ju nguyen / Mbed 2 deprecated SocialDistancingKeeper

Detected people approaching if the distance is < 6 feet then LEDs blinking RED otherwise LEDs light green.

Dependencies:   mbed X_NUCLEO_53L1A1_mbed WS2812

LED_WS2812/Pixel/PixelArray.cpp@0:ea8694e55809, 2020-09-29 (annotated)

Committer:
elab
Date:
Tue Sep 29 09:30:43 2020 +0000
Revision:
0:ea8694e55809
first version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
elab 0:ea8694e55809 1 #include "PixelArray.h"
elab 0:ea8694e55809 2
elab 0:ea8694e55809 3 PixelArray::PixelArray(int size)
elab 0:ea8694e55809 4 {
elab 0:ea8694e55809 5 pbufsize = size;
elab 0:ea8694e55809 6 pbuf = new int[pbufsize];
elab 0:ea8694e55809 7 SetAll(0x0); // initialise memory to zeros
elab 0:ea8694e55809 8
elab 0:ea8694e55809 9 }
elab 0:ea8694e55809 10
elab 0:ea8694e55809 11 PixelArray::~PixelArray()
elab 0:ea8694e55809 12 {
elab 0:ea8694e55809 13 delete[] pbuf;
elab 0:ea8694e55809 14 }
elab 0:ea8694e55809 15
elab 0:ea8694e55809 16 void PixelArray::SetAll(unsigned int value)
elab 0:ea8694e55809 17 {
elab 0:ea8694e55809 18 // for each pixel
elab 0:ea8694e55809 19 for (int i=0 ; i < pbufsize; i++) {
elab 0:ea8694e55809 20 __set_pixel(i,value);
elab 0:ea8694e55809 21 }
elab 0:ea8694e55809 22 }
elab 0:ea8694e55809 23
elab 0:ea8694e55809 24
elab 0:ea8694e55809 25 void PixelArray::SetAllI(unsigned char value)
elab 0:ea8694e55809 26 {
elab 0:ea8694e55809 27 // for each pixel
elab 0:ea8694e55809 28 for (int i=0 ; i < pbufsize; i++) {
elab 0:ea8694e55809 29 __set_pixel_component(i,3,value);
elab 0:ea8694e55809 30 }
elab 0:ea8694e55809 31 }
elab 0:ea8694e55809 32
elab 0:ea8694e55809 33
elab 0:ea8694e55809 34
elab 0:ea8694e55809 35 void PixelArray::SetAllR(unsigned char value)
elab 0:ea8694e55809 36 {
elab 0:ea8694e55809 37 // for each pixel
elab 0:ea8694e55809 38 for (int i=0 ; i < pbufsize; i++) {
elab 0:ea8694e55809 39 __set_pixel_component(i,2,value);
elab 0:ea8694e55809 40 }
elab 0:ea8694e55809 41 }
elab 0:ea8694e55809 42
elab 0:ea8694e55809 43 void PixelArray::SetAllG(unsigned char value)
elab 0:ea8694e55809 44 {
elab 0:ea8694e55809 45 // for each pixel
elab 0:ea8694e55809 46 for (int i=0 ; i < pbufsize; i++) {
elab 0:ea8694e55809 47 __set_pixel_component(i,1,value);
elab 0:ea8694e55809 48 }
elab 0:ea8694e55809 49 }
elab 0:ea8694e55809 50
elab 0:ea8694e55809 51 void PixelArray::SetAllB(unsigned char value)
elab 0:ea8694e55809 52 {
elab 0:ea8694e55809 53 // for each pixel
elab 0:ea8694e55809 54 for (int i=0 ; i < pbufsize; i++) {
elab 0:ea8694e55809 55 __set_pixel_component(i,0,value);
elab 0:ea8694e55809 56 }
elab 0:ea8694e55809 57 }
elab 0:ea8694e55809 58
elab 0:ea8694e55809 59
elab 0:ea8694e55809 60
elab 0:ea8694e55809 61
elab 0:ea8694e55809 62
elab 0:ea8694e55809 63 void PixelArray::Set(int i, unsigned int value)
elab 0:ea8694e55809 64 {
elab 0:ea8694e55809 65 if ((i >= 0) && (i < pbufsize)) {
elab 0:ea8694e55809 66 __set_pixel(i,value);
elab 0:ea8694e55809 67 }
elab 0:ea8694e55809 68 }
elab 0:ea8694e55809 69
elab 0:ea8694e55809 70
elab 0:ea8694e55809 71
elab 0:ea8694e55809 72 void PixelArray::SetI(int i, unsigned char value)
elab 0:ea8694e55809 73 {
elab 0:ea8694e55809 74 if ((i >= 0) && (i < pbufsize)) {
elab 0:ea8694e55809 75 __set_pixel_component(i,3,value);
elab 0:ea8694e55809 76 }
elab 0:ea8694e55809 77 }
elab 0:ea8694e55809 78
elab 0:ea8694e55809 79
elab 0:ea8694e55809 80 void PixelArray::SetR(int i, unsigned char value)
elab 0:ea8694e55809 81 {
elab 0:ea8694e55809 82 if ((i >= 0) && (i < pbufsize)) {
elab 0:ea8694e55809 83 __set_pixel_component(i,2,value);
elab 0:ea8694e55809 84 }
elab 0:ea8694e55809 85 }
elab 0:ea8694e55809 86
elab 0:ea8694e55809 87 void PixelArray::SetG(int i, unsigned char value)
elab 0:ea8694e55809 88 {
elab 0:ea8694e55809 89 if ((i >= 0) && (i < pbufsize)) {
elab 0:ea8694e55809 90 __set_pixel_component(i,1,value);
elab 0:ea8694e55809 91 }
elab 0:ea8694e55809 92 }
elab 0:ea8694e55809 93
elab 0:ea8694e55809 94 void PixelArray::SetB(int i, unsigned char value)
elab 0:ea8694e55809 95 {
elab 0:ea8694e55809 96 if ((i >= 0) && (i < pbufsize)) {
elab 0:ea8694e55809 97 __set_pixel_component(i,0,value);
elab 0:ea8694e55809 98 }
elab 0:ea8694e55809 99 }
elab 0:ea8694e55809 100
elab 0:ea8694e55809 101
elab 0:ea8694e55809 102 unsigned int PixelArray::Get(int i)
elab 0:ea8694e55809 103 {
elab 0:ea8694e55809 104 return __get_pixel(i);
elab 0:ea8694e55809 105 }
elab 0:ea8694e55809 106
elab 0:ea8694e55809 107 unsigned int PixelArray::GetI(int i)
elab 0:ea8694e55809 108 {
elab 0:ea8694e55809 109 return __get_pixel_component(i,3);
elab 0:ea8694e55809 110 }
elab 0:ea8694e55809 111
elab 0:ea8694e55809 112 unsigned int PixelArray::GetR(int i)
elab 0:ea8694e55809 113 {
elab 0:ea8694e55809 114 return __get_pixel_component(i,2);
elab 0:ea8694e55809 115 }
elab 0:ea8694e55809 116
elab 0:ea8694e55809 117 unsigned int PixelArray::GetG(int i)
elab 0:ea8694e55809 118 {
elab 0:ea8694e55809 119 return __get_pixel_component(i,1);
elab 0:ea8694e55809 120 }
elab 0:ea8694e55809 121
elab 0:ea8694e55809 122 unsigned int PixelArray::GetB(int i)
elab 0:ea8694e55809 123 {
elab 0:ea8694e55809 124 return __get_pixel_component(i,0);
elab 0:ea8694e55809 125 }
elab 0:ea8694e55809 126
elab 0:ea8694e55809 127
elab 0:ea8694e55809 128
elab 0:ea8694e55809 129 int* PixelArray::getBuf()
elab 0:ea8694e55809 130 {
elab 0:ea8694e55809 131 return (pbuf);
elab 0:ea8694e55809 132 }
elab 0:ea8694e55809 133
elab 0:ea8694e55809 134
elab 0:ea8694e55809 135 // set either the I,R,G,B value of specific pixel channel
elab 0:ea8694e55809 136 void PixelArray::__set_pixel_component(int index, int channel, int value)
elab 0:ea8694e55809 137 {
elab 0:ea8694e55809 138
elab 0:ea8694e55809 139 // AND with 0x00 shifted to the right location to clear the bits
elab 0:ea8694e55809 140 pbuf[index] &= ~(0xFF << (8 * channel));
elab 0:ea8694e55809 141
elab 0:ea8694e55809 142 // Set the bits with an OR
elab 0:ea8694e55809 143 pbuf[index] |= (value << (8 * channel));
elab 0:ea8694e55809 144 }
elab 0:ea8694e55809 145
elab 0:ea8694e55809 146
elab 0:ea8694e55809 147 // set either the I,R,G,B value of specific pixel channel
elab 0:ea8694e55809 148 void PixelArray::__set_pixel(int index, int value)
elab 0:ea8694e55809 149 {
elab 0:ea8694e55809 150 // AND with 0x00 shifted to the right location to clear the bits
elab 0:ea8694e55809 151 pbuf[index] = value;
elab 0:ea8694e55809 152 }
elab 0:ea8694e55809 153
elab 0:ea8694e55809 154
elab 0:ea8694e55809 155 // get specific pixel
elab 0:ea8694e55809 156 int PixelArray::__get_pixel(int index)
elab 0:ea8694e55809 157 {
elab 0:ea8694e55809 158 if ((index >= 0) && (index < pbufsize)) {
elab 0:ea8694e55809 159 return pbuf[index];
elab 0:ea8694e55809 160 } else {
elab 0:ea8694e55809 161 return 0;
elab 0:ea8694e55809 162 }
elab 0:ea8694e55809 163 }
elab 0:ea8694e55809 164
elab 0:ea8694e55809 165
elab 0:ea8694e55809 166 // get specific pixel
elab 0:ea8694e55809 167 int PixelArray::__get_pixel_component(int index, int channel)
elab 0:ea8694e55809 168 {
elab 0:ea8694e55809 169 // AND with 0xFF shifted to the right location to get the bits
elab 0:ea8694e55809 170 return ( (__get_pixel(index) & (0xFF << (8 * channel))) >> (8*channel) );
elab 0:ea8694e55809 171 }
elab 0:ea8694e55809 172
elab 0:ea8694e55809 173