public CCRotateAroundToState(CCRotateAroundTo action, CCNode target)
: base(action, target)
{
DistanceAngle = action.DistanceAngle;
Origin = action.Origin;
StartPosition = target.Position;
RotationDirection = action.RotationDirection;
offsetX = StartPosition.X - Origin.X;
offsetY = StartPosition.Y - Origin.Y;
// Calculate the Starting Angle of the target in relation to the Origin in which it is to rotate
// Math.Atan2 returns the mathematical angle which is counter-clockwise [-Math.PI, +Math.PI]
StartAngle = CCMathHelper.ToDegrees((float)Math.Atan2(offsetY, offsetX));
// Map value [0,360]
StartAngle = (StartAngle + 360) % 360;
// Now we work out how far we actually have to rotate
DiffAngle = DistanceAngle - StartAngle;
// Map value [0,360] and take into consideration the direction of rotation - CCW or CW
DiffAngle = (DiffAngle + 360 * RotationDirection) % 360;
theta = CCMathHelper.ToRadians(DiffAngle);
}
public void reset()
{
_speed = 50;
_pivot = new CCPoint(-1, 1);
_rotationOrientation = ROTATE_NONE;
Rotation = -90;
_targetRotation = -90;
float angle = CCMathHelper.ToRadians(RotationX);
_vector = new CCPoint(_speed * (float)Math.Cos(angle),
-_speed * (float)Math.Sin(angle));
}
public virtual void UpdateVelocity(CCPoint point)
{
// Calculate distance and angle from the center.
float dx = point.X - PositionX;
float dy = point.Y - PositionY;
dycache = dy;
float dSq = dx * dx + dy * dy;
if (dSq <= DeadRadiusSq)
{
Velocity = CCPoint.Zero;
Degrees = 0.0f;
StickPosition = Center;
return;
}
float angle = (float)Math.Atan2(dy, dx); // in radians
if (angle < 0)
{
angle += CCMathHelper.TwoPi;
}
float cosAngle;
float sinAngle;
if (isDPad)
{
float anglePerSector = 360.0f / CCMathHelper.ToRadians(NumberOfDirections); // NumberOfDirections * ((float)Math.PI / 180.0f);
angle = (float)Math.Round(angle / anglePerSector) * anglePerSector;
}
cosAngle = CCMathHelper.Cos(angle);
sinAngle = CCMathHelper.Sin(angle);
// NOTE: Velocity goes from -1.0 to 1.0.
if (dSq > JoystickRadiusSq || isDPad)
{
dx = cosAngle * joystickRadius;
dy = sinAngle * joystickRadius;
}
Velocity = new CCPoint(dx / joystickRadius, dy / joystickRadius);
Degrees = CCMathHelper.ToDegrees(angle);
// Update the thumb's position
var newLoc = new CCPoint(dx + ContentSize.Width / 2, dy + ContentSize.Height / 2);
StickPosition = newLoc;
}
void UpdateAbsolutePoints()
{
var absolutePosition = this.PositionWorldspace;
var rotationInClockwiseRadians = CCMathHelper.ToRadians(this.Rotation);
// In this context, CocosSharp uses clockwise rotation, the opposite of mathematical rotation
// So let's invert it so we get rotation in counterclockwise units:
var rotationInRadians = -rotationInClockwiseRadians;
CCPoint rotatedXAxis = new CCPoint((float)System.Math.Cos(rotationInRadians), (float)System.Math.Sin(rotationInRadians));
CCPoint rotatedYAxis = new CCPoint(-rotatedXAxis.Y, rotatedXAxis.X);
for (int i = 0; i < points.Length; i++)
{
absolutePoints [i] =
absolutePosition +
(rotatedXAxis * points [i].X) +
(rotatedYAxis * points [i].Y);
}
}
void PositionMonkey()
{
// We start our rotation with an offset of 230,0 from the origin 0 degrees
// and randomly position the monkey
var startingAngle = CCRandom.GetRandomInt(-360, 360);
monkey.Position = CCPoint.RotateByAngle(origin + new CCPoint(230, 0), origin, CCMathHelper.ToRadians(startingAngle));
positioned = true;
}
protected override void Draw()
{
base.Draw();
CCColor4B color = new CCColor4B(1.0f, 1.0f, 1.0f, 1.0f);
CCDrawingPrimitives.Begin();
switch (_lineType)
{
case lineTypes.LINE_NONE:
break;
case lineTypes.LINE_TEMP:
//CCDrawingPrimitives.Begin();
CCDrawingPrimitives.DrawLine(_tip, _pivot, color);
CCDrawingPrimitives.DrawCircle(_pivot, 10, CCMathHelper.ToRadians(360), 10, false, color);
//CCDrawingPrimitives.End();
break;
case lineTypes.LINE_DASHED:
//CCDrawingPrimitives.Begin();
CCDrawingPrimitives.DrawCircle(_pivot, 10, (float)Math.PI, 10, false, color);
//CCDrawingPrimitives.End();
int segments = (int)(_lineLength / (_dash + _dashSpace));
float t = 0.0f;
float x_;
float y_;
for (int i = 0; i < segments + 1; i++)
{
x_ = _pivot.X + t * (_tip.X - _pivot.X);
y_ = _pivot.Y + t * (_tip.Y - _pivot.Y);
//CCDrawingPrimitives.Begin();
CCDrawingPrimitives.DrawCircle(new CCPoint(x_, y_), 4, (float)Math.PI, 6, false, color);
//CCDrawingPrimitives.End();
t += (float)1 / segments;
}
break;
}
//draw energy bar
color = new CCColor4B(0.0f, 0.0f, 0.0f, 1.0f);
CCDrawingPrimitives.DrawLine(
new CCPoint(_energyLineX, _screenSize.Height * 0.1f),
new CCPoint(_energyLineX, _screenSize.Height * 0.9f),
color);
color = new CCColor4B(1.0f, 0.5f, 0.0f, 1.0f);
CCDrawingPrimitives.DrawLine(
new CCPoint(_energyLineX, _screenSize.Height * 0.1f),
new CCPoint(_energyLineX, _screenSize.Height * 0.1f + _energy * _energyHeight),
color);
CCDrawingPrimitives.End();
}
void CreateGeometry()
{
var windowSize = Layer.VisibleBoundsWorldspace.Size;
// Draw 10 circles
for (int i = 0; i < 10; i++)
{
drawBuffer.DrawSolidCircle(windowSize.Center, 10 * (10 - i),
new CCColor4F(CCRandom.Float_0_1(), CCRandom.Float_0_1(), CCRandom.Float_0_1(), 1));
}
// Draw polygons
CCPoint[] points = new CCPoint[]
{
new CCPoint(windowSize.Height / 4, 0),
new CCPoint(windowSize.Width, windowSize.Height / 5),
new CCPoint(windowSize.Width / 3 * 2, windowSize.Height)
};
drawBuffer.DrawPolygon(points, points.Length, new CCColor4F(1.0f, 0, 0, 0.5f), 4, new CCColor4F(0, 0, 1, 1));
// star poly (triggers buggs)
{
const float o = 80;
const float w = 20;
const float h = 50;
CCPoint[] star = new CCPoint[]
{
new CCPoint(o + w, o - h), new CCPoint(o + w * 2, o), // lower spike
new CCPoint(o + w * 2 + h, o + w), new CCPoint(o + w * 2, o + w * 2), // right spike
};
drawBuffer.DrawPolygon(star, star.Length, new CCColor4F(1, 0, 0, 0.5f), 1, new CCColor4F(0, 0, 1, 1));
}
// star poly (doesn't trigger bug... order is important un tesselation is supported.
{
const float o = 180;
const float w = 20;
const float h = 50;
var star = new CCPoint[]
{
new CCPoint(o, o), new CCPoint(o + w, o - h), new CCPoint(o + w * 2, o), // lower spike
new CCPoint(o + w * 2 + h, o + w), new CCPoint(o + w * 2, o + w * 2), // right spike
new CCPoint(o + w, o + w * 2 + h), new CCPoint(o, o + w * 2), // top spike
new CCPoint(o - h, o + w), // left spike
};
drawBuffer.DrawPolygon(star, star.Length, new CCColor4F(1, 0, 0, 0.5f), 1, new CCColor4F(0, 0, 1, 1));
}
// Draw segment
drawBuffer.DrawLine(new CCPoint(20, windowSize.Height), new CCPoint(20, windowSize.Height / 2), 10, new CCColor4F(0, 1, 0, 1), DrawNodeBuffer.LineCap.Round);
drawBuffer.DrawLine(new CCPoint(10, windowSize.Height / 2), new CCPoint(windowSize.Width / 2, windowSize.Height / 2), 40,
new CCColor4F(1, 0, 1, 0.5f), DrawNodeBuffer.LineCap.Round);
CCSize size = VisibleBoundsWorldspace.Size;
var visibleRect = VisibleBoundsWorldspace;
// draw quad bezier path
drawBuffer.DrawQuadBezier(new CCPoint(0, size.Height),
visibleRect.Center,
(CCPoint)visibleRect.Size,
50, 3,
new CCColor4B(255, 0, 255, 255));
// draw cubic bezier path
drawBuffer.DrawCubicBezier(visibleRect.Center,
new CCPoint(size.Width / 2 + 30, size.Height / 2 + 50),
new CCPoint(size.Width / 2 + 60, size.Height / 2 - 50),
new CCPoint(size.Width, size.Height / 2), 100, 2, CCColor4B.Green);
// draw an ellipse within rectangular region
drawBuffer.DrawEllipse(new CCRect(100, 300, 100, 200), 8, CCColor4B.AliceBlue);
var splinePoints = new List <CCPoint>();
splinePoints.Add(new CCPoint(0, 0));
splinePoints.Add(new CCPoint(50, 70));
splinePoints.Add(new CCPoint(0, 140));
splinePoints.Add(new CCPoint(100, 210));
splinePoints.Add(new CCPoint(0, 280));
splinePoints.Add(new CCPoint(150, 350));
int numberOfSegments = 64;
float tension = .05f;
drawBuffer.DrawCardinalSpline(splinePoints, tension, numberOfSegments);
drawBuffer.DrawSolidArc(
pos: new CCPoint(350, windowSize.Height * 0.75f),
radius: 100,
startAngle: CCMathHelper.ToRadians(45),
sweepAngle: CCMathHelper.Pi / 2, // this is in radians, clockwise
color: CCColor4B.Aquamarine);
}