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本帖最后由 单模先声 于 2016-4-5 14:49 编辑
#define countof(Obj) (sizeof(Obj) / sizeof(Obj[0]))
#define DEG2RAD (3.1415926f / 180)
#define MAG 4
static const GUI_COLOR ColorsScaleR140[] = {
0x000000, 0x00AA00, 0xFFFFFF, 0x0000AA,
0x00FF00, 0xAEAEAE, 0x737373, 0xD3D3D3,
0xDFDFDF, 0xBBDFBB, 0x6161DF, 0x61DF61,
0xBBBBDF, 0xC7C7C7, 0x616193
};
//μ÷é«°å
static const GUI_LOGPALETTE PalScaleR140 = {
15, //ìõÄ¿μÄêyá¿
0, //ÎTí¸Ã÷¶è
&ColorsScaleR140[0]
};
static const GUI_BITMAP bmScaleR140 = {
200, // XSize
73, // YSize
100, // BytesPerLine
4, // BitsPerPixel
acScaleR140, // Pointer to picture data (indices)
&PalScaleR140 // Pointer to palette
};
static const GUI_POINT _aNeedle[] = {
{ MAG * ( 0), MAG * ( 0 + 125) },
{ MAG * (-3), MAG * (-15 + 125) },
{ MAG * (-3), MAG * (-65 + 125) },
{ MAG * ( 3), MAG * (-65 + 125) },
{ MAG * ( 3), MAG * (-15 + 125) },
};
typedef struct
{
GUI_AUTODEV_INFO AutoDevInfo; // Information about what has to be displayed
GUI_POINT aPoints[7]; // Polygon data
float Angle;
} PARAM;
static float _GetAngle(int tDiff) {
if (tDiff < 15000) {
return 225 - 0.006 * tDiff ;
}
tDiff -= 15000;
if (tDiff < 7500) {
return 225 - 90 + 0.012 * tDiff ;
}
return 225;
}
//»æí¼
static void _Draw(void * p)
{
PARAM * pParam;
pParam = (PARAM *)p;
if (pParam->AutoDevInfo.DrawFixed) {
GUI_ClearRect (60, 80 + bmScaleR140.YSize, 60 + bmScaleR140.XSize - 1, 180);
GUI_DrawBitmap(&bmScaleR140, 60, 80);
}
GUI_SetColor(GUI_WHITE);
GUI_AA_FillPolygon(pParam->aPoints, countof(_aNeedle), MAG * 160, MAG * 220);
if (pParam->AutoDevInfo.DrawFixed) {
GUI_SetTextMode(GUI_TM_TRANS);
GUI_SetColor(GUI_RED);
GUI_SetFont(&GUI_Font24B_ASCII);
GUI_DispStringHCenterAt("RPM / 1000", 160, 140);
}
}
void _DemoScale(void)
{
GUI_AUTODEV AutoDev; // Object for banding memory device
PARAM Param; // Parameters for drawing routine
int Cnt;
int tDiff;
int t0;
//ÏÔê¾DÅÏ¢
GUI_SetBkColor(GUI_BLACK);
GUI_Clear();
GUI_SetColor(GUI_WHITE);
GUI_SetFont(&GUI_Font24_ASCII);
GUI_DispStringHCenterAt("MEMDEV_AutoDev - Sample", 160, 5);
GUI_SetFont(&GUI_Font8x16);
GUI_DispStringHCenterAt("Scale using GUI_AUTODEV-object", 160, 50);
//ê1Äü¸ß·Ö±æÂê¿1¾a3Y
GUI_AA_EnableHiRes();
GUI_AA_SetFactor(MAG);
while (1)
{
t0 = GUI_GetTime();
GUI_MEMDEV_CreateAuto(&AutoDev);
for (Cnt = 0; (tDiff = GUI_GetTime() - t0) < 24000; Cnt++)
{
Param.Angle = _GetAngle(tDiff)* DEG2RAD;
GUI_RotatePolygon(Param.aPoints, _aNeedle, countof(_aNeedle), Param.Angle);
GUI_MEMDEV_DrawAuto(&AutoDev, &Param.AutoDevInfo, &_Draw, &Param);
}
//ÏÔê¾milliseconds / pictureí¼Æ¬
GUI_SetColor(GUI_WHITE);
GUI_SetFont(&GUI_Font8x16);
GUI_DispStringHCenterAt("Milliseconds / picture:", 160, 200);
GUI_SetTextAlign(GUI_TA_CENTER);
GUI_SetTextMode(GUI_TM_NORMAL);
GUI_DispNextLine();
GUI_GotoX(160);
GUI_DispFloatMin((float)tDiff / (float)Cnt, 2);
GUI_MEMDEV_DeleteAuto(&AutoDev);
GUI_Delay(3000);
GUI_ClearRect(0, 70, 319, 239);
}
}
程序里有个PARAM结构体,找不到有给PARAM赋值的语句,没有赋值,那调用PARAM的函数不就是没用了?求大神解答
我来回答