public static Bitmap CreateLineBitmap(ERectangleF rctLine, Color clrBg, Color clrPen, float penWidth, out EPointF locOffset)
{
//Because GDI+ arrows are so limited
Bitmap bmp = null;
locOffset = new EPointF();
if (rctLine.Width != 0 && rctLine.Height != 0)
{
bmp = new Bitmap((int)Math.Abs(rctLine.Width) + 1, (int)Math.Abs(rctLine.Height) + 1, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
Graphics g = Graphics.FromImage(bmp);
g.FillRectangle(new SolidBrush(clrBg), 0, 0, bmp.Width, bmp.Height);
ERectangleF rctOrigo = rctLine.Copy();
rctOrigo.MakeTopLeftAtOrigo();
Pen pen = new Pen(clrPen, penWidth);
g.DrawLine(pen, rctOrigo.X, rctOrigo.Y, rctOrigo.X + rctOrigo.Width, rctOrigo.Y + rctOrigo.Height);
g.Dispose();
if (rctOrigo.Width < 0)
{
locOffset.X = rctOrigo.Width;
}
if (rctOrigo.Height < 0)
{
locOffset.Y = rctOrigo.Height;
}
}
return(bmp);
}
public static Bitmap CreateLineBitmap(ERectangleF rctLine, Color clrBg, Color clrPen, float penWidth, out EPointF locOffset)
{
//Because GDI+ arrows are so limited
Bitmap bmp = null;
locOffset = new EPointF();
if (rctLine.Width != 0 && rctLine.Height != 0)
{
bmp = new Bitmap((int)Math.Abs(rctLine.Width)+1, (int)Math.Abs(rctLine.Height)+1, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
Graphics g = Graphics.FromImage(bmp);
g.FillRectangle(new SolidBrush(clrBg), 0,0,bmp.Width,bmp.Height);
ERectangleF rctOrigo = rctLine.Copy();
rctOrigo.MakeTopLeftAtOrigo();
Pen pen = new Pen(clrPen, penWidth);
g.DrawLine(pen, rctOrigo.X, rctOrigo.Y, rctOrigo.X+rctOrigo.Width, rctOrigo.Y+rctOrigo.Height);
g.Dispose();
if (rctOrigo.Width < 0)
locOffset.X = rctOrigo.Width;
if (rctOrigo.Height < 0)
locOffset.Y = rctOrigo.Height;
}
return bmp;
}
private void PlayerBall_MouseEvent(Sprite sender, System.Windows.Forms.MouseEventArgs e, MouseEventType t)
{
if (t == Sprite.MouseEventType.Down)
{
forceMarker.Visible = true;
}
else if (t == Sprite.MouseEventType.StillDown)
{
MemberSpriteBitmap mb = forceMarker.Member;
if (mb != null)
{
mb.Dispose();
}
//this.MouseDownLoc.X, this.MouseDownLoc.Y
ERectangleF rctLine = ERectangleF.FromLTRB(this.Loc.X, this.Loc.Y, this.MouseLastLoc.X, this.MouseLastLoc.Y);
forceVector = rctLine.Size;
if (rctLine.Width != 0 && rctLine.Height != 0)
{
Bitmap bmp = new Bitmap((int)Math.Abs(rctLine.Width) + 1, (int)Math.Abs(rctLine.Height) + 1, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
Graphics g = Graphics.FromImage(bmp);
ERectangleF rctOrigo = rctLine.Copy();
rctOrigo.MakeTopLeftAtOrigo();
Pen pen = new Pen(Color.Red, 2);
g.DrawLine(pen, rctOrigo.X, rctOrigo.Y, rctOrigo.X + rctOrigo.Width, rctOrigo.Y + rctOrigo.Height);
g.Dispose();
EPointF locOffset = new EPointF();
if (rctOrigo.Width < 0)
{
locOffset.X = rctOrigo.Width;
}
if (rctOrigo.Height < 0)
{
locOffset.Y = rctOrigo.Height;
}
mb = new MemberSpriteBitmap(bmp);
forceMarker.Member = mb;
forceMarker.Loc = this.Loc + locOffset;
}
else
{
forceMarker.Member = null;
}
}
else if (t == Sprite.MouseEventType.UpOutside || t == Sprite.MouseEventType.Click)
{
this.Velocity = forceVector * -0.1f;
forceMarker.Visible = false;
MemberSpriteBitmap mb = forceMarker.Member;
if (mb != null)
{
forceMarker.Member = null;
mb.Dispose();
}
}
}
public static bool CalcCircleLineCollision(EPointF circleLoc, float radius, EPointF circleMovement, ERectangleF lineRect, out EPointF pntFirstCollision, out EPointF circleLocAtCollision)
{
//first calc two lines parallel with line, at radius distance from it
double dAngleLine = Math.Atan2((double)lineRect.Width, -(double)lineRect.Height);
double dAnglePerp = dAngleLine+Math.PI/2;
EPointF pntOffset = new EPointF(radius*(float)Math.Sin(dAnglePerp), -radius*(float)Math.Cos(dAnglePerp));
ERectangleF lineRect1 = lineRect;
ERectangleF circleMovementLine = new ERectangleF(circleLoc, new EPointF(circleMovement.X, circleMovement.Y));
float fTimeFirstCollision = 1000;
pntFirstCollision = new EPointF(0,0);
circleLocAtCollision = new EPointF(0,0);
for (int i = -1; i < 2; i+=2)
{
ERectangleF lineRectParallel = lineRect.Copy();
lineRectParallel.Offset(pntOffset.X*i, pntOffset.Y*i);
EPointF pntCollision;
if (CalcLineLineCollision(circleMovementLine, lineRectParallel, out pntCollision))
{
EPointF pntDiff = new EPointF(pntCollision.X-circleMovementLine.X, pntCollision.Y-circleMovementLine.Y); //circleMovementLine.Left, pntCollision.Y-circleMovementLine.Top
float fTimeCollision = Endogine.Collision.PointLine.PointIsWhereOnLine(pntDiff, circleMovementLine);
if (fTimeCollision < fTimeFirstCollision)
{
fTimeFirstCollision = fTimeCollision;
pntFirstCollision = new EPointF(pntCollision.X-pntOffset.X*i, pntCollision.Y-pntOffset.Y*i);
circleLocAtCollision = pntCollision;
}
}
}
//also calc circle/circle collision (for line end points)
ArrayList aLocs, aTimes;
EPointF pntLinePointToTest = lineRect.Location;
for (int i = 0; i < 2; i++)
{
if (CalcCircleCircleCollisions(circleLoc, pntLinePointToTest, circleMovement, new EPointF(0,0), radius, 0, out aLocs, out aTimes))
{
EPointF pntCollision = (EPointF)aLocs[0];
float fTimeCollision = (float)aTimes[0];
if (fTimeCollision < 0)
{
fTimeCollision = (float)aTimes[1];
if (fTimeCollision < 0 || fTimeCollision > 1)
continue;
pntCollision = (EPointF)aLocs[1];
}
if (fTimeCollision < fTimeFirstCollision)
{
fTimeFirstCollision = fTimeCollision;
pntFirstCollision = pntLinePointToTest;
circleLocAtCollision = new EPointF(circleLoc.X+circleMovement.X*fTimeCollision, circleLoc.Y+circleMovement.Y*fTimeCollision);
}
}
pntLinePointToTest = new EPointF(lineRect.X+lineRect.Width, lineRect.Y+lineRect.Height); //lineRect.Left+lineRect.Width, lineRect.Top
}
if (fTimeFirstCollision <= 1)
return true;
return false;
}
public static bool CalcCircleLineCollision(EPointF circleLoc, float radius, EPointF circleMovement, ERectangleF lineRect, out EPointF pntFirstCollision, out EPointF circleLocAtCollision)
{
//first calc two lines parallel with line, at radius distance from it
double dAngleLine = Math.Atan2((double)lineRect.Width, -(double)lineRect.Height);
double dAnglePerp = dAngleLine + Math.PI / 2;
EPointF pntOffset = new EPointF(radius * (float)Math.Sin(dAnglePerp), -radius * (float)Math.Cos(dAnglePerp));
ERectangleF lineRect1 = lineRect;
ERectangleF circleMovementLine = new ERectangleF(circleLoc, new EPointF(circleMovement.X, circleMovement.Y));
float fTimeFirstCollision = 1000;
pntFirstCollision = new EPointF(0, 0);
circleLocAtCollision = new EPointF(0, 0);
for (int i = -1; i < 2; i += 2)
{
ERectangleF lineRectParallel = lineRect.Copy();
lineRectParallel.Offset(pntOffset.X * i, pntOffset.Y * i);
EPointF pntCollision;
if (CalcLineLineCollision(circleMovementLine, lineRectParallel, out pntCollision))
{
EPointF pntDiff = new EPointF(pntCollision.X - circleMovementLine.X, pntCollision.Y - circleMovementLine.Y); //circleMovementLine.Left, pntCollision.Y-circleMovementLine.Top
float fTimeCollision = Endogine.Collision.PointLine.PointIsWhereOnLine(pntDiff, circleMovementLine);
if (fTimeCollision < fTimeFirstCollision)
{
fTimeFirstCollision = fTimeCollision;
pntFirstCollision = new EPointF(pntCollision.X - pntOffset.X * i, pntCollision.Y - pntOffset.Y * i);
circleLocAtCollision = pntCollision;
}
}
}
//also calc circle/circle collision (for line end points)
ArrayList aLocs, aTimes;
EPointF pntLinePointToTest = lineRect.Location;
for (int i = 0; i < 2; i++)
{
if (CalcCircleCircleCollisions(circleLoc, pntLinePointToTest, circleMovement, new EPointF(0, 0), radius, 0, out aLocs, out aTimes))
{
EPointF pntCollision = (EPointF)aLocs[0];
float fTimeCollision = (float)aTimes[0];
if (fTimeCollision < 0)
{
fTimeCollision = (float)aTimes[1];
if (fTimeCollision < 0 || fTimeCollision > 1)
{
continue;
}
pntCollision = (EPointF)aLocs[1];
}
if (fTimeCollision < fTimeFirstCollision)
{
fTimeFirstCollision = fTimeCollision;
pntFirstCollision = pntLinePointToTest;
circleLocAtCollision = new EPointF(circleLoc.X + circleMovement.X * fTimeCollision, circleLoc.Y + circleMovement.Y * fTimeCollision);
}
}
pntLinePointToTest = new EPointF(lineRect.X + lineRect.Width, lineRect.Y + lineRect.Height); //lineRect.Left+lineRect.Width, lineRect.Top
}
if (fTimeFirstCollision <= 1)
{
return(true);
}
return(false);
}