ios 美元飘落效果的demo
demo功能：ios 美元飘落效果的demo 。
demo说明：美元飘落效果demo ，可以多指触控，触控点越多，飘落的美元面额越大。主要代码在：mainview.m中。
demo截屏：
demo代码说明：
[csharp]
- (void)ontimer
{
uiimageview *dollarview;
uiimage *dollarimage;
// for effect... make it harder to get some of the other bill index's
// if it does not pass criteria reset back to 1
// double tap upside down for 5 dollar bill
if(billindex > 2) {
if (devicetilt.y > 0.5f)
billindex = 5;
else
billindex = 1;
}
else if(billindex > 1) {
if (devicetilt.x > 0.5f)
billindex = 3;
else if (devicetilt.x < -0.5f)
billindex = 4;
else
billindex = 2;
}
switch (billindex) {
case 2:
dollarimage = [uiimage imagenamed:@"dol2.png"];
break;
case 3:
dollarimage = [uiimage imagenamed:@"5dol.jpg"];
break;
case 4:
dollarimage = [uiimage imagenamed:@"10dol.jpg"];
break;
case 5:
dollarimage = [uiimage imagenamed:@"20dol.jpg"];
break;
default:
dollarimage = [uiimage imagenamed:@"dollar.png"];
break;
}
//以上是检测触点，并分配不同的美元图片
// for effect only draw one 2 dollar bill by resetting billindex
if (billindex == 2)
billindex = 1;
//以下是动画部分的核心代码
dollarview = [[uiimageview alloc] initwithimage:dollarimage];
int scale = random_int(1, 5);
int width = 100*scale;
int height = 44*scale;
if(useemitterrect) {
dollarview.frame = emitterrect;
//} else if (devicetilt.x > 0.5f || devicetilt.y > 0.5f || devicetilt.x < -0.5f || devicetilt.y < -0.5f) {
} else if (devicetilt.y > 0.5f) {
dollarview.frame = cgrectmake(160 - (width/2), 490, width, height);
} else if (devicetilt.y < -0.5f) {
dollarview.frame = cgrectmake(160 - (width/2), -(height+10), width, height);
} else if (devicetilt.x > 0.5f) {
dollarview.frame = cgrectmake(-(width+10), 240-(height/2), width, height);
} else if (devicetilt.x < -0.5f) {
dollarview.frame = cgrectmake(330, 240-(height/2), width, height);
} else {
switch (random_int(0, 3)) {
case 0:
dollarview.frame = cgrectmake(-300, -300, 100*scale, 44*scale);
break;
case 1:
dollarview.frame = cgrectmake(470, -150, 100*scale, 44*scale);
break;
case 3:
dollarview.frame = cgrectmake(470, 630, 100*scale, 44*scale);
break;
default:
dollarview.frame = cgrectmake(-150, 630, 100*scale, 44*scale);
break;
}
}
[self addsubview:dollarview];
if(helpview)
[self bringsubviewtofront:helpview];
[uiview beginanimations:nil context:dollarview];
[uiview setanimationduration:2];
dollarview.frame = cgrectmake(random_int(-50, 370), random_int(-25, 665), 100, 44);
int radians = random_int(0, 360) * 0.0174532925;
[dollarview settransform:cgaffinetransformmakerotation(radians)];
[uiview setanimationdelegate:self];
[uiview commitanimations];
billcount++;
[billlist addobject:dollarview];
if([billlist count] >= max_bills) {
uiimageview* oldbill = (uiimageview*)[billlist objectatindex:0];
[billlist removeobjectatindex:0];
[uiview beginanimations:nil context:oldbill];
[uiview setanimationduration:2];
[oldbill setalpha:0.0];
[uiview setanimationdelegate:self];
[uiview setanimationdidstopselector:@selector(goputthemback:finished:context:)];
[uiview commitanimations];
}
}
- (void)ontimer
{
uiimageview *dollarview;
uiimage *dollarimage;
// for effect... make it harder to get some of the other bill index's
// if it does not pass criteria reset back to 1
// double tap upside down for 5 dollar bill
if(billindex > 2) {
if (devicetilt.y > 0.5f)
billindex = 5;
else
billindex = 1;
}
else if(billindex > 1) {
if (devicetilt.x > 0.5f)
billindex = 3;
else if (devicetilt.x < -0.5f)
billindex = 4;
else
billindex = 2;
}
switch (billindex) {
case 2:
dollarimage = [uiimage imagenamed:@"dol2.png"];
break;
case 3:
dollarimage = [uiimage imagenamed:@"5dol.jpg"];
break;
case 4:
dollarimage = [uiimage imagenamed:@"10dol.jpg"];
break;
case 5:
dollarimage = [uiimage imagenamed:@"20dol.jpg"];
break;
default:
dollarimage = [uiimage imagenamed:@"dollar.png"];
break;
}
//以上是检测触点，并分配不同的美元图片
// for effect only draw one 2 dollar bill by resetting billindex
if (billindex == 2)
billindex = 1;
//以下是动画部分的核心代码
dollarview = [[uiimageview alloc] initwithimage:dollarimage];
int scale = random_int(1, 5);
int width = 100*scale;
int height = 44*scale;
if(useemitterrect) {
dollarview.frame = emitterrect;
//} else if (devicetilt.x > 0.5f || devicetilt.y > 0.5f || devicetilt.x < -0.5f || devicetilt.y < -0.5f) {
} else if (devicetilt.y > 0.5f) {
dollarview.frame = cgrectmake(160 - (width/2), 490, width, height);
} else if (devicetilt.y < -0.5f) {
dollarview.frame = cgrectmake(160 - (width/2), -(height+10), width, height);
} else if (devicetilt.x > 0.5f) {
dollarview.frame = cgrectmake(-(width+10), 240-(height/2), width, height);
} else if (devicetilt.x < -0.5f) {
dollarview.frame = cgrectmake(330, 240-(height/2), width, height);
} else {
switch (random_int(0, 3)) {
case 0:
dollarview.frame = cgrectmake(-300, -300, 100*scale, 44*scale);
break;
case 1:
dollarview.frame = cgrectmake(470, -150, 100*scale, 44*scale);
break;
case 3:
dollarview.frame = cgrectmake(470, 630, 100*scale, 44*scale);
break;
default:
dollarview.frame = cgrectmake(-150, 630, 100*scale, 44*scale);
break;
}
}
[self addsubview:dollarview];
if(helpview)
[self bringsubviewtofront:helpview];
[uiview beginanimations:nil context:dollarview];
[uiview setanimationduration:2];
dollarview.frame = cgrectmake(random_int(-50, 370), random_int(-25, 665), 100, 44);
int radians = random_int(0, 360) * 0.0174532925;
[dollarview settransform:cgaffinetransformmakerotation(radians)];
[uiview setanimationdelegate:self];
[uiview commitanimations];
billcount++;
[billlist addobject:dollarview];
if([billlist count] >= max_bills) {
uiimageview* oldbill = (uiimageview*)[billlist objectatindex:0];
[billlist removeobjectatindex:0];
[uiview beginanimations:nil context:oldbill];
[uiview setanimationduration:2];
[oldbill setalpha:0.0];
[uiview setanimationdelegate:self];
[uiview setanimationdidstopselector:@selector(goputthemback:finished:context:)];
[uiview commitanimations];
}
}