EmbeddedArtists AB / Mbed 2 deprecated lpc4088_ebb_dm_40pin_spi

Example of using the DM-TFT18-101 display

Dependencies:   DmTftLibrary mbed

Fork of dm_bubbles by Display Module

BubbleDemo.cpp@4:e9c7ecc37061, 2014-10-01 (annotated)

Committer:
embeddedartists
Date:
Wed Oct 01 11:03:19 2014 +0000
Revision:
4:e9c7ecc37061
Parent:
0:70db0a4adfce 
Cleanup

Who changed what in which revision?

UserRevisionLine numberNew contents of line
displaymodule 0:70db0a4adfce 1 /******************************************************************************
displaymodule 0:70db0a4adfce 2 * Includes
displaymodule 0:70db0a4adfce 3 *****************************************************************************/
displaymodule 0:70db0a4adfce 4
displaymodule 0:70db0a4adfce 5 #include "mbed.h"
displaymodule 0:70db0a4adfce 6
displaymodule 0:70db0a4adfce 7 #include "BubbleDemo.h"
displaymodule 0:70db0a4adfce 8 #include "DmTftBase.h"
displaymodule 0:70db0a4adfce 9 #include "wchar.h"
displaymodule 0:70db0a4adfce 10
displaymodule 0:70db0a4adfce 11 /******************************************************************************
displaymodule 0:70db0a4adfce 12 * Typedefs and defines
displaymodule 0:70db0a4adfce 13 *****************************************************************************/
displaymodule 0:70db0a4adfce 14
displaymodule 0:70db0a4adfce 15 #define PI 3.1415926535897932384626433832795
displaymodule 0:70db0a4adfce 16
displaymodule 0:70db0a4adfce 17 /* Red color mask, 565 mode */
displaymodule 0:70db0a4adfce 18 #define REDMASK 0xF800
displaymodule 0:70db0a4adfce 19 /* Red shift value, 565 mode */
displaymodule 0:70db0a4adfce 20 #define REDSHIFT 11
displaymodule 0:70db0a4adfce 21 /* Green color mask, 565 mode */
displaymodule 0:70db0a4adfce 22 #define GREENMASK 0x07E0
displaymodule 0:70db0a4adfce 23 /* Green shift value, 565 mode */
displaymodule 0:70db0a4adfce 24 #define GREENSHIFT 5
displaymodule 0:70db0a4adfce 25 /* Blue color mask, 565 mode */
displaymodule 0:70db0a4adfce 26 #define BLUEMASK 0x001F
displaymodule 0:70db0a4adfce 27 /* Blue shift value, 565 mode */
displaymodule 0:70db0a4adfce 28 #define BLUESHIFT 0
displaymodule 0:70db0a4adfce 29
displaymodule 0:70db0a4adfce 30 /* Number of colors in 565 mode */
displaymodule 0:70db0a4adfce 31 #define NUM_COLORS 65536
displaymodule 0:70db0a4adfce 32 /* Number of red colors in 565 mode */
displaymodule 0:70db0a4adfce 33 #define RED_COLORS 0x20
displaymodule 0:70db0a4adfce 34 /* Number of green colors in 565 mode */
displaymodule 0:70db0a4adfce 35 #define GREEN_COLORS 0x40
displaymodule 0:70db0a4adfce 36 /* Number of blue colors in 565 mode */
displaymodule 0:70db0a4adfce 37 #define BLUE_COLORS 0x20
displaymodule 0:70db0a4adfce 38
displaymodule 0:70db0a4adfce 39 /******************************************************************************
displaymodule 0:70db0a4adfce 40 * Local variables
displaymodule 0:70db0a4adfce 41 *****************************************************************************/
displaymodule 0:70db0a4adfce 42
displaymodule 0:70db0a4adfce 43
displaymodule 0:70db0a4adfce 44 /******************************************************************************
displaymodule 0:70db0a4adfce 45 * External variables
displaymodule 0:70db0a4adfce 46 *****************************************************************************/
displaymodule 0:70db0a4adfce 47
displaymodule 0:70db0a4adfce 48
displaymodule 0:70db0a4adfce 49 /******************************************************************************
displaymodule 0:70db0a4adfce 50 * Local functions
displaymodule 0:70db0a4adfce 51 *****************************************************************************/
displaymodule 0:70db0a4adfce 52
displaymodule 0:70db0a4adfce 53
displaymodule 0:70db0a4adfce 54 void BubbleDemo::initialize() {
displaymodule 0:70db0a4adfce 55 float radian;
displaymodule 0:70db0a4adfce 56 const float phase1 = 2 * PI / 3;
displaymodule 0:70db0a4adfce 57 const float phase2 = 4 * PI / 3;
displaymodule 0:70db0a4adfce 58
displaymodule 0:70db0a4adfce 59 for(i = 0; i < NumBalls; i++) {
displaymodule 0:70db0a4adfce 60 x[i] = this->windowX / 2;
displaymodule 0:70db0a4adfce 61 y[i] = this->windowY / 2;
displaymodule 0:70db0a4adfce 62 r[i] = i * 2 + 10;
displaymodule 0:70db0a4adfce 63
displaymodule 0:70db0a4adfce 64 oldX[i] = x[i];
displaymodule 0:70db0a4adfce 65 oldY[i] = y[i];
displaymodule 0:70db0a4adfce 66
displaymodule 0:70db0a4adfce 67 velX[i] = 1;
displaymodule 0:70db0a4adfce 68 velY[i] = 1;
displaymodule 0:70db0a4adfce 69
displaymodule 0:70db0a4adfce 70 radian = i * 2 * PI / NumBalls;
displaymodule 0:70db0a4adfce 71 red[i] = cos(radian) * RED_COLORS / 2 + (RED_COLORS / 2 - 1);
displaymodule 0:70db0a4adfce 72 green[i] = cos(radian + phase2) * GREEN_COLORS / 2 + (GREEN_COLORS / 2 - 1);
displaymodule 0:70db0a4adfce 73 blue[i] = cos(radian + phase1) * BLUE_COLORS / 2 + (BLUE_COLORS / 2 - 1);
displaymodule 0:70db0a4adfce 74 }
displaymodule 0:70db0a4adfce 75 }
displaymodule 0:70db0a4adfce 76
displaymodule 0:70db0a4adfce 77 void BubbleDemo::collision() {
displaymodule 0:70db0a4adfce 78 float disX = x[j] - x[i];
displaymodule 0:70db0a4adfce 79 float disY = y[j] - y[i];
displaymodule 0:70db0a4adfce 80 float d2 = disX * disX + disY * disY;
displaymodule 0:70db0a4adfce 81
displaymodule 0:70db0a4adfce 82 if(d2 != 0) {
displaymodule 0:70db0a4adfce 83 float rij = r[i] + r[j];
displaymodule 0:70db0a4adfce 84 float rij2 = rij * rij;
displaymodule 0:70db0a4adfce 85
displaymodule 0:70db0a4adfce 86 if(d2 < rij2) {
displaymodule 0:70db0a4adfce 87 float ii = (disX * velX[i] + disY * velY[i]) / d2;
displaymodule 0:70db0a4adfce 88 float ji = (disX * velY[i] - disY * velX[i]) / d2;
displaymodule 0:70db0a4adfce 89 float ij = (disX * velX[j] + disY * velY[j]) / d2;
displaymodule 0:70db0a4adfce 90 float jj = (disX * velY[j] - disY * velX[j]) / d2;
displaymodule 0:70db0a4adfce 91 float ratio = rij / sqrt(d2);
displaymodule 0:70db0a4adfce 92
displaymodule 0:70db0a4adfce 93 velX[i] = ij * disX - ii * disY;
displaymodule 0:70db0a4adfce 94 velY[i] = ij * disY + ii * disX;
displaymodule 0:70db0a4adfce 95 velX[j] = ji * disX - jj * disY;
displaymodule 0:70db0a4adfce 96 velY[j] = ji * disY + jj * disX;
displaymodule 0:70db0a4adfce 97
displaymodule 0:70db0a4adfce 98 disX *= (ratio - 1) / 2;
displaymodule 0:70db0a4adfce 99 disY *= (ratio - 1) / 2;
displaymodule 0:70db0a4adfce 100
displaymodule 0:70db0a4adfce 101 x[j] += disX;
displaymodule 0:70db0a4adfce 102 y[j] += disY;
displaymodule 0:70db0a4adfce 103 x[i] -= disX;
displaymodule 0:70db0a4adfce 104 y[i] -= disY;
displaymodule 0:70db0a4adfce 105 }
displaymodule 0:70db0a4adfce 106 }
displaymodule 0:70db0a4adfce 107 }
displaymodule 0:70db0a4adfce 108
displaymodule 0:70db0a4adfce 109 void BubbleDemo::borders() {
displaymodule 0:70db0a4adfce 110 if(x[i] >= this->windowX - r[i] - 1) {
displaymodule 0:70db0a4adfce 111 x[i] = this->windowX - r[i] - 1;
displaymodule 0:70db0a4adfce 112 velX[i] = -velX[i];
displaymodule 0:70db0a4adfce 113 } else if(x[i] <= r[i]) {
displaymodule 0:70db0a4adfce 114 x[i] = r[i];
displaymodule 0:70db0a4adfce 115 velX[i] = -velX[i];
displaymodule 0:70db0a4adfce 116 }
displaymodule 0:70db0a4adfce 117
displaymodule 0:70db0a4adfce 118 if(y[i] >= this->windowY - r[i] - 1) {
displaymodule 0:70db0a4adfce 119 y[i] = this->windowY - r[i] - 1;
displaymodule 0:70db0a4adfce 120 velY[i] = -velY[i];
displaymodule 0:70db0a4adfce 121 } else if(y[i] <= r[i]) {
displaymodule 0:70db0a4adfce 122 y[i] = r[i];
displaymodule 0:70db0a4adfce 123 velY[i] = -velY[i];
displaymodule 0:70db0a4adfce 124 }
displaymodule 0:70db0a4adfce 125 }
displaymodule 0:70db0a4adfce 126
displaymodule 0:70db0a4adfce 127 void BubbleDemo::draw() {
displaymodule 0:70db0a4adfce 128 tft->drawCircle(oldX[i], oldY[i], r[i], BLACK);
displaymodule 0:70db0a4adfce 129 tft->drawCircle(x[i], y[i], r[i], (red[i] << REDSHIFT) + (green[i] << GREENSHIFT) + (blue[i] << BLUESHIFT));
displaymodule 0:70db0a4adfce 130
displaymodule 0:70db0a4adfce 131 oldX[i] = x[i];
displaymodule 0:70db0a4adfce 132 oldY[i] = y[i];
displaymodule 0:70db0a4adfce 133 }
displaymodule 0:70db0a4adfce 134
displaymodule 0:70db0a4adfce 135
displaymodule 0:70db0a4adfce 136 /******************************************************************************
displaymodule 0:70db0a4adfce 137 * Public functions
displaymodule 0:70db0a4adfce 138 *****************************************************************************/
displaymodule 0:70db0a4adfce 139
displaymodule 0:70db0a4adfce 140 BubbleDemo::BubbleDemo(DmTftBase* display, uint16_t dispWidth, uint16_t dispHeight) {
displaymodule 0:70db0a4adfce 141
displaymodule 0:70db0a4adfce 142 this->windowX = dispWidth;
displaymodule 0:70db0a4adfce 143 this->windowY = dispHeight;
displaymodule 0:70db0a4adfce 144 tft = display;
displaymodule 0:70db0a4adfce 145
displaymodule 0:70db0a4adfce 146 initialize();
displaymodule 0:70db0a4adfce 147 }
displaymodule 0:70db0a4adfce 148
displaymodule 0:70db0a4adfce 149 void BubbleDemo::run(uint32_t loops, uint32_t delayMs) {
displaymodule 0:70db0a4adfce 150
displaymodule 0:70db0a4adfce 151 tft->clearScreen();
displaymodule 0:70db0a4adfce 152
displaymodule 0:70db0a4adfce 153 for(int32_t n=0;n<loops;n++) {
displaymodule 0:70db0a4adfce 154
displaymodule 0:70db0a4adfce 155 for(i = 0; i < NumBalls; i++) {
displaymodule 0:70db0a4adfce 156 x[i] += velX[i];
displaymodule 0:70db0a4adfce 157 y[i] += velY[i];
displaymodule 0:70db0a4adfce 158
displaymodule 0:70db0a4adfce 159 for(j = i + 1; j < NumBalls; j++)
displaymodule 0:70db0a4adfce 160 collision();
displaymodule 0:70db0a4adfce 161
displaymodule 0:70db0a4adfce 162 borders();
displaymodule 0:70db0a4adfce 163
displaymodule 0:70db0a4adfce 164 if((int)x[i] != (int)oldX[i] || (int)y[i] != (int)oldY[i])
displaymodule 0:70db0a4adfce 165 draw();
displaymodule 0:70db0a4adfce 166 }
displaymodule 0:70db0a4adfce 167
displaymodule 0:70db0a4adfce 168 wait_ms(delayMs);
displaymodule 0:70db0a4adfce 169 }
displaymodule 0:70db0a4adfce 170 }