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comparison engine/core/view/renderers/quadtreerenderer.cpp @ 0:4a0efb7baf70

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* Datasets becomes the new trunk and retires after that :-)
author mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
date Sun, 29 Jun 2008 18:44:17 +0000
parents
children 90005975cdbb
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-1:000000000000 0:4a0efb7baf70
1 /***************************************************************************
2 * Copyright (C) 2005-2008 by the FIFE team *
3 * http://www.fifengine.de *
4 * This file is part of FIFE. *
5 * *
6 * FIFE is free software; you can redistribute it and/or modify *
7 * it under the terms of the GNU General Public License as published by *
8 * the Free Software Foundation; either version 2 of the License, or *
9 * (at your option) any later version. *
10 * *
11 * This program is distributed in the hope that it will be useful, *
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
14 * GNU General Public License for more details. *
15 * *
16 * You should have received a copy of the GNU General Public License *
17 * along with this program; if not, write to the *
18 * Free Software Foundation, Inc., *
19 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA *
20 ***************************************************************************/
21
22 // Standard C++ library includes
23
24 // 3rd party library includes
25
26 // FIFE includes
27 // These includes are split up in two parts, separated by one empty line
28 // First block: files included from the FIFE root src directory
29 // Second block: files included from the same folder
30 #include "video/renderbackend.h"
31 #include "util/math/fife_math.h"
32 #include "util/log/logger.h"
33 #include "model/metamodel/grids/cellgrid.h"
34 #include "model/structures/instance.h"
35 #include "model/structures/layer.h"
36 #include "model/structures/location.h"
37
38 #include "view/camera.h"
39 #include "quadtreerenderer.h"
40 #include "model/structures/instancetree.h"
41 #include "util/structures/quadtree.h"
42
43 ///credit to phoku for his NodeDisplay example which the visitor code is adapted from ( he coded the quadtree after all )
44 namespace FIFE {
45 static Logger _log(LM_VIEWVIEW);
46
47 QuadTreeRenderer::QuadTreeRenderer(RenderBackend* renderbackend, int position):
48 RendererBase(renderbackend, position) {
49 setEnabled(false);
50 }
51
52 QuadTreeRenderer::QuadTreeRenderer(const QuadTreeRenderer& old):
53 RendererBase(old) {
54 setEnabled(false);
55 }
56
57 RendererBase* QuadTreeRenderer::clone() {
58 return new QuadTreeRenderer(*this);
59 }
60
61 QuadTreeRenderer::~QuadTreeRenderer() { }
62 RenderVisitor::RenderVisitor(RenderBackend * rb, Layer * layer, Camera *camera) {
63
64 m_renderbackend = rb;
65 m_layer = layer;
66 m_camera = camera;
67 }
68
69 RenderVisitor::~RenderVisitor() {}
70
71 template<typename T> bool RenderVisitor::visit(QuadNode<T,2>* node, int d) {
72
73 if (d==0)
74 visited = 0;
75
76 int x = node->x();
77 int y = node->y();
78 int size = node->size();
79
80 ++visited;
81 CellGrid *cg = m_layer->getCellGrid(); ///we have checked for null pointer in quadtreerenderer::render().. no need to check again
82
83
84 ExactModelCoordinate emc= cg->toMapCoordinates(ExactModelCoordinate( x,y) );//0.5 for each cell's half-width
85 ScreenPoint scrpt1 =m_camera->toScreenCoordinates( emc );
86 emc= cg->toMapCoordinates(ExactModelCoordinate( x,y+size) );// this size usage is wrong.. me thinks
87 ScreenPoint scrpt2 =m_camera->toScreenCoordinates( emc );
88 emc= cg->toMapCoordinates(ExactModelCoordinate( x+size,y) );
89 ScreenPoint scrpt3 =m_camera->toScreenCoordinates( emc );
90 emc= cg->toMapCoordinates(ExactModelCoordinate( x+size,y+size) );
91 ScreenPoint scrpt4 =m_camera->toScreenCoordinates( emc );
92
93 m_renderbackend->drawLine( Point(scrpt1.x,scrpt1.y) , Point(scrpt2.x,scrpt2.y), 255, 255, 255);
94 m_renderbackend->drawLine(Point(scrpt1.x,scrpt1.y), Point(scrpt3.x,scrpt3.y), 255, 255, 255);
95 m_renderbackend->drawLine(Point(scrpt3.x,scrpt3.y), Point(scrpt4.x,scrpt4.y), 255, 255, 255);
96 m_renderbackend->drawLine(Point(scrpt2.x,scrpt2.y), Point(scrpt4.x,scrpt4.y), 255, 255, 255);
97
98 return true;
99 }
100
101
102 void QuadTreeRenderer::render(Camera* cam, Layer* layer, std::vector<Instance*>& instances) {
103 CellGrid* cg = layer->getCellGrid();
104 if (!cg) {
105 FL_WARN(_log, "No cellgrid assigned to layer, cannot draw grid");
106 return;
107 }
108 InstanceTree * itree = layer->getInstanceTree();
109 RenderVisitor VIPguess(m_renderbackend, layer,cam);
110 itree->applyVisitor(VIPguess);
111 }
112
113 }
114