Description

Draw a filled rectangle with a fix color, draw a filled and rounded rectangle, draw an anti-aliased filled and rounded rectangle.

Signature

• void TFT_eSPI::fillRect(int32_t x, int32_t y, int32_t w, int32_t h, uint32_t color)
• void TFT_eSPI::fillRoundRect(int32_t x, int32_t y, int32_t w, int32_t h, int32_t radius, uint32_t color)
• void TFT_eSPI::fillSmoothRoundRect(int32_t x, int32_t y, int32_t w, int32_t h, int32_t radius, uint32_t color, uint32_t bg_color = 0x00FFFFFF)

Parameters

• int32_t x: x coord.
• int32_t y: y coord.
• int32_t w: Rect width.
• int32_t h: Rect height.
• int32_t radius: corner radius.
• uint32_t color: Fill color.
• uint32_t bg_color: Background color (defaulted to 0x00FFFFFF); If the bg_color is not specified, the background pixel colour will be read from TFT or sprite.

Result

None.

Example

void setup() {
  Serial.begin(115200);
  tft.begin();
  tft.setRotation(0);
  tft.fillScreen(TFT_BLACK); // Clear the screen with black color
}

void loop() {
  int x = 10; // x-coordinate of the top-left corner of the rectangle
  int y = 10; // y-coordinate of the top-left corner of the rectangle
  int w = 50; // width of the rectangle
  int h = 20; // height of the rectangle
  uint16_t color = TFT_RED; // color of the rectangle

  tft.fillRect(x, y, w, h, color); // Draw a filled rectangle

  delay(1000); // wait for 1 second
}

In this example, we first clear the screen with a black color using tft.fillScreen(TFT_BLACK). Then, in the loop() function, we define the coordinates, width, height, and color of the rectangle we want to draw. Finally, we use tft.fillRect(x, y, w, h, color) to draw the filled rectangle.

Note that the fillRect function takes five arguments:

• x: the x-coordinate of the top-left corner of the rectangle
• y: the y-coordinate of the top-left corner of the rectangle
• w: the width of the rectangle
• h: the height of the rectangle
• color: the color of the rectangle

You can adjust these values to draw rectangles of different sizes, positions, and colors on your TFT display.