// main.c
// opengl_ animationrect_0002
//// created by ch_soft on 12-1-16.
//#include
#include
#include
#include
//用於繪製視窗需要的圖形
void renderscene()
// 2. 畫直線
// glfloat sizesline[2];//儲存線寬的尺寸範圍
// glfloat stepline;//儲存線寬度尺寸的最小間隔
glfloat cursizeline=5;
// glgetfloatv(gl_line_width_range,sizesline);
// glgetfloatv(gl_line_width_granularity,&stepline);
gllinewidth(cursizeline);
glbegin
(gl_lines);
glvertex3f
(25.0f,160.0f,0.0f);
glvertex3f
(225.0f,160.0f,0.0f);
glend();
// 3.畫連續的直線
glbegin
(gl_line_strip);
glvertex3f
(25.0f,150.0f,0.0f);
glvertex3f
(100.0f,150.0f,0.0f);
glvertex3f
(100.0f,130.0f,0.0f);
glend();
glbegin
(gl_line_strip);
glvertex3f
(0.0f,0.0f,0.0f);
glvertex3f
(10.0f,10.0f,0.0f);
glvertex3f
(20.0f,5.0f,0.0f);
glend();
// 4.畫封閉式直線
glbegin
(gl_line_loop);
glvertex3f
(125.0f,150.0f,0.0f);
glvertex3f
(200.0f,150.0f,0.0f);
glvertex3f
(200.0f,130.0f,0.0f);
glend();
// 畫虛線
glenable
(gl_line_stipple);
gllinestipple(1
,0x00ff
);//第乙個引數是倍數，第二個引數是乙個十六進製制數，用來表示如何顯示的
glbegin
(gl_lines);
glvertex3f
(25.0f,120.0f,0.0f);
glvertex3f
(225.0f,120.0f,0.0f);
glend();
gllinewidth(3);
gllinestipple(1,
0xff0c
);
glbegin
(gl_lines);
glvertex3f
(25.0f,80.0f,0.0f);
glvertex3f
(225.0f,80.0f,0.0f);
glend();
gllinestipple(4,
0xff0c
);
glbegin
(gl_lines);
glvertex3f
(25.0f,40.0f,0.0f);
glvertex3f
(225.0f,40.0f,0.0f);
glend();
gldisable
(gl_line_stipple);
//重新整理opengl命令佇列
glflush();
}//改變大小時呼叫的函式
void changesize(glsizei w,glsizei h)
//設定視區尺寸
glviewport(0, 0, w, h);
//重置座標系統，使用投影變換復位
glmatrixmode
(gl_projection);
glloadidentity();
if (w<=h) else
glmatrixmode(
gl_modelview);
glloadidentity(); }
//用於初始化，常用來設定場景的渲染狀態
void setuprc(void)
int main(int argc,char** argv)
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