// Demo based on:
// UTFT_Demo by Henning Karlsen
// web: http://www.henningkarlsen.com/electronics
/*

 The delay between tests is set to 0. The tests run so fast you will need to
 change the WAIT value below to see what is being plotted!
 
 This sketch uses the GLCD and font 2 only.

 Make sure all the required fonts are loaded by editting the
 User_Setup.h file in the TFT_eSPI library folder.

  #########################################################################
  ###### DON'T FORGET TO UPDATE THE User_Setup.h FILE IN THE LIBRARY ######
  ######            TO SELECT THE FONTS YOU USE, SEE ABOVE           ######
  #########################################################################
 */

// Delay between demo pages
#define WAIT 0 // Delay between tests, set to 0 to demo speed, 2000 to see what it does!

#define CENTRE 240

#include <TFT_eSPI.h> // Hardware-specific library
#include <SPI.h>

TFT_eSPI tft = TFT_eSPI();                   // Invoke custom library with default width and height

#define TFT_GREY 0x7BEF

uint32_t runTime = 0;

void setup()
{
  randomSeed(analogRead(0));
  Serial.begin(38400);
// Setup the LCD
  tft.init();
  tft.setRotation(1);
}

void loop()
{
  int buf[478];
  int x, x2;
  int y, y2;
  int r;

  runTime = millis();
// Clear the screen and draw the frame
  tft.fillScreen(TFT_BLACK);

  tft.fillRect(0, 0, 480, 13, TFT_RED);

  tft.fillRect(0, 305, 480, 320, TFT_GREY);
  tft.setTextColor(TFT_BLACK,TFT_RED);

  tft.drawCentreString("* TFT_eSPI *", CENTRE, 3, 1);
  tft.setTextColor(TFT_YELLOW,TFT_GREY);
  tft.drawCentreString("Adapted by Bodmer", CENTRE, 309,1);

  tft.drawRect(0, 14, 479, 305-14, TFT_BLUE);

// Draw crosshairs
  tft.drawLine(239, 15, 239, 304, TFT_BLUE);
  tft.drawLine(1, 159, 478, 159, TFT_BLUE);
  for (int i=9; i<470; i+=10)
    tft.drawLine(i, 157, i, 161, TFT_BLUE);
  for (int i=19; i<220; i+=10)
    tft.drawLine(237, i, 241, i, TFT_BLUE);

// Draw sin-, cos- and tan-lines  
  tft.setTextColor(TFT_CYAN);
  tft.drawString("Sin", 5, 15,2);
  for (int i=1; i<478; i++)
  {
    tft.drawPixel(i,159+(sin(((i*1.13)*3.14)/180)*95),TFT_CYAN);
  }
  
  tft.setTextColor(TFT_RED);
  tft.drawString("Cos", 5, 30,2);
  for (int i=1; i<478; i++)
  {
    tft.drawPixel(i,159+(cos(((i*1.13)*3.14)/180)*95),TFT_RED);
  }

  tft.setTextColor(TFT_YELLOW);
  tft.drawString("Tan", 5, 45,2);
  for (int i=1; i<478; i++)
  {
    tft.drawPixel(i,159+(tan(((i*1.13)*3.14)/180)),TFT_YELLOW);
  }

  delay(WAIT);

  tft.fillRect(1,15,478-1,304-15,TFT_BLACK);
  tft.drawLine(239, 15, 239, 304,TFT_BLUE);
  tft.drawLine(1, 159, 478, 159,TFT_BLUE);

// Draw a moving sinewave
int col = 0;
  x=1;
  for (int i=1; i<(477*15); i++) 
  {
    x++;
    if (x==478)
      x=1;
    if (i>478)
    {
      if ((x==239)||(buf[x-1]==159))
        col = TFT_BLUE;
      else
        tft.drawPixel(x,buf[x-1],TFT_BLACK);
    }
    y=159+(sin(((i*0.7)*3.14)/180)*(90-(i / 100)));
    tft.drawPixel(x,y, TFT_BLUE);
    buf[x-1]=y;
  }

  delay(WAIT);
  
  tft.fillRect(1,15,478-1,304-15,TFT_BLACK);

// Draw some filled rectangles
  for (int i=1; i<6; i++)
  {
    switch (i)
    {
      case 1:
        col = TFT_MAGENTA;
        break;
      case 2:
        col = TFT_RED;
        break;
      case 3:
        col = TFT_GREEN;
        break;
      case 4:
        col = TFT_BLUE;
        break;
      case 5:
        col = TFT_YELLOW;
        break;
    }
    tft.fillRect(150+(i*20), 70+(i*20), 60, 60,col);
  }

  delay(WAIT);
  
  tft.fillRect(1,15,478-1,304-15,TFT_BLACK);

// Draw some filled, rounded rectangles
  for (int i=1; i<6; i++)
  {
    switch (i)
    {
      case 1:
        col = TFT_MAGENTA;
        break;
      case 2:
        col = TFT_RED;
        break;
      case 3:
        col = TFT_GREEN;
        break;
      case 4:
        col = TFT_BLUE;
        break;
      case 5:
        col = TFT_YELLOW;
        break;
    }
    tft.fillRoundRect(270-(i*20), 70+(i*20), 60, 60, 3, col);
  }
  
  delay(WAIT);
  
  tft.fillRect(1,15,478-1,304-15,TFT_BLACK);

// Draw some filled circles
  for (int i=1; i<6; i++)
  {
    switch (i)
    {
      case 1:
        col = TFT_MAGENTA;
        break;
      case 2:
        col = TFT_RED;
        break;
      case 3:
        col = TFT_GREEN;
        break;
      case 4:
        col = TFT_BLUE;
        break;
      case 5:
        col = TFT_YELLOW;
        break;
    }
    tft.fillCircle(180+(i*20),100+(i*20), 30,col);
  }
  
  delay(WAIT);
  
  tft.fillRect(1,15,478-1,304-15,TFT_BLACK);

// Draw some lines in a pattern

  for (int i=15; i<304; i+=5)
  {
    tft.drawLine(1, i, (i*1.6)-10, 303, TFT_RED);
  }

  for (int i=304; i>15; i-=5)
  {
    tft.drawLine(477, i, (i*1.6)-11, 15, TFT_RED);
  }

  for (int i=304; i>15; i-=5)
  {
    tft.drawLine(1, i, 491-(i*1.6), 15, TFT_CYAN);
  }

  for (int i=15; i<304; i+=5)
  {
    tft.drawLine(477, i, 490-(i*1.6), 303, TFT_CYAN);
  }
  
  delay(WAIT);
  
  tft.fillRect(1,15,478-1,304-15,TFT_BLACK);

// Draw some random circles
  for (int i=0; i<100; i++)
  {
    x=32+random(416);
    y=45+random(226);
    r=random(30);
    tft.drawCircle(x, y, r,random(0xFFFF));
  }

  delay(WAIT);
  
  tft.fillRect(1,15,478-1,304-15,TFT_BLACK);

// Draw some random rectangles
  for (int i=0; i<100; i++)
  {
    x=2+random(476);
    y=16+random(289);
    x2=2+random(476);
    y2=16+random(289);
    if (x2<x) {
      r=x;x=x2;x2=r;
    }
    if (y2<y) {
      r=y;y=y2;y2=r;
    }
    tft.drawRect(x, y, x2-x, y2-y,random(0xFFFF));
  }

  delay(WAIT);
  
  tft.fillRect(1,15,478-1,304-15,TFT_BLACK);

// Draw some random rounded rectangles
  for (int i=0; i<100; i++)
  {
    x=2+random(476);
    y=16+random(289);
    x2=2+random(476);
    y2=16+random(289);
    if (x2<x) {
      r=x;x=x2;x2=r;
    }
    if (y2<y) {
      r=y;y=y2;y2=r;
    }
    tft.drawRoundRect(x, y, x2-x, y2-y, 3,random(0xFFFF));
  }

  delay(WAIT);
  
  tft.fillRect(1,15,478-1,304-15,TFT_BLACK);

  for (int i=0; i<100; i++)
  {
    x=2+random(476);
    y=16+random(289);
    x2=2+random(476);
    y2=16+random(289);
    col=random(0xFFFF);
    tft.drawLine(x, y, x2, y2,col);
  }

  delay(WAIT);
  
  tft.fillRect(1,15,478-1,304-15,TFT_BLACK);

  for (int i=0; i<10000; i++)
  {
    tft.drawPixel(2+random(476), 16+random(289),random(0xFFFF));
  }

  delay(WAIT);

  tft.fillRect(0, 0, 480, 320, TFT_BLUE);

  tft.fillRoundRect(160, 70, 319-160, 169-70, 3,TFT_RED);
  
  tft.setTextColor(TFT_WHITE,TFT_RED);
  tft.drawCentreString("That's it!", CENTRE, 93,2);
  tft.drawCentreString("Restarting in a", CENTRE, 119, 2);
  tft.drawCentreString("few seconds...", CENTRE, 132, 2);

  tft.setTextColor(TFT_GREEN,TFT_BLUE);
  tft.drawCentreString("Runtime: (msecs)", CENTRE, 280, 2);
  tft.setTextDatum(TC_DATUM);
  runTime = millis()-runTime;
  tft.drawNumber(runTime, CENTRE, 300,2);
  tft.setTextDatum(TL_DATUM);
  delay (10000);
}