Dominic Kay / Display

This class encapsulates all the algorithms required for the displaying strings and time dependent patterns on the lcd.

Dependents:   200943412_QuickClick

Display.cpp@2:f0ecd70c9ea2, 2017-04-11 (annotated)

Committer:
domkay97
Date:
Tue Apr 11 22:42:33 2017 +0000
Revision:
2:f0ecd70c9ea2
Parent:
1:41a1c20a2056
Child:
4:b74041216336
Working Circle

Who changed what in which revision?

UserRevisionLine numberNew contents of line
domkay97 0:dd78eca4b004 1 #include "Display.h"
domkay97 0:dd78eca4b004 2 #include "N5110.h"
domkay97 1:41a1c20a2056 3 #include "Gamepad.h"
domkay97 1:41a1c20a2056 4 #include <math.h>
domkay97 0:dd78eca4b004 5
domkay97 0:dd78eca4b004 6 Display::Display()
domkay97 0:dd78eca4b004 7 {
domkay97 0:dd78eca4b004 8 _h = 0;
domkay97 2:f0ecd70c9ea2 9 _w = 0.4;
domkay97 0:dd78eca4b004 10 _a = 0;
domkay97 1:41a1c20a2056 11 _A = 0;
domkay97 1:41a1c20a2056 12 _v = 0;
domkay97 1:41a1c20a2056 13 x = 0;
domkay97 1:41a1c20a2056 14 y = 0;
domkay97 1:41a1c20a2056 15 x0 = 0;
domkay97 1:41a1c20a2056 16 y0 = 0;
domkay97 0:dd78eca4b004 17 }
domkay97 0:dd78eca4b004 18
domkay97 0:dd78eca4b004 19 Display::~Display()
domkay97 0:dd78eca4b004 20 {
domkay97 0:dd78eca4b004 21
domkay97 0:dd78eca4b004 22 }
domkay97 0:dd78eca4b004 23 void Display::init()
domkay97 0:dd78eca4b004 24 {
domkay97 0:dd78eca4b004 25
domkay97 0:dd78eca4b004 26 _h = 0;
domkay97 2:f0ecd70c9ea2 27 _w = 0.4;
domkay97 0:dd78eca4b004 28 _a = 0;
domkay97 1:41a1c20a2056 29 _A = 0;
domkay97 1:41a1c20a2056 30 _v = 0;
domkay97 1:41a1c20a2056 31 x = 0;
domkay97 1:41a1c20a2056 32 y = 0;
domkay97 1:41a1c20a2056 33 x0 = 0;
domkay97 1:41a1c20a2056 34 y0 = 0;
domkay97 0:dd78eca4b004 35 }
domkay97 0:dd78eca4b004 36
domkay97 0:dd78eca4b004 37 void Display::drawCircle(N5110 &lcd)
domkay97 1:41a1c20a2056 38 {
domkay97 2:f0ecd70c9ea2 39 lcd.clear();
domkay97 1:41a1c20a2056 40 random_instruction(lcd);
domkay97 2:f0ecd70c9ea2 41 Circle(lcd);
domkay97 2:f0ecd70c9ea2 42 calculateWait();
domkay97 2:f0ecd70c9ea2 43 _h++;
domkay97 2:f0ecd70c9ea2 44 lcd.clear();
domkay97 2:f0ecd70c9ea2 45 lcd.refresh();
domkay97 0:dd78eca4b004 46 }
domkay97 0:dd78eca4b004 47
domkay97 0:dd78eca4b004 48 void Display::calculateWait()
domkay97 0:dd78eca4b004 49 {
domkay97 2:f0ecd70c9ea2 50 _w = 0.4*exp(-0.03465*_h);
domkay97 1:41a1c20a2056 51 }
domkay97 2:f0ecd70c9ea2 52
domkay97 1:41a1c20a2056 53 void Display::random_instruction(N5110 &lcd) {
domkay97 1:41a1c20a2056 54 _v = rand() % 4 + 1;
domkay97 1:41a1c20a2056 55 if (_v == 1){
domkay97 2:f0ecd70c9ea2 56 lcd.printChar('A',42,3); }
domkay97 1:41a1c20a2056 57 else if (_v == 2){
domkay97 2:f0ecd70c9ea2 58 lcd.printChar('X',42,3); }
domkay97 1:41a1c20a2056 59 else if (_v == 3){
domkay97 2:f0ecd70c9ea2 60 lcd.printChar('Y',42,3); }
domkay97 1:41a1c20a2056 61 else {
domkay97 2:f0ecd70c9ea2 62 lcd.printChar('B',42,3); }
domkay97 1:41a1c20a2056 63 lcd.refresh();
domkay97 1:41a1c20a2056 64 }
domkay97 1:41a1c20a2056 65
domkay97 1:41a1c20a2056 66 // function to draw circle
domkay97 1:41a1c20a2056 67 void Display::Circle(N5110 &lcd)
domkay97 1:41a1c20a2056 68 {
domkay97 1:41a1c20a2056 69 // from http://en.wikipedia.org/wiki/Midpoint_circle_algorithm
domkay97 1:41a1c20a2056 70
domkay97 1:41a1c20a2056 71
domkay97 1:41a1c20a2056 72
domkay97 1:41a1c20a2056 73 for (int a = 0; a < 8; ++a)
domkay97 1:41a1c20a2056 74 {
domkay97 1:41a1c20a2056 75 Drawarc(lcd, a);
domkay97 1:41a1c20a2056 76 lcd.refresh();
domkay97 2:f0ecd70c9ea2 77 lcd.setBrightness(1.0);
domkay97 2:f0ecd70c9ea2 78 wait(_w);
domkay97 2:f0ecd70c9ea2 79 lcd.setBrightness(0.0);
domkay97 2:f0ecd70c9ea2 80 wait(_w);
domkay97 2:f0ecd70c9ea2 81 }
domkay97 0:dd78eca4b004 82
domkay97 1:41a1c20a2056 83 }
domkay97 1:41a1c20a2056 84
domkay97 1:41a1c20a2056 85 void Display::Drawarc(N5110 &lcd, int a) {
domkay97 1:41a1c20a2056 86 x = 20;
domkay97 1:41a1c20a2056 87 y = 0;
domkay97 1:41a1c20a2056 88
domkay97 1:41a1c20a2056 89 int a1;
domkay97 1:41a1c20a2056 90 int b1;
domkay97 1:41a1c20a2056 91 radiusError = 1-x;
domkay97 1:41a1c20a2056 92 x0 = 42;
domkay97 1:41a1c20a2056 93 y0 = 24;
domkay97 0:dd78eca4b004 94
domkay97 1:41a1c20a2056 95 while(x >= y) {
domkay97 1:41a1c20a2056 96 // if transparent, just draw outline
domkay97 1:41a1c20a2056 97 switch(a) {
domkay97 1:41a1c20a2056 98 case 0 : {a1 = y;
domkay97 1:41a1c20a2056 99 b1 = x * -1;
domkay97 1:41a1c20a2056 100 break;
domkay97 1:41a1c20a2056 101 }
domkay97 1:41a1c20a2056 102 case 1 : {a1 = x;
domkay97 1:41a1c20a2056 103 b1 = y * -1;
domkay97 1:41a1c20a2056 104 break;
domkay97 1:41a1c20a2056 105 }
domkay97 1:41a1c20a2056 106 case 2 : {a1 = x;
domkay97 1:41a1c20a2056 107 b1 = y;
domkay97 1:41a1c20a2056 108 break;
domkay97 1:41a1c20a2056 109 }
domkay97 1:41a1c20a2056 110 case 3 : {a1 = y;
domkay97 1:41a1c20a2056 111 b1 = x;
domkay97 1:41a1c20a2056 112 break;
domkay97 1:41a1c20a2056 113 }
domkay97 1:41a1c20a2056 114 case 4 : {a1 = y * -1;
domkay97 1:41a1c20a2056 115 b1 = x;
domkay97 1:41a1c20a2056 116 break;
domkay97 1:41a1c20a2056 117 }
domkay97 1:41a1c20a2056 118 case 5 : {a1 = x * -1;
domkay97 1:41a1c20a2056 119 b1 = y;
domkay97 1:41a1c20a2056 120 break;
domkay97 1:41a1c20a2056 121 }
domkay97 1:41a1c20a2056 122 case 6 : {a1 = x * -1;
domkay97 1:41a1c20a2056 123 b1 = y * -1;
domkay97 1:41a1c20a2056 124 break;
domkay97 1:41a1c20a2056 125 }
domkay97 1:41a1c20a2056 126 case 7 : {a1 = y * -1;
domkay97 1:41a1c20a2056 127 b1 = x * -1;
domkay97 1:41a1c20a2056 128 break;
domkay97 1:41a1c20a2056 129 }
domkay97 1:41a1c20a2056 130 default : { a1 = x;
domkay97 1:41a1c20a2056 131 b1 = y * -1;
domkay97 1:41a1c20a2056 132 break;
domkay97 1:41a1c20a2056 133 }
domkay97 1:41a1c20a2056 134 }
domkay97 1:41a1c20a2056 135
domkay97 1:41a1c20a2056 136
domkay97 1:41a1c20a2056 137
domkay97 1:41a1c20a2056 138 lcd.setPixel( a1 + x0, b1 + y0);
domkay97 1:41a1c20a2056 139
domkay97 1:41a1c20a2056 140 // lcd.setPixel(-x + x0, y + y0);
domkay97 1:41a1c20a2056 141 // lcd.setPixel( y + x0, x + y0);
domkay97 1:41a1c20a2056 142 // lcd.setPixel(-y + x0, x + y0);
domkay97 1:41a1c20a2056 143 // lcd.setPixel(-y + x0, -x + y0);
domkay97 1:41a1c20a2056 144 // lcd.setPixel( y + x0, -x + y0);
domkay97 1:41a1c20a2056 145 // lcd.setPixel( x + x0, -y + y0);
domkay97 1:41a1c20a2056 146 /// lcd.setPixel(-x + x0, -y + y0);
domkay97 1:41a1c20a2056 147
domkay97 1:41a1c20a2056 148
domkay97 1:41a1c20a2056 149
domkay97 1:41a1c20a2056 150 y++;
domkay97 1:41a1c20a2056 151
domkay97 1:41a1c20a2056 152
domkay97 1:41a1c20a2056 153 if (radiusError<0) {
domkay97 1:41a1c20a2056 154 radiusError += 2 * y + 1;
domkay97 1:41a1c20a2056 155 } else {
domkay97 1:41a1c20a2056 156 x--;
domkay97 1:41a1c20a2056 157 radiusError += 2 * (y - x) + 1;
domkay97 1:41a1c20a2056 158 }
domkay97 1:41a1c20a2056 159
domkay97 1:41a1c20a2056 160 }
domkay97 1:41a1c20a2056 161 }