X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2F3d%2Ftracktype.cpp;h=a60c9a6f7611425c737fb09c2e69ec3f6b8d717e;hb=26e741a3e8f1c83e717318f69ff02eed9b0ef6de;hp=94a941a983f94fcd0392d4bb0b2237d5e32f60e2;hpb=47341c72a70e6cf9d8e963705a50197bbc20a87d;p=r2c2.git

diff --git a/source/3d/tracktype.cpp b/source/3d/tracktype.cpp
index 94a941a..a60c9a6 100644
--- a/source/3d/tracktype.cpp
+++ b/source/3d/tracktype.cpp
@@ -1,13 +1,13 @@
 /* $Id$
 
-This file is part of the MSP Märklin suite
-Copyright © 2010 Mikkosoft Productions, Mikko Rasa
+This file is part of R²C²
+Copyright © 2010-2011  Mikkosoft Productions, Mikko Rasa
 Distributed under the GPL
 */
 
 #include <algorithm>
 #include <cmath>
-#include <msp/gl/meshbuilder.h>
+#include <msp/gl/technique.h>
 #include "catalogue.h"
 #include "tracktype.h"
 
@@ -16,7 +16,7 @@ using namespace Msp;
 
 namespace {
 
-bool compare_z(const Marklin::Point &p1, const Marklin::Point &p2)
+bool compare_z(const R2C2::Vector &p1, const R2C2::Vector &p2)
 {
 	return p1.z<p2.z;
 }
@@ -27,7 +27,7 @@ Iter graham_scan(Iter begin, Iter end)
 	// http://en.wikipedia.org/wiki/Graham_scan
 
 	// Find point with lowest X coordinate
-	Marklin::Point lowest = *begin;
+	R2C2::Vector lowest = *begin;
 	for(Iter i=begin; i!=end; ++i)
 		if(i->x<lowest.x || (i->x==lowest.x && i->y>lowest.y))
 			lowest = *i;
@@ -69,47 +69,85 @@ Iter graham_scan(Iter begin, Iter end)
 
 }
 
-namespace Marklin {
+namespace R2C2 {
 
-TrackType3D::TrackType3D(const Catalogue3D &cat3d, const TrackType &tt):
+TrackType3D::TrackType3D(Catalogue3D &cat3d, const TrackType &tt):
 	catalogue(cat3d),
-	ballast_mesh((GL::NORMAL3, GL::COLOR4_UBYTE, GL::VERTEX3)),
-	rail_mesh((GL::NORMAL3, GL::COLOR4_UBYTE, GL::VERTEX3))
+	mesh(0),
+	object(0)
 {
 	const Catalogue &cat = cat3d.get_catalogue();
 	const vector<TrackPart> &parts = tt.get_parts();
 
 	const Profile &ballast_profile = cat.get_ballast_profile();
-	const Point &ballast_min = ballast_profile.get_min_coords();
-	const Point &ballast_max = ballast_profile.get_max_coords();
+	const Vector &ballast_min = ballast_profile.get_min_coords();
+	const Vector &ballast_max = ballast_profile.get_max_coords();
+	float ballast_h = ballast_max.y-ballast_min.y;
 
 	const Profile &rail_profile = cat.get_rail_profile();
-	const Point &rail_min = rail_profile.get_min_coords();
-	const Point &rail_max = rail_profile.get_max_coords();
+	const Vector &rail_min = rail_profile.get_min_coords();
+	const Vector &rail_max = rail_profile.get_max_coords();
+	float rail_h = rail_max.y-rail_min.y;
 
 	float gauge = cat.get_gauge();
 
+	string obj_name = tt.get_object();
+	if(!obj_name.empty())
 	{
-		unsigned index = 0;
-		GL::MeshBuilder bld(ballast_mesh);
-		bld.color(0.25f, 0.25f, 0.25f);
-		for(vector<TrackPart>::const_iterator i=parts.begin(); i!=parts.end(); ++i)
-			build_part(*i, ballast_profile, Point(0, -ballast_min.y), bld, index);
+		object = catalogue.get<GL::Object>(obj_name);
+		const GL::Mesh *m = object->get_mesh();
+		const GL::VertexArray &vertices = m->get_vertices();
+		int vertex_offs = vertices.get_format().offset(GL::VERTEX2);
+		if(vertex_offs>=0)
+		{
+			for(unsigned i=0; i<vertices.size(); ++i)
+			{
+				const float *v = vertices[i]+vertex_offs;
+				border.push_back(Vector(v[0], v[1]));
+			}
+		}
 	}
-
+	else
 	{
+		mesh = new GL::Mesh((GL::NORMAL3, GL::TEXCOORD2, GL::VERTEX3));
+		mesh->set_winding(&GL::WindingTest::counterclockwise());
+		GL::MeshBuilder bld(*mesh);
+
 		unsigned index = 0;
-		GL::MeshBuilder bld(rail_mesh);
-		bld.color(0.85f, 0.85f, 0.85f);
-		float y = ballast_max.y-ballast_min.y-rail_min.y;
+		bld.texcoord(0.25, 0.5);
+		for(vector<TrackPart>::const_iterator i=parts.begin(); i!=parts.end(); ++i)
+			build_part(*i, ballast_profile, Vector(0, -ballast_min.y), false, bld, index);
+
+		bld.texcoord(0.75, 0.5);
+		float y = ballast_h-rail_min.y;
 		for(vector<TrackPart>::const_iterator i=parts.begin(); i!=parts.end(); ++i)
-			build_part(*i, rail_profile, Point(-gauge/2-rail_max.x, y), bld, index);
+			build_part(*i, rail_profile, Vector(-gauge/2, y), true, bld, index);
 		for(vector<TrackPart>::const_iterator i=parts.begin(); i!=parts.end(); ++i)
-			build_part(*i, rail_profile, Point(gauge/2-rail_min.x, y), bld, index);
+			build_part(*i, rail_profile, Vector(gauge/2, y), false, bld, index);
+
+		object = new GL::Object;
+		object->set_mesh(mesh);
+		object->set_technique(catalogue.get<GL::Technique>(cat.get_track_technique()));
+	}
+ 
+	unsigned paths = tt.get_paths();
+	for(unsigned i=0; paths; ++i, paths>>=1)
+	{
+		GL::Mesh *m = 0;
+		if(paths&1)
+		{
+			m = new GL::Mesh(GL::VERTEX3);
+			GL::MeshBuilder bld(*m);
+			unsigned index = 0;
+			for(vector<TrackPart>::const_iterator j=parts.begin(); j!=parts.end(); ++j)
+				if(j->get_path()==i)
+					build_part(*j, cat.get_path_profile(), Vector(0, ballast_h+1.5*rail_h), false, bld, index);
+		}
+		path_meshes.push_back(m);
 	}
 
 	min_z = max_z = border.front().z;
-	for(vector<Point>::iterator i=border.begin(); i!=border.end(); ++i)
+	for(vector<Vector>::iterator i=border.begin(); i!=border.end(); ++i)
 	{
 		min_z = min(min_z, i->z);
 		max_z = max(max_z, i->z);
@@ -117,16 +155,22 @@ TrackType3D::TrackType3D(const Catalogue3D &cat3d, const TrackType &tt):
 	border.erase(graham_scan(border.begin(), border.end()), border.end());
 }
 
-void TrackType3D::get_bounds(float angle, Point &minp, Point &maxp) const
+TrackType3D::~TrackType3D()
+{
+	for(vector<GL::Mesh *>::iterator i=path_meshes.begin(); i!=path_meshes.end(); ++i)
+		delete *i;
+}
+
+void TrackType3D::get_bounds(float angle, Vector &minp, Vector &maxp) const
 {
 	float c = cos(-angle);
 	float s = sin(-angle);
 
-	minp = maxp = Point();
+	minp = maxp = Vector();
 	minp.z = min_z;
 	maxp.z = max_z;
 
-	for(vector<Point>::const_iterator i=border.begin(); i!=border.end(); ++i)
+	for(vector<Vector>::const_iterator i=border.begin(); i!=border.end(); ++i)
 	{
 		float x = c*i->x-s*i->y;
 		float y = s*i->x+c*i->y;
@@ -138,68 +182,63 @@ void TrackType3D::get_bounds(float angle, Point &minp, Point &maxp) const
 	}
 }
 
-void TrackType3D::render(const GL::Tag &tag) const
+const GL::Mesh &TrackType3D::get_path_mesh(unsigned p) const
 {
-	if(tag==0)
-	{
-		catalogue.get_ballast_material().bind();
-		ballast_mesh.draw();
-		catalogue.get_rail_material().bind();
-		rail_mesh.draw();
-	}
+	if(p>=path_meshes.size() || !path_meshes[p])
+		throw InvalidParameterValue("Invalid path");
+	return *path_meshes[p];
 }
 
-void TrackType3D::build_part(const TrackPart &part, const Profile &profile, const Point &offset, GL::MeshBuilder &bld, unsigned &base_index)
+void TrackType3D::build_part(const TrackPart &part, const Profile &profile, const Vector &offset, bool mirror, GL::MeshBuilder &bld, unsigned &base_index)
 {
-	unsigned nsegs = (part.radius ? static_cast<unsigned>(part.length*16)+1 : 1);
-	float plen = part.length;
-	if(part.radius)
-		plen *= abs(part.radius);
+	float plen = part.get_length();
+	unsigned nsegs = (part.is_curved() ? static_cast<unsigned>(plen*32)+1 : 1);
 
-	unsigned n_points = profile.get_n_points();
+	unsigned n_vertices = profile.get_n_vertices();
 	for(unsigned i=0; i<=nsegs; ++i)
 	{
-		float a = part.dir+(part.radius ? i*plen/nsegs/part.radius : 0);
-		float c = cos(a);
-		float s = sin(a);
-		Point basep = part.get_point(i*plen/nsegs);
+		TrackPoint basep = part.get_point(i*plen/nsegs);
+		float c = cos(basep.dir);
+		float s = sin(basep.dir);
 
-		Point p;
-		for(unsigned j=0; j<n_points; ++j)
+		for(unsigned j=0; j<n_vertices; ++j)
 		{
-			// TODO: smoothing - only duplicate vertex if the angle is large enough
+			const Profile::Vertex &v = profile.get_vertex(mirror ? n_vertices-1-j : j);
+			Vector p = v.pos;
+			if(mirror)
+				p.x = -p.x;
+			p.z = basep.pos.z+p.y+offset.y;
+			p.y = basep.pos.y-c*(p.x+offset.x);
+			p.x = basep.pos.x+s*(p.x+offset.x);
 
-			p = profile.get_point(j);
-			p.z = basep.z+p.y+offset.y;
-			p.y = basep.y-c*(p.x+offset.x);
-			p.x = basep.x+s*(p.x+offset.x);
-			if(j>0)
-				bld.vertex(p.x, p.y, p.z);
+			Vector n = v.normal;
+			if(mirror)
+				n.x = -n.x;
 
-			if(j+1<n_points)
-			{
-				Point n = profile.get_edge_normal(j);
-				bld.normal(s*n.x, -c*n.x, n.y);
-				bld.vertex(p.x, p.y, p.z);
-			}
+			bld.normal(s*n.x, -c*n.x, n.y);
+			bld.vertex(p.x, p.y, p.z);
 
 			border.push_back(p);
 		}
 	}
 
-	for(unsigned i=0; i+1<n_points; ++i)
+	for(unsigned i=0; i+1<n_vertices; )
 	{
 		bld.begin(GL::TRIANGLE_STRIP);
 		for(unsigned j=0; j<=nsegs; ++j)
 		{
-			unsigned k = (j*(n_points-1)+i)*2;
+			unsigned k = j*n_vertices+i;
 			bld.element(base_index+k+1);
 			bld.element(base_index+k);
 		}
 		bld.end();
+
+		++i;
+		if(!profile.get_vertex(i).smooth)
+			++i;
 	}
 
-	base_index += (nsegs+1)*(n_points-1)*2;
+	base_index += (nsegs+1)*n_vertices;
 }
 
-} // namespace Marklin
+} // namespace R2C2