Miroslaw K. / Mbed 2 deprecated RadarDemo

Simple radar simulator. Example of 2D graphics on DISCO-F746NG display.

Dependencies:   BSP_DISCO_F746NG Graphics mbed TS_DISCO_F746NG

RadarDemo/RadarDemo.cpp@4:66f13188c26b, 2016-11-05 (annotated)

Committer:
karpent
Date:
Sat Nov 05 20:24:59 2016 +0000
Revision:
4:66f13188c26b
Parent:
3:732f7144ec81 
Code refactoring, 400ms timeout added when button is pressed.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
karpent 0:d8b9955d2b36 1 //
karpent 0:d8b9955d2b36 2 // RadarDemo.cpp - example of graphic commands usage to create 2D graphics.
karpent 0:d8b9955d2b36 3 //
karpent 0:d8b9955d2b36 4
karpent 0:d8b9955d2b36 5 #include "RadarDemo.h"
karpent 0:d8b9955d2b36 6 #include "RK043FN48H.h"
karpent 0:d8b9955d2b36 7
karpent 2:8db224cc1fcb 8 // Size of range control areas on the screen
karpent 2:8db224cc1fcb 9 const int raSize = 50;
karpent 2:8db224cc1fcb 10
karpent 4:66f13188c26b 11 // Button Press Timeout in miliseconds
karpent 4:66f13188c26b 12 const uint32_t buttonPressTimeout = 400;
karpent 4:66f13188c26b 13
karpent 4:66f13188c26b 14
karpent 0:d8b9955d2b36 15 RadarDemo::RadarDemo(Display* display) : Radar(display)
karpent 0:d8b9955d2b36 16 {
karpent 4:66f13188c26b 17 _ts = new TouchScreen(display);
karpent 0:d8b9955d2b36 18 }
karpent 0:d8b9955d2b36 19
karpent 0:d8b9955d2b36 20
karpent 0:d8b9955d2b36 21 RadarDemo::~RadarDemo()
karpent 0:d8b9955d2b36 22 {
karpent 0:d8b9955d2b36 23 Radar::~Radar();
karpent 4:66f13188c26b 24 free(_ts);
karpent 0:d8b9955d2b36 25 }
karpent 0:d8b9955d2b36 26
karpent 0:d8b9955d2b36 27
karpent 0:d8b9955d2b36 28 void RadarDemo::Initialize()
karpent 0:d8b9955d2b36 29 {
karpent 1:5e49b46de1b0 30 // Set scan perion for 6 seconds
karpent 3:732f7144ec81 31 timer.SetScanPeriod(6);
karpent 0:d8b9955d2b36 32
karpent 1:5e49b46de1b0 33 // Run forever, to set limited time for the demo
karpent 1:5e49b46de1b0 34 // use for example: demoTime = 10 * scanPeriod;
karpent 1:5e49b46de1b0 35 demoTime = 0;
karpent 1:5e49b46de1b0 36
karpent 1:5e49b46de1b0 37 // Put a number of sample targets on the display
karpent 2:8db224cc1fcb 38 AddSampleTargets(30);
karpent 0:d8b9955d2b36 39
karpent 1:5e49b46de1b0 40 // Use medium range, values 0..2 are available now
karpent 0:d8b9955d2b36 41 SetRange(1);
karpent 1:5e49b46de1b0 42
karpent 0:d8b9955d2b36 43 // Remark : Data member initializer is not allowed for ARM compiler,
karpent 1:5e49b46de1b0 44 // initialize data in class constructor.
karpent 0:d8b9955d2b36 45 currentBeamAngle = 0;
karpent 0:d8b9955d2b36 46 lastBeamAngle = currentBeamAngle;
karpent 0:d8b9955d2b36 47
karpent 1:5e49b46de1b0 48 // Force background redraw
karpent 1:5e49b46de1b0 49 UnvalidateBackground();
karpent 4:66f13188c26b 50
karpent 4:66f13188c26b 51 _buttonPressTime = 0;
karpent 1:5e49b46de1b0 52
karpent 2:8db224cc1fcb 53 // Initialize touchscreen
karpent 4:66f13188c26b 54 _ts->Init();
karpent 4:66f13188c26b 55
karpent 4:66f13188c26b 56 timer.Start();
karpent 0:d8b9955d2b36 57 }
karpent 0:d8b9955d2b36 58
karpent 0:d8b9955d2b36 59
karpent 0:d8b9955d2b36 60 void RadarDemo::Render()
karpent 0:d8b9955d2b36 61 {
karpent 3:732f7144ec81 62 timer.RegisterScan();
karpent 0:d8b9955d2b36 63
karpent 0:d8b9955d2b36 64 // Calculate actual beam position
karpent 0:d8b9955d2b36 65 lastBeamAngle = currentBeamAngle;
karpent 3:732f7144ec81 66 currentBeamAngle = timer.GetBeamAngle();
karpent 0:d8b9955d2b36 67
karpent 4:66f13188c26b 68 CheckUserInput(window);
karpent 2:8db224cc1fcb 69
karpent 3:732f7144ec81 70 RK043FN48H* display = (RK043FN48H*)GetDisplay();
karpent 0:d8b9955d2b36 71 if(NeedsRedraw()) {
karpent 0:d8b9955d2b36 72
karpent 0:d8b9955d2b36 73 display->SetActiveLayer(Background);
karpent 0:d8b9955d2b36 74 display->Clear();
karpent 0:d8b9955d2b36 75
karpent 2:8db224cc1fcb 76 // Set draw color before calling draw method
karpent 2:8db224cc1fcb 77 display->SetDrawColor(0x80, 0, 0, 0xFF);
karpent 2:8db224cc1fcb 78 DrawRangeButtons(raSize);
karpent 2:8db224cc1fcb 79
karpent 0:d8b9955d2b36 80 display->SetDrawColor(0x40, 0x40, 0x40, 0xFF);
karpent 0:d8b9955d2b36 81 DrawMarkers();
karpent 0:d8b9955d2b36 82
karpent 0:d8b9955d2b36 83 display->SetDrawColor(0x80, 0x80, 0x80, 0xFF);
karpent 0:d8b9955d2b36 84 DrawBorder();
karpent 0:d8b9955d2b36 85
karpent 0:d8b9955d2b36 86 display->SetActiveLayer(Foreground);
karpent 0:d8b9955d2b36 87 _needsRedraw = false;
karpent 0:d8b9955d2b36 88 }
karpent 1:5e49b46de1b0 89
karpent 3:732f7144ec81 90 UpdateTargetsLocation(lastBeamAngle, currentBeamAngle, timer.GetRunningTime());
karpent 2:8db224cc1fcb 91
karpent 1:5e49b46de1b0 92 // Redraw foreground
karpent 0:d8b9955d2b36 93 display->Clear();
karpent 0:d8b9955d2b36 94 DrawTracks();
karpent 1:5e49b46de1b0 95
karpent 0:d8b9955d2b36 96 DrawRadarBeam(currentBeamAngle);
karpent 0:d8b9955d2b36 97 }
karpent 0:d8b9955d2b36 98
karpent 0:d8b9955d2b36 99
karpent 0:d8b9955d2b36 100 bool RadarDemo::IsRunning()
karpent 0:d8b9955d2b36 101 {
karpent 3:732f7144ec81 102 return demoTime > 0 ? timer.GetRunningTime() <= demoTime : true;
karpent 0:d8b9955d2b36 103 }
karpent 0:d8b9955d2b36 104
karpent 0:d8b9955d2b36 105
karpent 0:d8b9955d2b36 106 void RadarDemo::AddSampleTargets(int count)
karpent 0:d8b9955d2b36 107 {
karpent 0:d8b9955d2b36 108 const float minSpeed = 200; // [km/h]
karpent 0:d8b9955d2b36 109 const float maxSpeed = 800; // [km/h]
karpent 0:d8b9955d2b36 110 Target *target;
karpent 0:d8b9955d2b36 111
karpent 3:732f7144ec81 112 srand(timer.GetRunningTime());
karpent 0:d8b9955d2b36 113
karpent 0:d8b9955d2b36 114 for (int i = 0; i<count; i++) {
karpent 0:d8b9955d2b36 115 // Generate target parameters
karpent 0:d8b9955d2b36 116 float angle = 2 * M_PI * rand() / (float)RAND_MAX;
karpent 0:d8b9955d2b36 117 float range = GetMaxRange() * rand() / (float)RAND_MAX;
karpent 0:d8b9955d2b36 118 float speed = minSpeed + (maxSpeed - minSpeed) * rand() / (float)RAND_MAX;
karpent 0:d8b9955d2b36 119 float direction = 2 * M_PI * rand() / (float)RAND_MAX;
karpent 0:d8b9955d2b36 120
karpent 0:d8b9955d2b36 121 // Create a new target
karpent 0:d8b9955d2b36 122 target = new Target(i + 100, speed, direction);
karpent 0:d8b9955d2b36 123 target->SetLocationAngular(range, angle);
karpent 0:d8b9955d2b36 124
karpent 0:d8b9955d2b36 125 // Put target on the list
karpent 0:d8b9955d2b36 126 targetsList.push_back(*target);
karpent 0:d8b9955d2b36 127 }
karpent 0:d8b9955d2b36 128 }
karpent 0:d8b9955d2b36 129
karpent 0:d8b9955d2b36 130
karpent 0:d8b9955d2b36 131 void RadarDemo::UnvalidateBackground()
karpent 0:d8b9955d2b36 132 {
karpent 1:5e49b46de1b0 133 _needsRedraw = true;
karpent 0:d8b9955d2b36 134 }
karpent 0:d8b9955d2b36 135
karpent 0:d8b9955d2b36 136
karpent 0:d8b9955d2b36 137 bool RadarDemo::NeedsRedraw()
karpent 0:d8b9955d2b36 138 {
karpent 0:d8b9955d2b36 139 return _needsRedraw;
karpent 0:d8b9955d2b36 140 }
karpent 0:d8b9955d2b36 141
karpent 2:8db224cc1fcb 142
karpent 4:66f13188c26b 143 UserInputType RadarDemo::CheckUserInput(Window screen)
karpent 2:8db224cc1fcb 144 {
karpent 4:66f13188c26b 145 pPoint p;
karpent 4:66f13188c26b 146
karpent 4:66f13188c26b 147 // There is a timeout after pressing the button
karpent 4:66f13188c26b 148 if(TouchScreenDisabled())
karpent 4:66f13188c26b 149 return None;
karpent 4:66f13188c26b 150
karpent 4:66f13188c26b 151 if ((p = _ts->DetectTouch()) != NULL) {
karpent 2:8db224cc1fcb 152
karpent 4:66f13188c26b 153 if(p->X > (screen.x2-raSize) && p->Y < (screen.y1 + raSize)) {
karpent 4:66f13188c26b 154 if(ChangeRange(1)) {
karpent 2:8db224cc1fcb 155 UnvalidateBackground();
karpent 4:66f13188c26b 156 SetTouchScreenTimeout();
karpent 4:66f13188c26b 157
karpent 4:66f13188c26b 158 return ButtonPressed;
karpent 4:66f13188c26b 159 }
karpent 2:8db224cc1fcb 160 }
karpent 2:8db224cc1fcb 161
karpent 4:66f13188c26b 162 if(p->X > (screen.x2-raSize) && p->Y > (screen.y2-raSize)) {
karpent 4:66f13188c26b 163 if(ChangeRange(-1)) {
karpent 2:8db224cc1fcb 164 UnvalidateBackground();
karpent 4:66f13188c26b 165 SetTouchScreenTimeout();
karpent 4:66f13188c26b 166
karpent 4:66f13188c26b 167 return ButtonPressed;
karpent 4:66f13188c26b 168 }
karpent 2:8db224cc1fcb 169 }
karpent 2:8db224cc1fcb 170
karpent 4:66f13188c26b 171 SetCenter(p->X, p->Y);
karpent 4:66f13188c26b 172 UnvalidateBackground();
karpent 2:8db224cc1fcb 173
karpent 4:66f13188c26b 174 return SingleTouch;
karpent 2:8db224cc1fcb 175 }
karpent 2:8db224cc1fcb 176
karpent 4:66f13188c26b 177 return None;
karpent 2:8db224cc1fcb 178 }
karpent 4:66f13188c26b 179
karpent 4:66f13188c26b 180 bool RadarDemo::TouchScreenDisabled()
karpent 4:66f13188c26b 181 {
karpent 4:66f13188c26b 182 return _buttonPressTime + buttonPressTimeout > timer.GetRunningTime();
karpent 4:66f13188c26b 183 }
karpent 4:66f13188c26b 184
karpent 4:66f13188c26b 185 void RadarDemo::SetTouchScreenTimeout()
karpent 4:66f13188c26b 186 {
karpent 4:66f13188c26b 187 _buttonPressTime = timer.GetRunningTime();
karpent 4:66f13188c26b 188 }