--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/engine/core/view/renderers/gridrenderer.cpp	Sun Jun 29 18:44:17 2008 +0000
@@ -0,0 +1,181 @@
+/***************************************************************************
+ *   Copyright (C) 2005-2008 by the FIFE team                              *
+ *   http://www.fifengine.de                                               *
+ *   This file is part of FIFE.                                            *
+ *                                                                         *
+ *   FIFE is free software; you can redistribute it and/or modify          *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA              *
+ ***************************************************************************/
+
+// Standard C++ library includes
+
+// 3rd party library includes
+
+// FIFE includes
+// These includes are split up in two parts, separated by one empty line
+// First block: files included from the FIFE root src directory
+// Second block: files included from the same folder
+#include "video/renderbackend.h"
+#include "util/math/fife_math.h"
+#include "util/log/logger.h"
+#include "model/metamodel/grids/cellgrid.h"
+#include "model/structures/instance.h"
+#include "model/structures/layer.h"
+#include "model/structures/location.h"
+
+#include "view/camera.h"
+#include "gridrenderer.h"
+
+
+namespace FIFE {
+	static Logger _log(LM_VIEWVIEW);
+
+	GridRenderer::GridRenderer(RenderBackend* renderbackend, int position):
+		RendererBase(renderbackend, position) {
+		setEnabled(false);
+	}
+
+ 	GridRenderer::GridRenderer(const GridRenderer& old):
+		RendererBase(old) {
+		setEnabled(false);
+	}
+
+	RendererBase* GridRenderer::clone() {
+		return new GridRenderer(*this);
+	}
+
+	GridRenderer::~GridRenderer() {
+	}
+
+	void GridRenderer::render(Camera* cam, Layer* layer, std::vector<Instance*>& instances) {
+		CellGrid* cg = layer->getCellGrid();
+		if (!cg) {
+			FL_WARN(_log, "No cellgrid assigned to layer, cannot draw grid");
+			return;
+		}
+//
+//
+//		//render elev_coord box
+//		//draw front quad
+//		// 1,1,1
+//		//1,-1,1
+//		//-1,-1,1
+//		//-1,1,1
+		Point a,b,c,d;
+
+
+		ScreenPoint copt1 =cam->toScreenCoordinates(ExactModelCoordinate(1,1,1) );
+		ScreenPoint copt2 =cam->toScreenCoordinates(ExactModelCoordinate(1,-1,1) );
+		Point coptt1(copt1.x,copt1.y);
+		Point coptt2(copt2.x,copt2.y);
+		m_renderbackend->drawLine(coptt1,coptt2 ,15, 15, 200);
+		a = coptt1;
+
+		copt1 =cam->toScreenCoordinates(ExactModelCoordinate(1,-1,1) );
+		copt2 =cam->toScreenCoordinates(ExactModelCoordinate(-1,-1,1) );
+		coptt1 = Point(copt1.x,copt1.y);
+		coptt2 = Point(copt2.x,copt2.y);
+		m_renderbackend->drawLine(coptt1,coptt2 ,15, 15, 200);
+		b = coptt1;
+
+		copt1 =cam->toScreenCoordinates(ExactModelCoordinate(-1,-1,1) );
+		copt2 =cam->toScreenCoordinates(ExactModelCoordinate(-1,1,1) );
+		coptt1 = Point(copt1.x,copt1.y);
+		coptt2 = Point(copt2.x,copt2.y);
+		m_renderbackend->drawLine(coptt1,coptt2 ,15, 15, 200);
+		c = coptt1;
+
+		copt1 =cam->toScreenCoordinates(ExactModelCoordinate(-1,1,1) );
+		copt2 =cam->toScreenCoordinates(ExactModelCoordinate(1,1,1) );
+		coptt1 = Point(copt1.x,copt1.y);
+		coptt2 = Point(copt2.x,copt2.y);
+		m_renderbackend->drawLine(coptt1,coptt2 ,15, 15, 20);
+		d = coptt1;
+
+		m_renderbackend->drawQuad(a,b,c,d,15, 15, 200);
+//
+//
+//		//draw back quad
+		copt1 =cam->toScreenCoordinates(ExactModelCoordinate(-1,-1,-1) );
+		copt2 =cam->toScreenCoordinates(ExactModelCoordinate(-1,1,-1) );
+		coptt1 = Point(copt1.x,copt1.y);
+		coptt2 = Point(copt2.x,copt2.y);
+		m_renderbackend->drawLine(coptt1,coptt2 ,200, 200, 200);
+
+		copt1 =cam->toScreenCoordinates(ExactModelCoordinate(-1,1,-1) );
+		copt2 =cam->toScreenCoordinates(ExactModelCoordinate(1,1,-1) );
+		coptt1 = Point(copt1.x,copt1.y);
+		coptt2 = Point(copt2.x,copt2.y);
+		m_renderbackend->drawLine(coptt1,coptt2 ,200, 200, 200);
+
+		copt1 =cam->toScreenCoordinates(ExactModelCoordinate(1,1,-1) );
+		copt2 =cam->toScreenCoordinates(ExactModelCoordinate(1,-1,-1) );
+		coptt1 = Point(copt1.x,copt1.y);
+		coptt2 = Point(copt2.x,copt2.y);
+		m_renderbackend->drawLine(coptt1,coptt2 ,200, 200, 200);
+
+		copt1 =cam->toScreenCoordinates(ExactModelCoordinate(1,-1,-1) );
+		copt2 =cam->toScreenCoordinates(ExactModelCoordinate(-1,-1,-1) );
+		coptt1 = Point(copt1.x,copt1.y);
+		coptt2 = Point(copt2.x,copt2.y);
+		m_renderbackend->drawLine(coptt1,coptt2 ,200, 200, 200);
+
+
+		Rect cv = cam->getViewPort();
+		std::vector<Instance*>::const_iterator instance_it = instances.begin();
+		for (;instance_it != instances.end(); ++instance_it) {
+			Instance* instance = *instance_it;
+			std::vector<ExactModelCoordinate> vertices;
+			cg->getVertices(vertices, instance->getLocationRef().getLayerCoordinates());
+			std::vector<ExactModelCoordinate>::const_iterator it = vertices.begin();
+			ScreenPoint firstpt = cam->toScreenCoordinates(cg->toMapCoordinates(*it));
+			Point pt1(firstpt.x, firstpt.y);
+			Point pt2;
+			++it;
+			for (; it != vertices.end(); it++) {
+				ScreenPoint pts = cam->toScreenCoordinates(cg->toMapCoordinates(*it));
+				pt2.x = pts.x; pt2.y = pts.y;
+				Point cpt1 = pt1;
+				Point cpt2 = pt2;
+				/* FIXME: limit grid drawing to current camera view port
+				   code below does not do it, but may act as a starting point
+
+				int cvx2 = cv.x+cv.w;
+				int cvy2 = cv.y+cv.h;
+
+				if (((pt1.x < cv.x) && (pt2.x < cv.x)) ||
+				    ((pt1.x > cvx2) && (pt2.x > cvx2)) ||
+				    ((pt1.y < cv.y) && (pt2.y < cv.y)) ||
+				    ((pt1.y > cvy2) && (pt2.y > cvy2))) {
+				    pt1 = pt2;
+				    continue;
+				}
+
+				if (cpt1.x < cv.x) cpt1.x = cv.x;
+				if (cpt2.x < cv.x) cpt2.x = cv.x;
+				if (cpt1.y < cv.y) cpt1.y = cv.y;
+				if (cpt2.y < cv.y) cpt2.y = cv.y;
+				if (cpt1.x > cvx2) cpt1.x = cvx2;
+				if (cpt2.x > cvx2) cpt2.x = cvx2;
+				if (cpt1.y > cvy2) cpt1.y = cvy2;
+				if (cpt2.y > cvy2) cpt2.y = cvy2;
+				*/
+				m_renderbackend->drawLine(cpt1, cpt2, 0, 255, 0);
+				pt1 = pt2;
+			}
+			m_renderbackend->drawLine(pt2, Point(firstpt.x, firstpt.y), 0, 255, 0);
+		}
+	}
+}