de v c++玫瑰花代码

以下是使用Dev-C++和EasyX绘图软件绘制玫瑰花的C++代码：

#include <graphics.h>
#include <math.h>

// 定义结构体
struct DOT {
    double x;
    double y;
    double z;
    double red;   // 红色
    double green; // 绿色
    // blue（蓝色)通过red计算
};

// 定义常量
const double PI = 3.14159265358979323846;
const int WIDTH = 800;
const int HEIGHT = 600;
const int RADIUS = 200;
const int PETALS = 7;
const int LEAFS = 15;

// 定义函数
void drawPetal(DOT center, double angle, double radius, double width, double red, double green);
void drawLeaf(DOT center, double angle, double radius, double width, double red, double green);
void drawRose();

int main() {
    initgraph(WIDTH, HEIGHT);
    drawRose();
    getch();
    closegraph();
    return 0;
}

// 绘制花瓣
void drawPetal(DOT center, double angle, double radius, double width, double red, double green) {
    double x1, y1, x2, y2, x3, y3, x4, y4;
    x1 = center.x + radius * cos(angle - PI / 2);
    y1 = center.y + radius * sin(angle - PI / 2);
    x2 = center.x + radius * cos(angle + PI / 2);
    y2 = center.y + radius * sin(angle + PI / 2);
    x3 = center.x + (radius + width) * cos(angle);
    y3 = center.y + (radius + width) * sin(angle);
    x4 = center.x + (radius - width) * cos(angle);
    y4 = center.y + (radius - width) * sin(angle);
    setfillcolor(RGB(red, green, 255 - red));
    BeginPath();
    MoveToEx(x1, y1, NULL);
    LineTo(x3, y3);
    LineTo(x2, y2);
    LineTo(x4, y4);
    EndPath();
    FillPath();
}

// 绘制叶子
void drawLeaf(DOT center, double angle, double radius, double width, double red, double green) {
    double x1, y1, x2, y2, x3, y3, x4, y4;
    x1 = center.x + radius * cos(angle - PI / 2);
    y1 = center.y + radius * sin(angle - PI / 2);
    x2 = center.x + radius * cos(angle + PI / 2);
    y2 = center.y + radius * sin(angle + PI / 2);
    x3 = center.x + (radius + width) * cos(angle);
    y3 = center.y + (radius + width) * sin(angle);
    x4 = center.x + (radius - width) * cos(angle);
    y4 = center.y + (radius - width) * sin(angle);
    setfillcolor(RGB(red, green, 255 - red));
    BeginPath();
    MoveToEx(x1, y1, NULL);
    LineTo(x3, y3);
    LineTo(center.x, center.y);
    LineTo(x4, y4);
    EndPath();
    FillPath();
}

// 绘制玫瑰花
void drawRose() {
    DOT center;
    center.x = WIDTH / 2;
    center.y = HEIGHT / 2;
    center.z = 0;
    for (int i = 0; i < PETALS; i++) {
        double angle = 2 * PI / PETALS * i;
        drawPetal(center, angle, RADIUS, 20, 255, 0);
        drawPetal(center, angle, RADIUS, 10, 255, 255);
    }
    for (int i = 0; i < LEAFS; i++) {
        double angle = 2 * PI / LEAFS * i;
        drawLeaf(center, angle, RADIUS * 0.8, 10, 0, 255);
    }
}