FIFE  2008.0
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gridrenderer.cpp
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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 *
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8  * License as published by the Free Software Foundation; either *
9  * version 2.1 of the License, or (at your option) any later version. *
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13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
14  * Lesser General Public License for more details. *
15  * *
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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 "gridrenderer.h"
40 
41 
42 namespace FIFE {
43  static Logger _log(LM_VIEWVIEW);
44 
45  GridRenderer::GridRenderer(RenderBackend* renderbackend, int position):
46  RendererBase(renderbackend, position) {
47  setEnabled(false);
48  m_color.r = 0;
49  m_color.g = 255;
50  m_color.b = 0;
51  }
52 
53  GridRenderer::GridRenderer(const GridRenderer& old):
54  RendererBase(old),
55  m_color(old.m_color) {
56  setEnabled(false);
57  }
58 
59  RendererBase* GridRenderer::clone() {
60  return new GridRenderer(*this);
61  }
62 
63  GridRenderer::~GridRenderer() {
64  }
65 
66  GridRenderer* GridRenderer::getInstance(IRendererContainer* cnt) {
67  return dynamic_cast<GridRenderer*>(cnt->getRenderer("GridRenderer"));
68  }
69 
70  void GridRenderer::render(Camera* cam, Layer* layer, RenderList& instances) {
71  CellGrid* cg = layer->getCellGrid();
72  if (!cg) {
73  FL_WARN(_log, "No cellgrid assigned to layer, cannot draw grid");
74  return;
75  }
76  m_renderbackend->disableLighting();
77 //
78 //
79 // //render elev_coord box
80 // //draw front quad
81 // // 1,1,1
82 // //1,-1,1
83 // //-1,-1,1
84 // //-1,1,1
85  //We don't need the elevation box atm
86 // Point a,b,c,d;
87 //
88 //
89 // ScreenPoint copt1 =cam->toScreenCoordinates(ExactModelCoordinate(1,1,1) );
90 // ScreenPoint copt2 =cam->toScreenCoordinates(ExactModelCoordinate(1,-1,1) );
91 // Point coptt1(copt1.x,copt1.y);
92 // Point coptt2(copt2.x,copt2.y);
93 // m_renderbackend->drawLine(coptt1,coptt2 ,15, 15, 200);
94 // a = coptt1;
95 //
96 // copt1 =cam->toScreenCoordinates(ExactModelCoordinate(1,-1,1) );
97 // copt2 =cam->toScreenCoordinates(ExactModelCoordinate(-1,-1,1) );
98 // coptt1 = Point(copt1.x,copt1.y);
99 // coptt2 = Point(copt2.x,copt2.y);
100 // m_renderbackend->drawLine(coptt1,coptt2 ,15, 15, 200);
101 // b = coptt1;
102 //
103 // copt1 =cam->toScreenCoordinates(ExactModelCoordinate(-1,-1,1) );
104 // copt2 =cam->toScreenCoordinates(ExactModelCoordinate(-1,1,1) );
105 // coptt1 = Point(copt1.x,copt1.y);
106 // coptt2 = Point(copt2.x,copt2.y);
107 // m_renderbackend->drawLine(coptt1,coptt2 ,15, 15, 200);
108 // c = coptt1;
109 //
110 // copt1 =cam->toScreenCoordinates(ExactModelCoordinate(-1,1,1) );
111 // copt2 =cam->toScreenCoordinates(ExactModelCoordinate(1,1,1) );
112 // coptt1 = Point(copt1.x,copt1.y);
113 // coptt2 = Point(copt2.x,copt2.y);
114 // m_renderbackend->drawLine(coptt1,coptt2 ,15, 15, 20);
115 // d = coptt1;
116 //
117 // m_renderbackend->drawQuad(a,b,c,d,15, 15, 200);
118 //
119 //
120 // //draw back quad
121 // copt1 =cam->toScreenCoordinates(ExactModelCoordinate(-1,-1,-1) );
122 // copt2 =cam->toScreenCoordinates(ExactModelCoordinate(-1,1,-1) );
123 // coptt1 = Point(copt1.x,copt1.y);
124 // coptt2 = Point(copt2.x,copt2.y);
125 // m_renderbackend->drawLine(coptt1,coptt2 ,200, 200, 200);
126 //
127 // copt1 =cam->toScreenCoordinates(ExactModelCoordinate(-1,1,-1) );
128 // copt2 =cam->toScreenCoordinates(ExactModelCoordinate(1,1,-1) );
129 // coptt1 = Point(copt1.x,copt1.y);
130 // coptt2 = Point(copt2.x,copt2.y);
131 // m_renderbackend->drawLine(coptt1,coptt2 ,200, 200, 200);
132 //
133 // copt1 =cam->toScreenCoordinates(ExactModelCoordinate(1,1,-1) );
134 // copt2 =cam->toScreenCoordinates(ExactModelCoordinate(1,-1,-1) );
135 // coptt1 = Point(copt1.x,copt1.y);
136 // coptt2 = Point(copt2.x,copt2.y);
137 // m_renderbackend->drawLine(coptt1,coptt2 ,200, 200, 200);
138 //
139 // copt1 =cam->toScreenCoordinates(ExactModelCoordinate(1,-1,-1) );
140 // copt2 =cam->toScreenCoordinates(ExactModelCoordinate(-1,-1,-1) );
141 // coptt1 = Point(copt1.x,copt1.y);
142 // coptt2 = Point(copt2.x,copt2.y);
143 // m_renderbackend->drawLine(coptt1,coptt2 ,200, 200, 200);
144 
145 
146  Rect cv = cam->getViewPort();
147  int cvx2 = cv.x+cv.w;
148  int cvy2 = cv.y+cv.h;
149  RenderList::const_iterator instance_it = instances.begin();
150  for (;instance_it != instances.end(); ++instance_it) {
151  Instance* instance = (*instance_it)->instance;
152  std::vector<ExactModelCoordinate> vertices;
153  cg->getVertices(vertices, instance->getLocationRef().getLayerCoordinates());
154  std::vector<ExactModelCoordinate>::const_iterator it = vertices.begin();
155  ScreenPoint firstpt = cam->toScreenCoordinates(cg->toMapCoordinates(*it));
156  Point pt1(firstpt.x, firstpt.y);
157  Point pt2;
158  ++it;
159  for (; it != vertices.end(); it++) {
160  ScreenPoint pts = cam->toScreenCoordinates(cg->toMapCoordinates(*it));
161  pt2.x = pts.x;
162  pt2.y = pts.y;
163  Point cpt1 = pt1;
164  Point cpt2 = pt2;
165 
166  if (cpt1.x < cv.x) cpt1.x = cv.x;
167  if (cpt2.x < cv.x) cpt2.x = cv.x;
168  if (cpt1.y < cv.y) cpt1.y = cv.y;
169  if (cpt2.y < cv.y) cpt2.y = cv.y;
170  if (cpt1.x > cvx2) cpt1.x = cvx2;
171  if (cpt2.x > cvx2) cpt2.x = cvx2;
172  if (cpt1.y > cvy2) cpt1.y = cvy2;
173  if (cpt2.y > cvy2) cpt2.y = cvy2;
174 
175  m_renderbackend->drawLine(cpt1, cpt2, m_color.r, m_color.g, m_color.b);
176  pt1 = pt2;
177  }
178  if ((pt2.x >= cv.x) && (pt2.x <= cvx2) && (pt2.y >= cv.y) && (pt2.y <= cvy2)) {
179  if ((firstpt.x >= cv.x) && (firstpt.x <= cvx2) && (firstpt.y >= cv.y) && (firstpt.y <= cvy2)) {
180  m_renderbackend->drawLine(pt2, Point(firstpt.x, firstpt.y), m_color.r, m_color.g, m_color.b);
181  }
182  }
183  }
184  m_renderbackend->enableLighting();
185  }
186 
187  void GridRenderer::setColor(Uint8 r, Uint8 g, Uint8 b) {
188  m_color.r = r;
189  m_color.g = g;
190  m_color.b = b;
191  }
192 }