opengl 字符编码

原创已于 2024-04-23 01:59:36 修改 · 199 阅读

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于 2024-04-23 01:59:02 首次发布

计算机图形学OpenGL 专栏收录该内容

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这篇文章展示了如何使用C++和OpenGL库GLUT创建一个简单的图形窗口，包括颜色设置、四边形绘制和窗口初始化函数。

#define _CRT_SECURE_NO_WARNINGS
#include<stdlib.h>
#include<math.h>
#include<Windows.h>
#include<stdio.h> //86
#include<GL/glut.h>
void Init() {                  
	glClearColor(0.7f, 0.8f, 1.0f, 0.0f);  //浅蓝
}
void Reshape(int w, int h) {
	glViewport(0, 0, w, h);
	glMatrixMode(GL_COLOR_BUFFER_BIT);
	glLoadIdentity();
	gluOrtho2D(0, (double)w, 0, (double)h);
}
unsigned char symple[] = {
		0x00,0x00,0x00,0x00,
		0x00,0x00,0x00,0x00,
		0x00,0x01,0x80,0x00,
		0x00,0x01,0x80,0x00,
		0x00,0x01,0x80,0x00,
		0x00,0x01,0x80,0x00,
		0x00,0x01,0x80,0x00,
		0x00,0x01,0x80,0x00,
		0x00,0x01,0x80,0x00,
		0x00,0x01,0x80,0x00,

		0x01,0xFF,0xFF,0x80,
		0x01,0xFF,0xFF,0x80,
		0x00,0x01,0x80,0x00,
		0x00,0x01,0x80,0x00,
		0x00,0x01,0x80,0x00,
		0x00,0x01,0x80,0x00,


		0x00,0xFF,0xFC,0x00,
		0x00,0xFF,0xFC,0x00,

		0x00,0xE1,0x80,0x00,
		//0x00,0x61,0x80,0x00,
		0x00,0x71,0x80,0x00,
		0x00,0x30,0x00,0x00,
		0x00,0x18,0x00,0x00,
		0x00,0x0C,0x00,0x00,

		0x01,0xFF,0xFF,0x80,
		0x01,0xFF,0xFF,0x80,
		0x00,0x0C,0x00,0x00,
		0x00,0x00,0x00,0x00,

		0x06,0x00,0x00,0x60,

		0x07,0xFF,0xFF,0xE0,
		0x07,0xFF,0xFF,0xE0,

		0x00,0x00,0x00,0x00,
		0x00,0x00,0x00,0x00,
};
void myDisplay(void) {
	glClear(GL_COLOR_BUFFER_BIT);
	
	
	glColor3f(0.0f, 0.0f, 0.0f);
	glPolygonStipple(symple);
	glEnable(GL_POLYGON_STIPPLE);

	glBegin(GL_QUADS);
	glVertex2f(100, 100);
	glVertex2f(500, 100);
	glVertex2f(500, 500);
	glVertex2f(100, 500);
	glEnd();
	glFlush();
	glDisable(GL_POLYGON_STIPPLE);
	
}
int main(int argc,char *argv[])
{
	glutInit(&argc,argv);
	glutInitDisplayMode(GLUT_RGB | GLUT_SINGLE);
	glutInitWindowPosition(100, 100);
	glutInitWindowSize(800, 700);
	glutCreateWindow("the forth");
	Init();
	glutReshapeFunc(Reshape);
	glutDisplayFunc(myDisplay);
	glutMainLoop();
	return 0;
}