X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=laserbrain_demo;a=blobdiff_plain;f=src%2Fmetascene.cc;h=c46742032d555b25f150da4eaec4d0aa77fadb6e;hp=d9f96fbaaf38b3d4bac9d3086e60066fca587f76;hb=0d27f859021b4af5dbb5404ef5af012546abf335;hpb=fc00873a180b1b7272d94a32dcc40d0d44ed2b72

diff --git a/src/metascene.cc b/src/metascene.cc
index d9f96fb..c467420 100644
--- a/src/metascene.cc
+++ b/src/metascene.cc
@@ -13,6 +13,7 @@
 #include <regex>
 #include "metascene.h"
 #include "scene.h"
+#include "objmesh.h"
 #include "treestore.h"
 #include "logger.h"
 #include "app.h"
@@ -24,12 +25,28 @@
 #include <alloca.h>
 #endif
 
-struct MaterialEdit {
-	std::regex name_re;
+enum MaterialEditType {
+	MTL_EDIT_TEXTURE,
+	MTL_EDIT_MIRROR
+};
+
+struct MaterialEditTexture {
 	int attr;
 	Texture *tex;
 };
 
+struct MaterialEditMirror {
+	float reflectivity;
+};
+
+struct MaterialEdit {
+	std::regex name_re;
+	MaterialEditType type;
+
+	MaterialEditTexture tex;
+	MaterialEditMirror mirror;
+};
+
 static bool proc_node(MetaScene *mscn, struct ts_node *node);
 static bool proc_scenefile(MetaScene *mscn, struct ts_node *node);
 static bool proc_mtledit(MetaScene *mscn, MaterialEdit *med, struct ts_node *node);
@@ -45,12 +62,19 @@ MetaScene::MetaScene()
 {
 	walk_mesh = 0;
 	music = 0;
+	mirrors = 0;
 }
 
 MetaScene::~MetaScene()
 {
 	delete walk_mesh;
 	delete music;
+
+	while(mirrors) {
+		FlatMirror *m = mirrors;
+		mirrors = mirrors->next;
+		delete m;
+	}
 }
 
 bool MetaScene::load(const char *fname)
@@ -118,6 +142,7 @@ void MetaScene::update(float dt)
 // XXX not used, renderer draws
 void MetaScene::draw() const
 {
+	error_log("Don't call MetaScene::draw, use the Renderer\n");
 	int nscn = scenes.size();
 	for(int i=0; i<nscn; i++) {
 		scenes[i]->draw();
@@ -175,6 +200,66 @@ Scene *MetaScene::extract_nodes(const char *qstr)
 	return scn;
 }
 
+int MetaScene::calc_mirror_planes()
+{
+	int num_mirrors = 0;
+	while(mirrors) {
+		FlatMirror *m = mirrors;
+		mirrors = mirrors->next;
+		delete m;
+	}
+	mirrors = 0;
+	objmirror.clear();
+
+	int numscn = scenes.size();
+	for(int i=0; i<numscn; i++) {
+		Scene *scn = scenes[i];
+
+		int numobj = scn->objects.size();
+		for(int j=0; j<numobj; j++) {
+			Object *obj = scn->objects[j];
+
+			if(obj->mtl.flat_mirror && obj->get_type() == OBJ_MESH) {
+				const Mesh *mesh = ((ObjMesh*)obj)->mesh;
+				if(!mesh) continue;
+
+				// assume the object is actually flat, so grab the first triangle and make a plane
+				Triangle face = Triangle(0, (const Vec3*)mesh->get_attrib_data(MESH_ATTR_VERTEX),
+						mesh->get_index_data());
+				face.calc_normal();
+
+				FlatMirror *mir = new FlatMirror;
+				mir->plane.pt = face.v[0];
+				mir->plane.normal = face.normal;
+				mir->reflect = obj->mtl.reflect;
+
+				// check to see if we have found this mirror plane already
+				bool found = false;
+				FlatMirror *node = mirrors;
+				while(node) {
+					if(fabs(dot(mir->plane.normal, node->plane.normal)) < 1e-4 &&
+							fabs(dot(mir->plane.normal, normalize(mir->plane.pt - node->plane.pt))) < 1e-4) {
+						found = true;
+						break;
+					}
+				}
+
+				if(!found) {
+					mir->next = mirrors;
+					mirrors = mir;
+
+					objmirror[obj] = mir;	// associate with object
+					++num_mirrors;
+				} else {
+					delete mir;
+				}
+			}
+		}
+	}
+
+	return num_mirrors;
+}
+
 static bool proc_node(MetaScene *mscn, struct ts_node *node)
 {
 	struct ts_node *c = node->child_list;
@@ -365,7 +450,6 @@ static bool proc_mtledit(MetaScene *mscn, MaterialEdit *med, struct ts_node *nod
 	if(amtl && amtl->val.type == TS_STRING) {
 		restr = amtl->val.str;
 	}
-
 	med->name_re = std::regex(restr);
 
 	node = node->child_list;
@@ -394,16 +478,37 @@ static bool proc_mtledit(MetaScene *mscn, MaterialEdit *med, struct ts_node *nod
 				}
 			}
 
-			med->attr = textype;
+			med->tex.attr = textype;
 
 			if(!afile || !afile->val.str || !*afile->val.str) {
 				// remove
-				med->tex = 0;
+				med->tex.tex = 0;
 			} else {
-				med->tex = texman.get_texture(afile->val.str, TEX_2D, &mscn->datamap);
+				med->tex.tex = texman.get_texture(afile->val.str, TEX_2D, &mscn->datamap);
+			}
+
+			med->type = MTL_EDIT_TEXTURE;
+			break;
+		}
+
+		if(strcmp(cn->name, "mirror") == 0) {
+			// make this object a flat mirror (hopefully the object is flat otherwise this won't work)
+			float refl = 1.0f;
+
+			struct ts_attr *arefl = ts_get_attr(cn, "reflect");
+			if(arefl) {
+				if(arefl->val.type == TS_NUMBER) {
+					refl = arefl->val.fnum;
+				} else {
+					error_log("invalid reflect attribute in mirror mtledit: %s\n", arefl->val.str);
+					continue;
+				}
 			}
+
+			med->type = MTL_EDIT_MIRROR;
+			med->mirror.reflectivity = refl;
+			break;
 		}
-		// TODO add more edit modes
 	}
 
 	return true;
@@ -455,13 +560,22 @@ static bool proc_music(MetaScene *mscn, struct ts_node *node)
 static void apply_mtledit(Material *mtl, const MaterialEdit &med)
 {
 	// TODO more edit modes...
-	if(med.tex) {
-		mtl->add_texture(med.tex, med.attr);
-	} else {
-		Texture *tex = mtl->stdtex[med.attr];
-		if(tex) {
-			mtl->remove_texture(tex);
+	switch(med.type) {
+	case MTL_EDIT_TEXTURE:
+		if(med.tex.tex) {
+			mtl->add_texture(med.tex.tex, med.tex.attr);
+		} else {
+			Texture *tex = mtl->stdtex[med.tex.attr];
+			if(tex) {
+				mtl->remove_texture(tex);
+			}
 		}
+		break;
+
+	case MTL_EDIT_MIRROR:
+		mtl->flat_mirror = med.mirror.reflectivity > 1e-6;
+		mtl->reflect = med.mirror.reflectivity;
+		break;
 	}
 }