Tft.drawTriangle()

tft.drawTriangle(int16_t x0, int16_t y0, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint16_t color)

• Effect:
  

Draw a triangle outline on the TFT screen

• Parameters:
  

x0：x coordinate of the apex

y0：y coordinate of the apex

x1：x coordinate of the left bottom point

y1：y coordinate of the left bottom point

x2：x coordinate of the right bottom point

y2：y coordinate of the right bottom point

color：color of the triangle

• Example:
  

#define sclk 13
#define mosi 11
#define cs   5
#define dc   4
#define rst  -1  // you can also connect this to the Arduino reset

#include <Adafruit_GFX.h>    // Core graphics library
#include <Adafruit_ST7735.h> // Hardware-specific library
#include <SPI.h>

#if defined(__SAM3X8E__)
    #undef __FlashStringHelper::F(string_literal)
    #define F(string_literal) string_literal
#endif

Adafruit_ST7735 tft = Adafruit_ST7735(cs, dc, mosi, sclk, rst);

void setup(void) {
  tft.initR(INITR_BLACKTAB);   // initialize a ST7735S chip, black tab
  tft.fillScreen(ST7735_BLACK);
  tft.drawTriangle(43, 30, 40, 90, 80, 120, ST7735_RED);
}

void loop() {  }

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