void fb_drawwline(PFBDEV pFbdev,int x, int y, u32_t color)
{
int i;
for (i = 0; i < pFbdev->fb_var.yres; i++)
{
fb_drawpixel(pFbdev,i,384,0x0000ff00);
}
}
int mouse_restore(const pinfo_t fb, int x, int y)
{
int i, j;
for (j = 0; j < C_HEIGHT; ++j)
for (i = 0; i < C_WIDTH; ++i)
fb_drawpixel(fb, x+i, y+j, save_cursor[i + j*C_WIDTH]);
return 0;
}
void fb_drawvline(PFBDEV pFbdev,int x, int y, u32_t color)
{
int i;
for (i = 0; i < pFbdev->fb_var.yres; i++)
{
fb_drawpixel(pFbdev,x,i,color);
}
}
void fb_drawxline(PFBDEV pFbdev,int x,int y,u32_t color)
{
int i=0;
int j=0;
for (i=0, j=0; i<1024, j<768; i++, j++)
{
fb_drawpixel(pFbdev,i,j,color);
}
}
int mouse_draw(const pinfo_t fb, int x, int y)
{
int i, j;
mouse_save(fb, x, y);
for (j = 0; j < C_HEIGHT; ++j)
for (i = 0; i < C_WIDTH; ++i)
if (cursor_pixel[i + j*C_WIDTH] != T___)
fb_drawpixel(fb, x+i, y+j, cursor_pixel[i + j*C_WIDTH]);
return 0;
}
void main(void)
{
FBDEV fbdev;
memset(&fbdev,0,sizeof(FBDEV));
strcpy(fbdev.dev,"/dev/fb0");
if (fb_open(&fbdev) == FALSE)
{
printf("open frame buffer error\n");
return ;
}
fb_memset((void *)(fbdev.fb_mem + fbdev.fb_mem_offset),0,fbdev.fb_fix.smem_len);
//画点得函数：
fb_drawpixel(&fbdev,512,384,0x00ff0000);
fb_drawpixel(&fbdev,513,384,0x00ff0000);
fb_drawpixel(&fbdev,512,385,0x00ff0000);
fb_drawpixel(&fbdev,513,385,0x00ff0000);
//画直线得函数：
//fb_drawline(&fbdev,200,100,0x0000ff00);
fb_line(&fbdev,100,200,300,500,0x000000ff);
fb_circle(&fbdev,512,348,50,0x00ff0000);
fb_close(&fbdev);
getchar();
}
void fb_drawline(PFBDEV pFbdev,int x,int y,u32_t color)
{
int i;
int j;
for (i = 0; i < pFbdev->fb_var.yres; i++)
{
fb_drawpixel(pFbdev,x,i,color);
}
for (i = 0; i < pFbdev->fb_var.xres; i++)
{
fb_drawpixel(pFbdev,i,y,color);
}
for (i = y; i < pFbdev->fb_var.yres-y; i++)
{
for (j = x; j < pFbdev->fb_var.xres-x; j++)
{
if (i%10==9)
{
fb_drawpixel(pFbdev,j,i,0x00ff0000);
}
else if (j%10==9)
{
fb_drawpixel(pFbdev,j,i,0x00ff0000);
}
else
{
fb_drawpixel(pFbdev,j,i,color);
}
}
}
}
int fb_circle(PFBDEV pFbdev,int x0,int y0,int r,u32_t color)
{
int x = 0;
int y = r;
int p = 3-2*r;
while(x <= y)
{
//fb_line(pFbdev,x0+x,y0+y,x0-x,y0+y,color);
//fb_line(pFbdev,x0+y,y0+x,x0-y,y0+x,color);
//fb_line(pFbdev,x0+x,y0-y,x0-x,y0-y,color);
//fb_line(pFbdev,x0+y,y0-x,x0-y,y0-x,color);
fb_drawpixel(pFbdev,x0+x,y0+y,color);
fb_drawpixel(pFbdev,x0-y,y0+x,color);
fb_drawpixel(pFbdev,x0+x,y0-y,color);
fb_drawpixel(pFbdev,x0-y,y0-x,color);
fb_drawpixel(pFbdev,x0-x,y0+y,color);
fb_drawpixel(pFbdev,x0+y,y0+x,color);
fb_drawpixel(pFbdev,x0-x,y0-y,color);
fb_drawpixel(pFbdev,x0+y,y0-x,color);
if (p<0)
{
p += 4*x+6;
}
else
{
y--;
p += 4*(x-y)+10;
}
x++;
}
return 0;
}
void fb_drawhline(PFBDEV pFbdev,int x,int y,u32_t color)
{
int i;
for (i = 0; i < pFbdev->fb_var.xres; i++)
{
fb_drawpixel(pFbdev,i,y,color);
}
return;
int fb_line(int x1,int y1,int x2,int y2,u32_t color)
{
int dx=x2-x1;
int dy=y2-y1;
int p=0;
int inc=((dx*dy<0)?-1:1);
if(abs(dx)>abs(dy))
{
if(dx<0)
{
swap(&x1,&x2);
swap(&y1,&y2);
dx=-dx;
dy=-dy;
}
dy=abs(dy);
p=2*dy-dx;
while(x1<=x2)
{
fb_one_pixel(x1,y1,color);
x1++;
if(p<0)
{
p+=2*dy;
}
else
{ y1+=inc; p+=2*(dy-dx);
} } }
else { if(dy<0)
{ swap(&x1,&x2); swap(&y1,&y2);
dx=-dx; dy=-dy;
} dx=abs(dx); p=2*dx-dy;
while(y1<=y2) { fb_one_pixel(x1,y1,color);
y1++;
if(p<0)
{
p+=2*dx;
}
else
{
x1+=inc;
p+=2*(dx-dy);
}
} }
return 0;
int main(void)
{
FBDEV fbdev;
memset(&fbdev,0,sizeof(FBDEV));
strcpy(fbdev.dev,"/dev/fb0");
if (fb_open(&fbdev)==FALSE)
{
printf("open frame buffer error\n");
return;
}
fb_memset((void *)(fbdev.fb_mem + fbdev.fb_mem_offset),0,fbdev.fb_fix.smem_len);
//画点
fb_drawpixel(&fbdev,512,384,0x00FF0000);
fb_drawpixel(&fbdev,513,384,0x00FF0000);
fb_drawpixel(&fbdev,512,385,0x00FF0000);
fb_drawpixel(&fbdev,513,385,0x00FF0000);
//画垂直线
fb_drawvline(&fbdev,511,380,0x0000ff00);
fb_drawhline(&fbdev,380,200,0x000000ff);
fb_close(&fbdev);
getchar();
}
int fb_line(PFBDEV pFbdev,int x1,int y1,int x2,int y2,u32_t color)
{
int p = 0;
int dx = x2-x1;
int dy = y2-y1;
int inc = ((dx*dy<0)?-1:1);
if (abs(dx)>abs(dy))
{
if (dx < 0)
{
swap(&x1,&x2);
swap(&y1,&y2);
dx = -dx;
dy = -dy;
}
dy =abs(dy);
p = 2*dy-dx;
while(x1 <= x2)
{
fb_drawpixel(pFbdev,x1,y1,color);
x1++;
if (p<0)
{
p += 2*dy;
}
if (p>=0)
{
y1 += inc;
p += 2*(dy-dx);
}
}
}
else
{
if (dy < 0)
{
swap(&x1,&x2);
swap(&y1,&y2);
dx = -dx;
dy = -dy;
}
dx =abs(dx);
p = 2*dx-dy;
while(y1 <= y2)
{
fb_drawpixel(pFbdev,x1,y1,color);
y1++;
if (p<0)
{
p += 2*dx;
}
if (p>=0)
{
x1 += inc;
p += 2*(dx-dy);
}
}
}
return 0;
}
