
+void Exhibit::set_node(SceneNode *node)
+{
+       this->node = priv->orig_node = node;
+       priv->orig_pos = node->get_position();
+       priv->orig_rot = node->get_rotation();
+}
+
 ExSelection Exhibit::select(const Ray &ray) const
 {
        return ExSelection(0);

diff --git a/src/exhibit.h b/src/exhibit.h
index 004626c..63b2898 100644 (file)
--- a/src/exhibit.h
+++ b/src/exhibit.h
@@ -7,6 +7,7 @@
 
 class Exhibit;
 class ExhibitPriv;
+class Scene;
 
 enum {
        EXSEL_RAY = 1,
@@ -43,6 +44,8 @@ public:
        Exhibit(const Exhibit&) = delete;
        Exhibit &operator =(const Exhibit &) = delete;
 
+       virtual void set_node(SceneNode *node);
+
        virtual ExSelection select(const Ray &ray) const;
        virtual ExSelection select(const Sphere &sph) const;
 

diff --git a/src/exman.cc b/src/exman.cc
index e0a12bb..d93c2ff 100644 (file)
--- a/src/exman.cc
+++ b/src/exman.cc
@@ -1,3 +1,4 @@
+#include <algorithm>
 #include "exman.h"
 #include "exhibit.h"
 #include "blob_exhibit.h"
@@ -18,7 +19,25 @@ ExhibitManager::~ExhibitManager()
        items.clear();
 }
 
-bool ExhibitManager::load(const MetaScene *mscn, const char *fname)
+void ExhibitManager::add(Exhibit *ex)
+{
+       std::vector<Exhibit*>::iterator it = std::find(items.begin(), items.end(), ex);
+       if(it == items.end()) {
+               items.push_back(ex);
+       }
+}
+
+bool ExhibitManager::remove(Exhibit *ex)
+{
+       std::vector<Exhibit*>::iterator it = std::find(items.begin(), items.end(), ex);
+       if(it != items.end()) {
+               items.erase(it);
+               return true;
+       }
+       return false;
+}
+
+bool ExhibitManager::load(MetaScene *mscn, const char *fname)
 {
        struct ts_node *root = ts_load(fname);
        if(!root || strcmp(root->name, "exhibits") != 0) {
@@ -27,10 +46,43 @@ bool ExhibitManager::load(const MetaScene *mscn, const char *fname)
                return false;
        }
 
+       struct ts_node *iter = root->child_list;
+       while(iter) {
+               struct ts_node *node = iter;
+               iter = iter->next;
+
+               if(strcmp(node->name, "item") == 0) {
+                       SceneNode *snode;
+
+                       const char *amatch = ts_get_attr_str(node, "match_node");
+                       if(!amatch || !(snode = mscn->match_node(amatch))) {
+                               error_log("regexp \"%s\" didn't match any nodes\n", amatch ? amatch : "");
+                               continue;
+                       }
+
+                       Exhibit *ex;
+                       const char *atype = ts_get_attr_str(node, "type");
+                       if(!atype || !(ex = create_exhibit(atype))) {
+                               error_log("failed to create exhibit of type: %s\n", atype);
+                               continue;
+                       }
+
+                       ex->set_node(snode);
+                       items.push_back(ex);
+               }
+       }
+
        ts_free_tree(root);
        return true;
 }
 
+void ExhibitManager::update(float dt)
+{
+       int num = items.size();
+       for(int i=0; i<num; i++) {
+               items[i]->update(dt);
+       }
+}
 
 static Exhibit *create_exhibit(const char *type)
 {
@@ -39,5 +91,6 @@ static Exhibit *create_exhibit(const char *type)
        } else if(strcmp(type, "blobs") == 0) {
                return new BlobExhibit;
        }
+       error_log("unknown exhibit type: %s\n", type);
        return 0;
 }

diff --git a/src/exman.h b/src/exman.h
index 5c627e6..d91e374 100644 (file)
--- a/src/exman.h
+++ b/src/exman.h
@@ -13,10 +13,15 @@ public:
        ExhibitManager();
        ~ExhibitManager();
 
-       bool load(const MetaScene *mscn, const char *fname);
+       void add(Exhibit *ex);
+       bool remove(Exhibit *ex);
+
+       bool load(MetaScene *mscn, const char *fname);
 
        ExSelection select(const Ray &ray) const;
        ExSelection select(const Sphere &sph) const;
+
+       void update(float dt = 0.0f);
 };
 
 #endif // EXMAN_H_

diff --git a/src/metascene.cc b/src/metascene.cc
index 6059664..985ac1c 100644 (file)
--- a/src/metascene.cc
+++ b/src/metascene.cc
@@ -75,6 +75,57 @@ void MetaScene::draw() const
        }
 }
 
+SceneNode *MetaScene::find_node(const char *name) const
+{
+       int num = scenes.size();
+       for(int i=0; i<num; i++) {
+               SceneNode *n = scenes[i]->find_node(name);
+               if(n) return n;
+       }
+       return 0;
+}
+
+SceneNode *MetaScene::match_node(const char *qstr) const
+{
+       int num = scenes.size();
+       for(int i=0; i<num; i++) {
+               SceneNode *n = scenes[i]->match_node(qstr);
+               if(n) return n;
+       }
+       return 0;
+}
+
+std::list<SceneNode*> MetaScene::match_nodes(const char *qstr) const
+{
+       std::list<SceneNode*> res;
+       int num = scenes.size();
+       for(int i=0; i<num; i++) {
+               std::list<SceneNode*> tmp = scenes[i]->match_nodes(qstr);
+               if(!tmp.empty()) {
+                       res.splice(res.end(), tmp);
+               }
+       }
+       return std::move(res);
+}
+
+Scene *MetaScene::extract_nodes(const char *qstr)
+{
+       Scene *scn = 0;
+       int nscn = scenes.size();
+       for(int i=0; i<nscn; i++) {
+               Scene *tmp = scenes[i]->extract_nodes(qstr);
+               if(tmp) {
+                       if(!scn) {
+                               scn = tmp;
+                       } else {
+                               scn->merge(tmp);
+                               delete tmp;
+                       }
+               }
+       }
+       return scn;
+}
+
 static bool proc_node(MetaScene *mscn, struct ts_node *node)
 {
        struct ts_node *c = node->child_list;

diff --git a/src/metascene.h b/src/metascene.h
index 8d0f5c2..9ac9092 100644 (file)
--- a/src/metascene.h
+++ b/src/metascene.h
@@ -27,6 +27,15 @@ public:
 
        void update(float dt);
        void draw() const;
+
+       /* helper functions which end up calling the corresponding Scene functions
+        * for every scene
+        */
+       SceneNode *find_node(const char *name) const;
+       SceneNode *match_node(const char *qstr) const;
+       std::list<SceneNode*> match_nodes(const char *qstr) const;
+
+       Scene *extract_nodes(const char *qstr);
 };
 
 #endif // METASCENE_H_

diff --git a/src/scene.cc b/src/scene.cc
index 35b562d..484310f 100644 (file)
--- a/src/scene.cc
+++ b/src/scene.cc
@@ -182,6 +182,35 @@ bool Scene::have_node(SceneNode *n) const
        return n->scene == this;
 }
 
+/* traverse scene graph and find node by name */
+static SceneNode *find_node_rec(SceneNode *tree, const char *name)
+{
+       if(strcmp(tree->get_name(), name) == 0) {
+               return tree;
+       }
+
+       int num = tree->get_num_children();
+       for(int i=0; i<num; i++) {
+               SceneNode *n = find_node_rec(tree->get_child(i), name);
+               if(n) return n;
+       }
+       return 0;
+}
+
+static SceneNode *find_node_rec(SceneNode *tree, const std::regex &re)
+{
+       if(std::regex_match(tree->get_name(), re)) {
+               return tree;
+       }
+
+       int num = tree->get_num_children();
+       for(int i=0; i<num; i++) {
+               SceneNode *n = find_node_rec(tree, re);
+               if(n) return n;
+       }
+       return 0;
+}
+
 static void find_nodes_rec(std::list<SceneNode*> *res, SceneNode *tree, const std::regex &re)
 {
        if(std::regex_match(tree->get_name(), re)) {
@@ -194,6 +223,30 @@ static void find_nodes_rec(std::list<SceneNode*> *res, SceneNode *tree, const st
        }
 }
 
+SceneNode *Scene::find_node(const char *name) const
+{
+       if(!nodes) return 0;
+       return find_node_rec(nodes, name);
+}
+
+SceneNode *Scene::match_node(const char *qstr) const
+{
+       if(!nodes) return 0;
+
+       std::regex re{qstr};
+       return find_node_rec(nodes, re);
+}
+
+std::list<SceneNode*> Scene::match_nodes(const char *qstr) const
+{
+       std::list<SceneNode*> res;
+       if(nodes) {
+               std::regex re{qstr};
+               find_nodes_rec(&res, nodes, re);
+       }
+       return std::move(res);
+}
+
 Scene *Scene::extract_nodes(const char *qstr)
 {
        if(!nodes) return 0;

diff --git a/src/scene.h b/src/scene.h
index f295bbc..bd01dec 100644 (file)
--- a/src/scene.h
+++ b/src/scene.h
@@ -60,6 +60,13 @@ public:
        bool remove_node(SceneNode *n);
        bool have_node(SceneNode *n) const;
 
+       // find node by name
+       SceneNode *find_node(const char *name) const;
+       // match nodes with regexp and return the first that matches
+       SceneNode *match_node(const char *qstr) const;
+       // match nodes with regexp and return a list of matches
+       std::list<SceneNode*> match_nodes(const char *qstr) const;
+
        /* find and remove all nodes whose names match the regexp
         * XXX at the moment this has the effect of flattening the hierarchy in the
         * result scene. If we ever need verbatim extraction of whole subtrees we'll