X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=laserbrain_demo;a=blobdiff_plain;f=src%2Fmetascene.cc;h=6805fae2038a078327abf00c623cfc82585405cd;hp=9c882495c25d282d163b9f3d5fd571c3c60e2ee1;hb=844f36f03073c5db86a8acd2cf7cd1a89e1a16b9;hpb=d47a663825bd358d2165c1a4b040cc828aeb4991

diff --git a/src/metascene.cc b/src/metascene.cc
index 9c88249..6805fae 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"
@@ -36,6 +37,7 @@ struct MaterialEditTexture {
 
 struct MaterialEditMirror {
 	float reflectivity;
+	int plane;
 };
 
 struct MaterialEdit {
@@ -61,12 +63,19 @@ 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)
@@ -134,6 +143,7 @@ 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();
@@ -191,6 +201,87 @@ Scene *MetaScene::extract_nodes(const char *qstr)
 	return scn;
 }
 
+int MetaScene::calc_mirror_planes()
+{
+	std::vector<Vec4> world_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;
+
+				FlatMirror *mir = new FlatMirror;
+				mir->reflect = obj->mtl.reflect;
+				mir->node = obj->node;
+
+				if(obj->mtl.flat_mirror == MTL_MIRROR_AUTO) {
+					// 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();
+
+					mir->plane.pt = face.v[0];
+					mir->plane.normal = face.normal;
+				} else {
+					int plane_idx = obj->mtl.flat_mirror - MTL_MIRROR_AABB_PX;
+					mir->plane = obj->get_aabox().get_plane(plane_idx);
+					debug_log("mirror plane: p(%f %f %f) n(%f %f %f)\n", mir->plane.pt.x, mir->plane.pt.y,
+							mir->plane.pt.z, mir->plane.normal.x, mir->plane.normal.y, mir->plane.normal.z);
+				}
+
+				float pdist = dot(mir->plane.normal, mir->plane.pt);
+				Vec4 plane_eq = Vec4(mir->plane.normal.x, mir->plane.normal.y, mir->plane.normal.z, pdist);
+
+				if(obj->node) {
+					plane_eq = obj->node->get_matrix() * plane_eq;
+				}
+
+				// check to see if we have found this mirror plane already
+				bool found = false;
+				int nplanes = world_planes.size();
+				for(int k=0; k<nplanes; k++) {
+					if(1.0f - dot(plane_eq.xyz(), world_planes[k].xyz()) < 1e-4f &&
+							fabs(plane_eq.w - world_planes[k].w) < 1e-4) {
+						found = true;
+						break;
+					}
+				}
+
+				if(!found) {
+					mir->next = mirrors;
+					mirrors = mir;
+
+					world_planes.push_back(plane_eq);
+
+					mir->objects.push_back(obj);
+					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;
@@ -425,6 +516,35 @@ static bool proc_mtledit(MetaScene *mscn, MaterialEdit *med, struct ts_node *nod
 		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;
+			int plane = MTL_MIRROR_AUTO;
+
+			struct ts_attr *aplane = ts_get_attr(cn, "plane");
+			if(aplane) {
+				if(aplane->val.type == TS_NUMBER) {
+					plane = MTL_MIRROR_AABB_PX + aplane->val.inum;
+				} else {
+					char csign, caxis;
+					if(sscanf(aplane->val.str, "aabb%c%c", &csign, &caxis) != 2 || (csign != '+' && csign != '-')) {
+						error_log("invalid reflect plane specifier: %s\n", aplane->val.str);
+						continue;
+					}
+
+					switch(tolower(caxis)) {
+					case 'x':
+						plane = csign == '+' ? MTL_MIRROR_AABB_PX : MTL_MIRROR_AABB_NX;
+						break;
+					case 'y':
+						plane = csign == '+' ? MTL_MIRROR_AABB_PY : MTL_MIRROR_AABB_NY;
+						break;
+					case 'z':
+						plane = csign == '+' ? MTL_MIRROR_AABB_PZ : MTL_MIRROR_AABB_NZ;
+						break;
+					default:
+						error_log("invalid reflect plane specifier: %s\n", aplane->val.str);
+						continue;
+					}
+				}
+			}
 
 			struct ts_attr *arefl = ts_get_attr(cn, "reflect");
 			if(arefl) {
@@ -438,6 +558,7 @@ static bool proc_mtledit(MetaScene *mscn, MaterialEdit *med, struct ts_node *nod
 
 			med->type = MTL_EDIT_MIRROR;
 			med->mirror.reflectivity = refl;
+			med->mirror.plane = plane;
 			break;
 		}
 	}
@@ -504,7 +625,7 @@ static void apply_mtledit(Material *mtl, const MaterialEdit &med)
 		break;
 
 	case MTL_EDIT_MIRROR:
-		mtl->flat_mirror = med.mirror.reflectivity > 1e-6;
+		mtl->flat_mirror = med.mirror.plane;
 		mtl->reflect = med.mirror.reflectivity;
 		break;
 	}