public static float Distance(float pX1, float pY1, float pX2, float pY2)
{
float dX = pX2 - pX1;
float dY = pY2 - pY1;
return(FloatMath.Sqrt((dX * dX) + (dY * dY)));
}
public static float[] RotateAroundCenter(float[] pVertices, float pRotation, float pRotationCenterX, float pRotationCenterY)
{
if (pRotation != 0)
{
float rotationRad = MathUtils.DegToRad(pRotation);
float sinRotationRad = FloatMath.Sin(rotationRad);
float cosRotationInRad = FloatMath.Cos(rotationRad);
for (int i = pVertices.Length - 2; i >= 0; i -= 2)
{
float pX = pVertices[i];
float pY = pVertices[i + 1];
pVertices[i] = pRotationCenterX + (cosRotationInRad * (pX - pRotationCenterX) - sinRotationRad * (pY - pRotationCenterY));
pVertices[i + 1] = pRotationCenterY + (sinRotationRad * (pX - pRotationCenterX) + cosRotationInRad * (pY - pRotationCenterY));
}
}
return(pVertices);
}
/**
* Not tested for now!
*/
//@Deprecated
/// <summary>
/// Decprecated and untested
/// </summary>
/// <param name="IShape"></param>
public void accelerateRespectingRotation(/* final */ IShape pShape, /* final */ float pAccelerationX, /* final */ float pAccelerationY)
{
/* final */
float rotation = pShape.GetRotation();
/* final */
float rotationRad = MathUtils.DegToRad(rotation);
/* final */
float sin = FloatMath.Sin(rotationRad);
/* final */
float cos = FloatMath.Cos(rotationRad);
/* final */
float accelerationX = sin * -pAccelerationY + cos * pAccelerationX;
/* final */
float accelerationY = cos * pAccelerationY + sin * pAccelerationX;
pShape.SetAcceleration(accelerationX, accelerationY);
}
// ===========================================================
// Constants
// ===========================================================
// ===========================================================
// Fields
// ===========================================================
// ===========================================================
// Constructors
// ===========================================================
// ===========================================================
// Getter & Setter
// ===========================================================
// ===========================================================
// Methods for/from SuperClass/Interfaces
// ===========================================================
/**
* Not tested for now!
*/
// @Deprecated
/// <summary>
/// Deprecated and untested
/// </summary>
/// <param name="IShape"></param>
public void setVelocityRespectingRotation(/* final */ IShape pShape, /* final */ float pVelocityX, /* final */ float pVelocityY)
{
/* final */
float rotation = pShape.GetRotation();
/* final */
float rotationRad = MathUtils.DegToRad(rotation);
/* final */
float sin = FloatMath.Sin(rotationRad);
/* final */
float cos = FloatMath.Cos(rotationRad);
/* final */
float velocityX = sin * -pVelocityY + cos * pVelocityX;
/* final */
float velocityY = cos * pVelocityY + sin * pVelocityX;
pShape.SetVelocity(velocityX, velocityY);
}
