/// <summary>
/// Draws the shapes onto the canvas, which is displayed afterwards
/// </summary>
protected override void OnDraw(Canvas canvas)
{
// Draw shapes
m_ShapeRadiusLeft.Draw(canvas);
m_ShapeRadiusRight.Draw(canvas);
m_ShapeStickLeft.Draw(canvas);
m_ShapeStickRight.Draw(canvas);
// Set paint for data text
Paint paint = new Paint();
paint.SetARGB(255, 0, 0, 0);
paint.TextSize = 20;
paint.TextAlign = Paint.Align.Center;
paint.StrokeWidth = 5;
// Draw data text for left joystick
canvas.DrawText("DATA LEFT JOYSTICK", m_LeftJS.CENTER_X, m_LeftJS.CENTER_Y - SCREEN_HEIGHT / 2 - 30, paint);
canvas.DrawText("Throttle " + m_LeftJS.GetThrottleValue(), m_LeftJS.CENTER_X, m_LeftJS.CENTER_Y - SCREEN_HEIGHT / 2, paint);
canvas.DrawText("Rotation " + m_LeftJS.GetRotationValue(), m_LeftJS.CENTER_X, m_LeftJS.CENTER_Y - SCREEN_HEIGHT / 2 + 30, paint);
canvas.DrawText("Angle is " + m_LeftJS.GetAngle() + " °", m_LeftJS.CENTER_X, m_LeftJS.CENTER_Y - SCREEN_HEIGHT / 2 + 60, paint);
canvas.DrawText("Direction is " + m_LeftJS.GetDirection(), m_LeftJS.CENTER_X, m_LeftJS.CENTER_Y - SCREEN_HEIGHT / 2 + 90, paint);
// Draw data text for right joystick
canvas.DrawText("DATA RIGHT JOYSTICK", m_RightJS.CENTER_X, m_RightJS.CENTER_Y - SCREEN_HEIGHT / 2 - 30, paint);
canvas.DrawText("Power is " + m_RightJS.GetPower() + " %", m_RightJS.CENTER_X, m_RightJS.CENTER_Y - SCREEN_HEIGHT / 2, paint);
canvas.DrawText("Abs is " + m_RightJS.GetAbs(), m_RightJS.CENTER_X, m_RightJS.CENTER_Y - SCREEN_HEIGHT / 2 + 30, paint);
canvas.DrawText("Angle is " + m_RightJS.GetAngle() + " °", m_RightJS.CENTER_X, m_RightJS.CENTER_Y - SCREEN_HEIGHT / 2 + 60, paint);
canvas.DrawText("Direction is " + m_RightJS.GetDirection(), m_RightJS.CENTER_X, m_RightJS.CENTER_Y - SCREEN_HEIGHT / 2 + 90, paint);
}
/// <summary>
/// Sets new bounds for the joystick oval
/// </summary>
/// <param name="xPosition">X-Position of the touch</param>
/// <param name="yPosition">Y-Position of the touch</param>
private void UpdateOvals(float xPosition, float yPosition)
{
// Check if touch is in left or right of the screen
if (xPosition <= SCREEN_WIDTH / 2)
{
// Handle touch in the left half
m_LeftJS.SetPosition(xPosition, yPosition);
m_LeftJS.GetPower();
// Check if touch was inside the displacement radius
if ((m_LeftJS.GetAbs()) <= m_LeftJS.m_DisplacementRadius) // if((abs + m_LeftJS.m_StickRadius...
{
// Draw left joystick with original coordinates
SetBoundsForLeftStick(
(int)xPosition - (int)m_LeftJS.m_StickRadius,
(int)yPosition - (int)m_LeftJS.m_StickRadius,
(int)xPosition + (int)m_LeftJS.m_StickRadius,
(int)yPosition + (int)m_LeftJS.m_StickRadius);
}
else
{
// Draw left joystick with maximum coordinates
SetBoundsForLeftStick(
(int)(m_LeftJS.m_DisplacementRadius * Math.Cos(m_LeftJS.GetAngle() * Math.PI / 180)) - (int)m_LeftJS.m_StickRadius + (int)m_LeftJS.CENTER_X,
(int)(m_LeftJS.m_DisplacementRadius * Math.Sin(m_LeftJS.GetAngle() * Math.PI / 180)) - (int)m_LeftJS.m_StickRadius + (int)m_LeftJS.CENTER_Y,
(int)(m_LeftJS.m_DisplacementRadius * Math.Cos(m_LeftJS.GetAngle() * Math.PI / 180)) + (int)m_LeftJS.m_StickRadius + (int)m_LeftJS.CENTER_X,
(int)(m_LeftJS.m_DisplacementRadius * Math.Sin(m_LeftJS.GetAngle() * Math.PI / 180)) + (int)m_LeftJS.m_StickRadius + (int)m_LeftJS.CENTER_Y);
}
}
else
{
// Handle touch in the right half
m_RightJS.SetPosition(xPosition, yPosition);
// Check if touch was inside the displacement radius
if ((m_RightJS.GetAbs()) <= m_RightJS.m_DisplacementRadius)
{
// Draw right joystick with original coordinates
SetBoundsForRightStick(
(int)xPosition - (int)m_RightJS.m_StickRadius,
(int)yPosition - (int)m_RightJS.m_StickRadius,
(int)xPosition + (int)m_RightJS.m_StickRadius,
(int)yPosition + (int)m_RightJS.m_StickRadius);
}
else
{
// Draw left joystick with maximum coordinates
SetBoundsForRightStick(
(int)(m_RightJS.m_DisplacementRadius * Math.Cos(m_RightJS.GetAngle() * Math.PI / 180)) - (int)m_RightJS.m_StickRadius + (int)m_RightJS.CENTER_X,
(int)(m_RightJS.m_DisplacementRadius * Math.Sin(m_RightJS.GetAngle() * Math.PI / 180)) - (int)m_RightJS.m_StickRadius + (int)m_RightJS.CENTER_Y,
(int)(m_RightJS.m_DisplacementRadius * Math.Cos(m_RightJS.GetAngle() * Math.PI / 180)) + (int)m_RightJS.m_StickRadius + (int)m_RightJS.CENTER_X,
(int)(m_RightJS.m_DisplacementRadius * Math.Sin(m_RightJS.GetAngle() * Math.PI / 180)) + (int)m_RightJS.m_StickRadius + (int)m_RightJS.CENTER_Y);
}
}
}