SimpleEarth/src/Hud.cpp at master · MAPSWorks/SimpleEarth · GitHub

History

223 lines (199 loc) · 6.74 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

* The Simple Earth Project

* Author: Hector Mendoza, hector.mendoza@huesoftllc.com

* This file is part of the Simple Earth Project.

* The Simple Earth Project is free software: you can redistribute it

* and/or modify it under the terms of the GNU Lesser General Public

* License as published by the Free Software Foundation, either version

* 3 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

* Lesser General Public License for more details.

* You should have received a copy of the GNU Lesser General Public

* License along with this program. If not, see

* <http://www.gnu.org/licenses/>.

#include "Hud.h"

#include "globals.h"

#include "WorldObjectManager.h"

#include "Utilities.h"

#include "Camera.h"

Hud* Hud::mInstance = NULL;//Singleton implementation

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

/**

* Constructor. Initializes attributes.

Hud::Hud()

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

{

mShowHud = true;

mShowLabels = false;

mPainter = NULL;

}

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

/**

* Destructor.

Hud::~Hud()

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

{

mInstance = NULL;

}

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

/**

* Singleton pattern implementation. Returns the single instance of this class.

* @return The single instance of this class

Hud* Hud::getInstance()

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

{

if (mInstance == NULL)

{

mInstance = new Hud();

}

return mInstance;

}

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

/**

* Returns true if Heads Up Display (HUD) is shown.

* @return True if Heads Up Display (HUD) is shown, false otherwise

bool Hud::getShowHud()

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

{

return mShowHud;

}

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

/**

* Returns true if world object labels are shown.

* @return True if world object labels are shown, false otherwise

bool Hud::getShowLabels()

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

{

return mShowLabels;

}

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

/**

* Sets the value of flag to show/hide Heads Up Display (HUD).

* @param show Set to true if you want the HUD to be shown

void Hud::setShowHud(bool show)

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

{

mShowHud = show;

}

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

/**

* Sets the value of flag to show/hide world object labels.

* @param show Set to true if you want world object labels to be shown

void Hud::setShowLabels(bool show)

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

{

mShowLabels = show;

}

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

/**

* Sets the handle to the painter object. This handle is used to invoke Qt's

* OpenGL text rendering capabilities.

* @param painter Handle to Qt painter object

void Hud::setPainter(QPainter* painter)

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

{

mPainter = painter;

}

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

/**

* Renders the Heads Up Display (HUD). Currently, the HUD renders the camera's

* position on the upper left corner of the screen and also renders all the

* world object labels.

void Hud::renderHud()

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

{

mPainter->setBrush(QBrush(QColor(0,0,0,100)));

mPainter->setFont(QFont("Arial", 13));

if (mShowHud)

{

//draw semi-transparent black rectangle

mPainter->drawRect(12,10,195,68);

GeodeticPosition cameraPosition = Camera::getInstance()->getGeodeticPosition();

QString latStr = "Lat: " + Utilities::decimalDegreesToDMS(cameraPosition.latitude, true);

QString lonStr = "Lon: " + Utilities::decimalDegreesToDMS(cameraPosition.longitude, false);

//display camera altitude in Km or m

float altitudeKm = cameraPosition.altitude;

QString altStr;

if (altitudeKm < 1.0f)

{

int altitudeMeters = altitudeKm * 1000.0f;

altStr = "Alt: " + QString::number(altitudeMeters) + "m";

}

else

{

altStr = "Alt: " + QString::number(altitudeKm, 'f', 1) + "Km";

}

mPainter->setPen(Qt::white);

mPainter->drawText(20, 30, latStr);

mPainter->drawText(20, 50, lonStr);

mPainter->drawText(20, 70, altStr);

}

if (mShowLabels)

{

//render world object labels

renderWorldObjectLabels();

}

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

/**

* Renders the labels for all world objects.

void Hud::renderWorldObjectLabels()

//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

{

WorldObjectManager* worldObjectManager = WorldObjectManager::getInstance();

Camera* camera = Camera::getInstance();

WorldObject* worldObject = NULL;

SimpleVector screenLocation;

QString label;

ScreenCoordinates screenSize = Camera::getInstance()->getScreenSize();

for (int i = 0; i < worldObjectManager->getNumberOfObjects(); i++)

{

worldObject = worldObjectManager->getWorldObject(i);

if (worldObject != NULL && !worldObject->getHasExpired())

{

screenLocation = worldObject->getScreenLocation();

//only draw the label if world object is not being obscured by the earth

//and if projection is not negative (not behind the camera, which means

//screenZ is below 1.0)

if (screenLocation.z < 1.0f &&

!Utilities::checkObscure(camera->getGeodeticPosition(),worldObject->getGeodeticPosition()) &&

worldObject->getIsVisible())

{

label = worldObject->getLabel();

//set pen color to world object color

SimpleColor color = worldObject->getColor();

int red = color.red * 255.0f;

int green = color.green * 255.0f;

int blue = color.blue * 255.0f;

mPainter->setPen(QColor(red, green, blue));

//reverse Y to screen coordinates

screenLocation.y = (float)screenSize.y - screenLocation.y;

mPainter->drawText((int)(screenLocation.x+20.0), (int)screenLocation.y, label);

}

SimpleEarth/src/Hud.cpp at master · MAPSWorks/SimpleEarth · GitHub

Uh oh!

Expand file tree

Breadcrumbs

Hud.cpp

Latest commit

History

Breadcrumbs

Hud.cpp

File metadata and controls