How to draw Fill Triangle using the library Adafruit GFX library?

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david_prentice:
@Campax2,

There were a LOT of syntax errors, bad practice, ...
Here is some example code:

#include <MCUFRIEND_kbv.h> //Librería Necesaria

MCUFRIEND_kbv tft;

#include <FreeDefaultFonts.h>   //SmallFont, BigFont, SevenSegFont
#include <Fonts/FreeSerif12pt7b.h> //Free Font that comes with GFX

#define NEGRO     0x0000
#define AZUL      0x001F
#define ROJO      0xF800
#define VERDE     0x07E0
#define CIAN      0x07FF
#define MAGENTA   0xF81F
#define AMARILLO  0xFFE0
#define BLANCO    0xFFFF

int color;
int led = 10; //Pin PWM donde va conectado el LED

//Define el ancho y largo de la pantalla en pixeles
int x_size = 480; int y_size = 320;

bool settscrsize (int w, int h)
{
   if ((w <= 0) || (h <= 0)) return false;
   x_size = w; y_size = h;
   return true;
}

void LogoSielco(int x1, int y1)
{
   // these are all Adafruit_GFX class methods
   tft.setFont(&FreeBigFont);   //note that you use &
   //    tft.setFont(&FreeSerif12pt7b);   //better looking font
   tft.fillTriangle(x1, y1, x1 + 19, y1, x1, y1 + 19, ROJO);
   tft.fillTriangle(x1 + 18, y1 + 1, x1 + 23, y1 - 5, x1 + 12, y1 + 1, ROJO);
   tft.fillTriangle(x1 + 2, y1 + 18, x1 + 4, y1 + 18, x1 + 2, y1 + 14, ROJO);
   tft.fillTriangle(x1 + 3, y1 + 14, x1 + 8, y1 + 14, x1 + 5, y1 + 19, ROJO);
   tft.fillTriangle(x1 + 23, y1 + 6, x1 + 23, y1 + 26, x1 + 3, y1 + 26, NEGRO);
   tft.fillTriangle(x1 + 2, y1 + 27, x1 - 1, y1 + 31, x1 + 7, y1 + 27, NEGRO);
   tft.fillTriangle(x1 + 21, y1 + 7, x1 + 18, y1 + 7, x1 + 20, y1 + 10, NEGRO);
   tft.fillTriangle(x1 + 18, y1 + 5, x1 + 13, y1 + 12, x1 + 19, y1 + 12, NEGRO);
   tft.setTextColor(NEGRO);             //Free Fonts always transparent
   tft.setCursor(x1 + 24, y1 + 5 + 10); //Free Fonts draw from baseline
   // Print class methods from Print.h
   tft.print("Sielco");
}

void setup(void)
{
   // these are MCUFRIEND_kbv methods
   uint16_t ID = tft.readID();
   tft.begin(ID);
   // these are all Adafruit_GFX class methods
   tft.setRotation(1);         //Landscape
   tft.fillScreen(BLANCO);
}

void loop(void)
{
   LogoSielco(180, 80);
}




From the extras/mcufriend_how_to.txt:
I suggest that you try the GFX tutorial.
Please ask questions. Quote which example or tutorial you are having difficulty with.
People are happy to help. (if they know where to look e.g. link or sketch name)

David.

Your code if it worked for me !!

Thanks David, I really appreciate your help, I really do not know how to use Adafruit's new libraries, I'll have to start with that, I already had a project built with Rinky Dinky libraries, I had a hard time doing it, but there's no problem, Now that I changed the screen I will need to start it again, they are like 2,300 lines of code, but in advance thank you so much for helping me to understand more the libraries that I have not used, I would appreciate it if you helped me learn more about the creation of geometric figures, and the use of the touch sensor of the screen, to be able to create touch buttons in my project, Regards!