英國國旗 << Previous Next >> 中國國旗
韓國國旗

  #include <stdio.h>
  #include <gd.h>
  #include <math.h>

  #define WIDTH 900
  #define HEIGHT 600
  #define FILENAME "south_korea_flag.png"

  int main() {
      gdImagePtr im;
      FILE *pngout;
      int white, black, red, blue;

      im = gdImageCreate(WIDTH, HEIGHT);

      white = gdImageColorAllocate(im, 255, 255, 255);
      black = gdImageColorAllocate(im, 0, 0, 0);
      red = gdImageColorAllocate(im, 205, 0, 0);
      blue = gdImageColorAllocate(im, 0, 56, 168);

      // Background (white)
      gdImageFilledRectangle(im, 0, 0, WIDTH, HEIGHT , white);

      // Blue Circle (Yin-Yang Symbol)
      gdImageFilledArc(im, WIDTH / 2, HEIGHT / 2, WIDTH / 3, HEIGHT / 2, 210, 30, red, gdArc);

      // Red Circle (Yin-Yang Symbol)
      gdImageFilledArc(im, WIDTH / 2, HEIGHT / 2, WIDTH / 3, HEIGHT / 2, 30, 210, blue, gdArc);

    int circleX = 385;    // 圓心的 X 座標
    int circleY = 262.5;   // 圓心的 Y 座標
    int circleRadius = 75;     

    // 繪製圓形
    gdImageFilledEllipse(im, circleX, circleY, circleRadius * 2, circleRadius * 2, red);

    int circleX2 = 515;    // 圓心的 X 座標

   int circleY2 = 337.5;

    // 繪製圓形
    gdImageFilledEllipse(im, circleX2, circleY2, circleRadius * 2, circleRadius * 2, blue);

    {


    // 起點和終點位置

    int startX = 340;    
    // 線的起點 X 座標

    int startY = 90;   
    // 線的起點 Y 座標

    int endX = 200;     
    // 線的終點 X 座標

    int endY = 260;     
    // 線的終點 Y 座標

    int lineWidth = 23;  // 線的寬度

    // 繪製線段
    gdImageSetThickness(im, lineWidth);
    gdImageLine(im, startX, startY, endX, endY, black);
    // 繪製線段
    gdImageSetThickness(im, lineWidth);
    gdImageLine(im, startX -35, startY -10, endX -35, endY -10, black);

    // 繪製線段
    gdImageSetThickness(im, lineWidth);
    gdImageLine(im, startX -70, startY -20, endX -70, endY -20, black);

    int startX2 = 213;    
    // 線的起點 X 座標

    int startY2 = 270;   
    // 線的起點 Y 座標

    int endX2 = 133;     
    // 線的終點 X 座標

    int endY2 = 210;     
    // 線的終點 Y 座標

    int lineWidth2 = 25;  // 線的寬度

    // 繪製線段
    gdImageSetThickness(im, lineWidth);
    gdImageLine(im, startX2 +3, startY2, endX2 +3, endY2, white);

    gdImageSetThickness(im, lineWidth +10);
  gdImageLine(im, startX2 -17, startY2 +9 , endX2 -17, endY2 +9 , white);

    gdImageSetThickness(im, lineWidth );
  gdImageLine(im, startX2 +115, startY2 -145, endX2 +115, endY2 -145, white);

    gdImageSetThickness(im, lineWidth);
  gdImageLine(im, startX2 +120, startY2 -155, endX2 +120, endY2 -155, white);

    gdImageSetThickness(im, lineWidth +12);
  gdImageLine(im, startX2 +145, startY2 -155, endX2 +145, endY2 -155, white);
  }
    {
      // 起點和終點位置

    int startX = 330;    
    // 線的起點 X 座標

    int startY = 520;   
    // 線的起點 Y 座標

    int endX = 190;     
    // 線的終點 X 座標

    int endY = 350;     
    // 線的終點 Y 座標

    int lineWidth = 23;  // 線的寬度

    // 繪製線段
    gdImageSetThickness(im, lineWidth);
    gdImageLine(im, startX, startY, endX, endY, black);
    // 繪製線段
    gdImageSetThickness(im, lineWidth);
    gdImageLine(im, startX -35, startY +10, endX -35, endY +10, black);

    // 繪製線段
    gdImageSetThickness(im, lineWidth);
    gdImageLine(im, startX -70, startY +20, endX -70, endY +20, black);

    int startX2 = 213;    
    // 線的起點 X 座標

    int startY2 = 330;   
    // 線的起點 Y 座標

    int endX2 = 133;     
    // 線的終點 X 座標

    int endY2 = 390;     
    // 線的終點 Y 座標

    int lineWidth2 = 25;  // 線的寬度

    // 繪製線段
    gdImageSetThickness(im, lineWidth +8);
    gdImageLine(im, startX2 -11, startY2, endX2 -11, endY2, white);

    gdImageSetThickness(im, lineWidth +10);
  gdImageLine(im, startX2 -30, startY2 -9 , endX2 -30, endY2 -9 , white);

    gdImageSetThickness(im, lineWidth );
  gdImageLine(im, startX2 +100, startY2 +150, endX2 +100, endY2 +150, white);

    gdImageSetThickness(im, lineWidth);
  gdImageLine(im, startX2 +120, startY2 +155, endX2 +120, endY2 +155, white);

    gdImageSetThickness(im, lineWidth +14);
  gdImageLine(im, startX2 +145, startY2 +157, endX2 +145, endY2 +157, white);

      gdImageSetThickness(im, lineWidth -10);
  gdImageLine(im, 232, 426, 206, 448, white);

    }

    {
      // 起點和終點位置

    int startX = 564;    
    // 線的起點 X 座標

    int startY = 520;   
    // 線的起點 Y 座標

    int endX = 704;     
    // 線的終點 X 座標

    int endY = 350;     
    // 線的終點 Y 座標

    int lineWidth = 23;  // 線的寬度

    // 繪製線段
    gdImageSetThickness(im, lineWidth);
    gdImageLine(im, startX +70, startY +20, endX +70, endY +20, black);

      // 繪製線段
    gdImageSetThickness(im, lineWidth);
    gdImageLine(im, startX, startY, endX, endY, black);

      // 繪製線段
    gdImageSetThickness(im, lineWidth);
    gdImageLine(im, startX +35, startY +10, endX +35, endY +10, black);

  gdImageSetThickness(im, lineWidth -10);
  gdImageLine(im, 624, 400, 734, 490, white);

    int startX2 = 553;    
    // 線的起點 X 座標

    int startY2 = 330;   
    // 線的起點 Y 座標

    int endX2 = 633;     
    // 線的終點 X 座標

    int endY2 = 390;     
    // 線的終點 Y 座標

    int lineWidth2 = 25;  // 線的寬度

    // 繪製線段
    gdImageSetThickness(im, lineWidth +8);
    gdImageLine(im, startX2 +139, startY2, endX2 +139, endY2, white);

    gdImageSetThickness(im, lineWidth +10);
  gdImageLine(im, startX2 +157, startY2 -9 , endX2 +157, endY2 -9 , white);

    gdImageSetThickness(im, lineWidth);
  gdImageLine(im, startX2 +25, startY2 +155, endX2 +25, endY2 +155, white);

    gdImageSetThickness(im, lineWidth +30);
  gdImageLine(im, startX2 -3, startY2 +170, endX2 , endY2 +170, white);
    }
    {
      // 起點和終點位置

    int startX = 330;    
    // 線的起點 X 座標

    int startY = 520;   
    // 線的起點 Y 座標

    int endX = 190;     
    // 線的終點 X 座標

    int endY = 350;     
    // 線的終點 Y 座標

    int lineWidth = 23;  // 線的寬度

    // 繪製線段
    gdImageSetThickness(im, lineWidth);
    gdImageLine(im, startX, startY, endX, endY, black);
    // 繪製線段
    gdImageSetThickness(im, lineWidth);
    gdImageLine(im, startX -35, startY +10, endX -35, endY +10, black);

    // 繪製線段
    gdImageSetThickness(im, lineWidth);
    gdImageLine(im, startX -70, startY +20, endX -70, endY +20, black);

    int startX2 = 213;    
    // 線的起點 X 座標

    int startY2 = 330;   
    // 線的起點 Y 座標

    int endX2 = 133;     
    // 線的終點 X 座標

    int endY2 = 390;     
    // 線的終點 Y 座標

    int lineWidth2 = 25;  // 線的寬度

    // 繪製線段
    gdImageSetThickness(im, lineWidth +8);
    gdImageLine(im, startX2 -11, startY2, endX2 -11, endY2, white);

    gdImageSetThickness(im, lineWidth +10);
  gdImageLine(im, startX2 -30, startY2 -9 , endX2 -30, endY2 -9 , white);

    gdImageSetThickness(im, lineWidth );
  gdImageLine(im, startX2 +100, startY2 +150, endX2 +100, endY2 +150, white);

    gdImageSetThickness(im, lineWidth);
  gdImageLine(im, startX2 +120, startY2 +155, endX2 +120, endY2 +155, white);

    gdImageSetThickness(im, lineWidth +14);
  gdImageLine(im, startX2 +145, startY2 +157, endX2 +145, endY2 +157, white);

      gdImageSetThickness(im, lineWidth -10);
  gdImageLine(im, 232, 426, 206, 448, white);

    }
    {
      // 起點和終點位置

    int startX = 564;    
    // 線的起點 X 座標

    int startY = 97;   
    // 線的起點 Y 座標

    int endX = 704;     
    // 線的終點 X 座標

    int endY = 267;     
    // 線的終點 Y 座標

    int lineWidth = 23;  // 線的寬度

    // 繪製線段
    gdImageSetThickness(im, lineWidth);
    gdImageLine(im, startX +70, startY -20, endX +70, endY -20, black);

      // 繪製線段
    gdImageSetThickness(im, lineWidth);
    gdImageLine(im, startX, startY, endX, endY, black);

      gdImageSetThickness(im, lineWidth -10);
  gdImageLine(im, 624, 212, 734, 118, white);

      // 繪製線段
    gdImageSetThickness(im, lineWidth);
    gdImageLine(im, startX +35, startY -10, endX +35, endY -10, black);

    int startX2 = 553;    
    // 線的起點 X 座標

    int startY2 = 277;   
    // 線的起點 Y 座標

    int endX2 = 633;     
    // 線的終點 X 座標

    int endY2 = 217;     
    // 線的終點 Y 座標

    int lineWidth2 = 25;  // 線的寬度

    // 繪製線段
    gdImageSetThickness(im, lineWidth +8);
    gdImageLine(im, startX2 +134, startY2, endX2 +134, endY2, white);

    gdImageSetThickness(im, lineWidth +10);
  gdImageLine(im, startX2 +157, startY2 +9 , endX2 +157, endY2 +9 , white);

    gdImageSetThickness(im, lineWidth);
  gdImageLine(im, startX2 +25, startY2 -155, endX2 +25, endY2 -155, white);

      gdImageSetThickness(im, lineWidth +30);
  gdImageLine(im, startX2 -5, startY2 -155, endX2 -5, endY2 -155, white);

    }

      // Save image
  FILE *outputFile = fopen("./../images/korea_flag.png", "wb");
  if (outputFile == NULL) {
      fprintf(stderr, "Error opening the output file.\n");
      return 1;
  }
    gdImagePngEx(im, outputFile, 9);
        fclose(outputFile);
        gdImageDestroy(im);
        return 0;
    }
英國國旗 << Previous Next >> 中國國旗