Commonly used formula in Flash as3

Easing formula:

Sprite. x + = (targetx-Sprite. X) * easing; // easing is the easing coefficient variable.

Sprite. Y + = (targety-Sprite. Y) * easing;

Elastic formula:

VX + = (targetx-Sprite. X) * spring; // spring is the elastic coefficient.

Vy + = (targety-Sprite. Y) * spring;

Sprite. x + = (VX * = friction); // friction indicates Friction

Sprite. Y + = (Vy * = friction );

Offset elastic formula:

VaR DX: Number = Sprite. X-fixedx;

VaR DY: Number = Sprite. Y-fixedy;

VaR angle: Number = math. atan2 (dy, dx );

VaR targetx: Number = fixedx + math. Cos (angle) * springlength;

VaR targety: Number = fixedx + math. Sin (angle) * springlength;

Rotate to the mouse (or to a certain point)

DX = mousex-Sprite. X;

DY = mousey-Sprite. Y;

Sprite. Rotation = math. atan2 (dy, dx) * 180/Math. Pi;

Waveform motion:

Public Function onenterframe1 (Event: Event): void {

Ball. Y = centerscale + math. Sin (angle) * range;

Angle + = speed;

}

Heartbeat:

Public Function onenterframe1 (Event: Event): void {

Ball. scalex = centerscale + math. Sin (angle) * range;

Ball. scaley = centerscale + math. Sin (angle) * range;

Angle + = speed;

}

Center rotation:

Public Function onenterframe (Event: Event): void {

Ball. x = centerx + math. Cos (angle) * radius;

Ball. Y = centery + math. Sin (angle) * radius;

Angle + = speed;

}

Elliptical rotation:

Public Function onenterframe (Event: Event): void {

Ball. x = centerx + math. Cos (angle) * radiusx;

Ball. Y = centery + math. Sin (angle) * radiusy;

Angle + = speed;

}

The color operation returns the transparent value:

VaR T: uint = 0x77ff8877

VaR S: uint = 0xff000000

VaR H: uint = T & S

VaR M: uint = H >>> 24

Trace (m)

Convert to decimal:

Trace (hexvalue );

Convert decimal to hexadecimal:

Decimalvalue. tostring (16)

Color extraction:

Red = color24> 16;

Green = color24> 8 & 0xff;

Blue = color24 & 0xff;

Alpha = color32> 24;

Red = color32> 16 & 0xff;

Green = color32> 8 & 0xff;

Blue = color0000& 0xff;

Calculated by bit to obtain the color value:

Color24 = red <16 | green <8 | blue;

Color32 = Alpha <24 | red <16 | green <8 | blue;

Curve over control point:

// XT, yt is the point you want to draw through

// X0, y0 and X2, Y2 are the end points of the curve

X1 = XT * 2-(x0 + x2)/2;

Y1 = yt * 2-(y0 + y2)/2;

MoveTo (x0, y0 );

Curveto (x1, Y1, X2, Y2 );