【花雕学编程】Arduino动手做（249）---ESP32 1.28寸 TFT GC9A01屏之动态变化的两个绿色圆形模拟双眼 简单

/*
  【Arduino】189种传感器模块系列实验（资料代码+仿真编程+图形编程）
  实验二百四十九：1.28寸圆形彩色TFT显示屏 高清IPS 模块 240*240 SPI接口GC9A01驱动
  项目之九十：GC9A01园屏之动态变化的两个绿色圆形模拟双眼
*/

//       GC9A01---------- ESP32
//       RST ------------ NC（复位引脚，此处未连接）
//       CS ------------- D4（片选引脚，连接到ESP32的D4引脚）
//       DC ------------- D2（数据/命令选择引脚，连接到ESP32的D2引脚）
//       SDA ------------ D23 (green)（主数据输出引脚，连接到ESP32的D23引脚，绿色线）
//       SCL ------------ D18 (yellow)（时钟信号引脚，连接到ESP32的D18引脚，黄色线）
//       GND ------------ GND（接地引脚，连接到ESP32的接地端）
//       VCC -------------3V3（电源引脚，连接到ESP32的3.3V电源）

#include "SPI.h"
#include "Adafruit_GFX.h"
#include "Adafruit_GC9A01A.h"

#define TFT_CS 4
#define TFT_DC 2
#define TFT_RST -1

Adafruit_GC9A01A tft = Adafruit_GC9A01A(TFT_CS, TFT_DC, TFT_RST);

#define SCREEN_WIDTH 240
#define SCREEN_HEIGHT 240
#define CENTER_Y SCREEN_HEIGHT / 2
#define EYE_RADIUS 30  // **眼睛半径**
#define PUPIL_RADIUS 10  // **瞳孔半径**
#define EYE_SPACING 70  // **两眼间距**
#define MOVE_DISTANCE 40  // **左右移动距离**
#define SPEED 15  // **动画速度**

int eyeOffsetX = 0;
bool movingRight = true;
int expression = 0;  // **0: 正常, 1: 笑, 2: 哭**

void drawSmile(int x, int y) {
    for (int angle = 0; angle <= 180; angle += 5) {
        float radian = angle * M_PI / 180;
        int x1 = x + 15 * cos(radian);
        int y1 = y + 10 * sin(radian);
        int x2 = x + 15 * cos(radian + 5 * M_PI / 180);
        int y2 = y + 10 * sin(radian + 5 * M_PI / 180);
        tft.drawLine(x1, y1, x2, y2, tft.color565(255, 255, 255));
    }
}

void setup() {
    Serial.begin(115200);
    tft.begin();
    tft.setRotation(2);
}

void loop() {
    tft.fillScreen(tft.color565(0, 0, 0));

    int leftEyeX = SCREEN_WIDTH / 2 - EYE_SPACING / 2 + eyeOffsetX;
    int rightEyeX = SCREEN_WIDTH / 2 + EYE_SPACING / 2 + eyeOffsetX;

    // **绘制双眼**
    tft.fillCircle(leftEyeX, CENTER_Y, EYE_RADIUS, tft.color565(0, 255, 0));  // **左眼**
    tft.fillCircle(rightEyeX, CENTER_Y, EYE_RADIUS, tft.color565(0, 255, 0));  // **右眼**

    // **绘制瞳孔**
    tft.fillCircle(leftEyeX, CENTER_Y, PUPIL_RADIUS, tft.color565(0, 0, 0));  
    tft.fillCircle(rightEyeX, CENTER_Y, PUPIL_RADIUS, tft.color565(0, 0, 0));

    // **绘制表情**
    if (expression == 1) {  // **笑**
        drawSmile(leftEyeX, CENTER_Y + 10);
        drawSmile(rightEyeX, CENTER_Y + 10);
    } else if (expression == 2) {  // **哭**
        tft.fillCircle(leftEyeX, CENTER_Y + 15, 5, tft.color565(0, 0, 255));  // **左眼泪**
        tft.fillCircle(rightEyeX, CENTER_Y + 15, 5, tft.color565(0, 0, 255));  // **右眼泪**
    }

    // **更新眼睛左右移动**
    if (movingRight) {
        eyeOffsetX += SPEED;
        if (eyeOffsetX >= MOVE_DISTANCE) movingRight = false;
    } else {
        eyeOffsetX -= SPEED;
        if (eyeOffsetX <= -MOVE_DISTANCE) movingRight = true;
    }

    // **切换表情**
    expression = (expression + 1) % 3;

    delay(500);
}