Added new examples

examples/Arduino/TFTArc/TFTArc.ino

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+/* TFTArc
+  by K.Abhijeet
+  This example code takes input x, y(center coordinates of arc ), r(radius), start angle and end angle from serial and prints the arc to the screen.
+*/
+
+#include <TFT.h>  // Arduino LCD library
+#include <SPI.h>
+
+// pin definition for the Uno
+#define cs   10
+#define dc   9
+#define rst  8
+
+
+// pin definition for the Leonardo
+// #define cs   7
+// #define dc   0
+// #define rst  1
+
+// create an instance of the library
+TFT TFTscreen = TFT(cs, dc, rst);
+int16_t x, y, r, st_angle, end_angle;
+
+void setup() {
+
+  Serial.begin(9600);
+
+  // Put this line at the beginning of every sketch that uses the GLCD:
+  TFTscreen.begin();
+
+  // clear the screen with a black background
+  TFTscreen.background(0, 0, 0);
+
+  // set the font color to white
+  TFTscreen.stroke(255, 255, 255);
+
+  // print text on the serial monitor to instruct user for the input
+  Serial.println("Enter x :");
+  //waiting for input
+  while (Serial.available() == 0) {}
+  x = Serial.parseInt();
+
+  // print text on the serial monitor to instruct user for the input
+  Serial.println("Enter y :");
+  //waiting for input
+  while (Serial.available() == 0) {}
+  y = Serial.parseInt();
+
+  // print text on the serial monitor to instruct user for the input
+  Serial.println("Enter r :");
+  //waiting for input
+  while (Serial.available() == 0) {}
+  r = Serial.parseInt();
+
+  // print text on the serial monitor to instruct user for the input
+  Serial.println("Enter start angle :");
+  //waiting for input
+  while (Serial.available() == 0) {}
+  st_angle = Serial.parseInt();
+
+  // print text on the serial monitor to instruct user for the input
+  Serial.println("Enter end angle :");
+  //waiting for input
+  while (Serial.available() == 0) {}
+  end_angle = Serial.parseInt();
+
+  TFTscreen.setTextSize(1);
+  TFTscreen.text("Your Arc: ", 2, 0);
+
+  TFTscreen.arc(x, y, r, st_angle, end_angle); //draw arc
+}
+
+void loop() {}

examples/Arduino/TFTCircle/TFTCircle.ino

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+/* TFTCircle
+
+  by K.Abhijeet
+  This example code takes input radius from serial and prints the circle to the screen.
+*/
+
+#include <TFT.h>  // Arduino LCD library
+#include <SPI.h>
+
+// pin definition for the Uno
+#define cs   10
+#define dc   9
+#define rst  8
+
+// pin definition for the Leonardo
+// #define cs   7
+// #define dc   0
+// #define rst  1
+
+// create an instance of the library
+TFT TFTscreen = TFT(cs, dc, rst);
+
+int red;
+
+void setup() {
+
+  Serial.begin(9600);
+
+  // Put this line at the beginning of every sketch that uses the GLCD:
+  TFTscreen.begin();
+
+  // clear the screen with a black background
+  TFTscreen.background(0, 0, 0);
+
+  // set the font color to white
+  TFTscreen.stroke(255, 255, 255);
+
+  // print text on the serial monitor to instruct user for the input
+  Serial.println("Enter radius :");
+  //waiting for input
+  while (Serial.available() == 0) {}
+  red = Serial.parseInt();
+
+  TFTscreen.setTextSize(1);
+  TFTscreen.text("Your circle : ", 2, 0);
+
+  TFTscreen.fill(255, 255, 0);
+  TFTscreen.circle( TFTscreen.width() / 2,  TFTscreen.height() / 2, red); // draw circle
+}
+
+void loop() {}

examples/Arduino/TFTLine/TFTLine.ino

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+/* TFTLine
+
+  by K.Abhijeet
+  This example code takes input x1,y1(Initial coordinates to draw the line) and x2,y2(end co-ordinates to draw the line) from serial monitor and prints the line to the screen.
+*/
+
+#include <TFT.h>  // Arduino LCD library
+#include <SPI.h>
+
+// pin definition for the Uno
+#define cs   10
+#define dc   9
+#define rst  8
+
+// pin definition for the Leonardo
+// #define cs   7
+// #define dc   0
+// #define rst  1
+
+// create an instance of the library
+TFT TFTscreen = TFT(cs, dc, rst);
+int x1, y1, x2, y2;
+
+void setup() {
+
+  Serial.begin(9600);
+
+  // Put this line at the beginning of every sketch that uses the GLCD:
+  TFTscreen.begin();
+
+  // clear the screen with a black background
+  TFTscreen.background(0, 0, 0);
+
+  // set the font color to white
+  TFTscreen.stroke(255, 255, 255);
+
+  // print text on the serial monitor to instruct user for the input
+  Serial.println("Enter x1 :");
+  //waiting for input
+  while (Serial.available() == 0) {}
+  x1 = Serial.parseInt();
+
+  // print text on the serial monitor to instruct user for the input
+  Serial.println("Enter y1 :");
+  //waiting for input
+  while (Serial.available() == 0) {}
+  y1 = Serial.parseInt();
+
+  // print text on the serial monitor to instruct user for the input
+  Serial.println("Enter x2 :");
+  //waiting for input
+  while (Serial.available() == 0) {}
+  x2 = Serial.parseInt();
+
+  // print text on the serial monitor to instruct user for the input
+  Serial.println("Enter y2 :");
+  //waiting for input
+  while (Serial.available() == 0) {}
+  y2 = Serial.parseInt();
+
+  TFTscreen.setTextSize(1);
+  TFTscreen.text("Your Line : ", 2, 0);
+  TFTscreen.line(x1, y1, x2, y2);
+}
+void loop() {}

examples/Arduino/TFTPointLine/TFTPointLine.ino

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+/* TFTPointLine
+
+  by K.Abhijeet
+  This example code takes input x1,y1(Initial coordinates to draw the line) and x2,y2(end coordinates to draw the line) from serial monitor and prints the line to the screen
+  by using bresenham’s line drawing algorithm.
+*/
+
+#include <TFT.h>  // Arduino LCD library
+#include <SPI.h>
+
+// pin definition for the Uno
+#define cs   10
+#define dc   9
+#define rst  8
+
+// pin definition for the Leonardo
+// #define cs   7
+// #define dc   0
+// #define rst  1
+
+// create an instance of the library
+TFT TFTscreen = TFT(cs, dc, rst);
+int x1, y1, x2, y2;
+float m, b;
+void setup() {
+
+  Serial.begin(9600);
+
+  // Put this line at the beginning of every sketch that uses the GLCD:
+  TFTscreen.begin();
+
+  // clear the screen with a black background
+  TFTscreen.background(0, 0, 0);
+
+  // set the font color to white
+  TFTscreen.stroke(255, 255, 255);
+
+  // print text on the serial monitor to instruct user for the input
+  Serial.println("Enter x1 :");
+  //waiting for input
+  while (Serial.available() == 0) {}
+  x1 = Serial.parseInt();
+
+  // print text on the serial monitor to instruct user for the input
+  Serial.println("Enter y1 :");
+  //waiting for input
+  while (Serial.available() == 0) {}
+  y1 = Serial.parseInt();
+
+  // print text on the serial monitor to instruct user for the input
+  Serial.println("Enter x2 :");
+  //waiting for input
+  while (Serial.available() == 0) {}
+  x2 = Serial.parseInt();
+
+  // print text on the serial monitor to instruct user for the input
+  Serial.println("Enter y2 :");
+  //waiting for input
+  while (Serial.available() == 0) {}
+  y2 = Serial.parseInt();
+
+  TFTscreen.setTextSize(1);
+  TFTscreen.text("Your Line : ", 2, 0);
+  drawline(x1, y1, x2, y2);
+}
+void loop() {}
+
+void drawline(int x0, int y0, int x1, int y1)
+{
+  int dx, dy, p, x, y;
+
+  dx = x1 - x0;
+  dy = y1 - y0;
+
+  x = x0;
+  y = y0;
+
+  p = 2 * dy - dx;
+
+  while (x < x1)
+  {
+    if (p >= 0)
+    {
+      delay(100);
+      TFTscreen.point(x, y);
+      y = y + 1;
+      p = p + 2 * dy - 2 * dx;
+    }
+    else
+    {
+      delay(100);
+      TFTscreen.point(x, y);
+      p = p + 2 * dy;
+    }
+    x = x + 1;
+  }
+}

examples/Arduino/TFTRainbow/TFTRainbow.ino

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+/* TFTRainbow
+  by K.Abhijeet
+  This example code prints the Rainbow to the screen.
+*/
+
+#include <TFT.h>  // Arduino LCD library
+#include <SPI.h>
+
+// pin definition for the Uno
+#define cs   10
+#define dc   9
+#define rst  8
+
+
+// pin definition for the Leonardo
+// #define cs   7
+// #define dc   0
+// #define rst  1
+
+// create an instance of the library
+TFT TFTscreen = TFT(cs, dc, rst);
+int16_t x=80, y=100, r, st_angle=0, end_angle=180;
+
+void setup() {
+
+  Serial.begin(9600);
+
+  // Put this line at the beginning of every sketch that uses the GLCD:
+  TFTscreen.begin();
+
+  // clear the screen with a black background
+  TFTscreen.background(0, 0, 0);
+
+  // set the font color to white
+  TFTscreen.stroke(255, 255, 255);
+
+
+  TFTscreen.setTextSize(1);
+  TFTscreen.text("Rainbow: ", 2, 0);
+
+  for(r=0;r<=50;r++)
+  {
+     TFTscreen.stroke(random(255),random(255),random(255));
+     delay(5);
+     TFTscreen.arc(x, y, r, st_angle, end_angle);    
+    }
+
+  Serial.println("Rainbow completed!");
+}
+
+void loop() {}

examples/Arduino/TFTRect/TFTRect.ino

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+/* TFTRect
+
+  by K.Abhijeet
+  This example code takes input length and width from serial and prints the rectangle to the screen.
+*/
+#include <TFT.h>  // Arduino LCD library
+#include <SPI.h>
+
+// pin definition for the Uno
+#define cs   10
+#define dc   9
+#define rst  8
+
+// pin definition for the Leonardo
+// #define cs   7
+// #define dc   0
+// #define rst  1
+
+// create an instance of the library
+TFT TFTscreen = TFT(cs, dc, rst);
+
+// char array to print to the screen
+
+int len, wid;
+
+void setup() {
+
+  Serial.begin(9600);
+
+  // Put this line at the beginning of every sketch that uses the GLCD:
+  TFTscreen.begin();
+
+  // clear the screen with a black background
+  TFTscreen.background(0, 0, 0);
+
+  // set the font color to white
+  TFTscreen.stroke(255, 255, 255);
+
+  // print text on the serial monitor to instruct user for the input
+  Serial.println("Enter length :");
+  //waiting for input
+  while (Serial.available() == 0) {}
+  len = Serial.parseInt();
+
+  // print text on the serial monitor to instruct user for the input
+  Serial.println("Enter width :");
+  //waiting for input
+  while (Serial.available() == 0) {}
+  wid = Serial.parseInt();
+
+  TFTscreen.setTextSize(1);
+  TFTscreen.text("Your Rectangle : ", 2, 0);
+
+  TFTscreen.fill(255, 255, 0);
+  TFTscreen.rect(10, 20, len, wid); // draw rectangle
+}
+void loop() {}