使用 EasyX 生成动画的方法

#include <graphics.h>
#include <time.h>
#include <conio.h>
#include <stdio.h>

#define WINWIDTH  1200
#define WINHEIGHT  600
#define RADIUS	  280

int main()
{
	TCHAR FilenameBuffer[256];
	
	// 初始化图形模式
	initgraph(WINWIDTH, WINHEIGHT);
	//getimage(pImage,0,0, WINWIDTH-1, WINHEIGHT-1);
	setfillcolor(RED);
	fillcircle(WINWIDTH/2, WINHEIGHT/2,RADIUS);
	setfillcolor(GREEN);
	
	for (int i = 1; i < 1001; i++) {
		BeginBatchDraw();
		fillpie(
			(WINWIDTH - RADIUS)/2, 
			(WINHEIGHT - RADIUS)/2, 
			(WINWIDTH + RADIUS)/2, 
			(WINHEIGHT + RADIUS)/2, 
			0, 3.14*2/1000*i);
		EndBatchDraw();

		swprintf(FilenameBuffer,sizeof(FilenameBuffer), L"%05d.jpg", i);
		printf("%ls\n", FilenameBuffer);
		saveimage(FilenameBuffer);
	}

	// 按任意键退出
	_getch();

	// 关闭图形模式
	closegraph();
	return 0;
}

ffmpeg -r 25 -i %05d.jpg -b:v 4M output2.mp4