static public void DrawLine_DotCircle(SpriteBatch spriteBatch, Vector2 vStart, Vector2 vEnd, Color color, int dotsize, int padding)
{
if (m_LineTexture == null)
{
CreateLineTexture(spriteBatch.GraphicsDevice);
}
float angle = MathExt.AngleToDegrees(vStart, vEnd);
float distance = Vector2.Distance(vStart, vEnd);
Vector2 vTemp = vStart - MathExt.DistanceTo_range_angle(Vector2.Zero, padding, angle);
for (int i = padding; i < distance; i += dotsize * 2)
{
vTemp += MathExt.DistanceTo_range_angle(Vector2.Zero, dotsize, angle) * 2;
DrawCircleAll(spriteBatch, vTemp, dotsize, color);
}
}
static public void DrawLine_DotRect(SpriteBatch spriteBatch, Vector2 vStart, Vector2 vEnd, Color color, int dotwitdh, int LineT, int padding)
{
if (m_LineTexture == null)
{
CreateLineTexture(spriteBatch.GraphicsDevice);
}
m_LIneColor = color;
float angle = MathExt.AngleToDegrees(vStart, vEnd);
float distance = Vector2.Distance(vStart, vEnd);
Vector2 vTemp = vStart - MathExt.DistanceTo_range_angle(Vector2.Zero, padding, angle);
for (int i = padding; i < distance; i += dotwitdh * 2)
{
vTemp += MathExt.DistanceTo_range_angle(Vector2.Zero, dotwitdh, angle) * 2;
distanceY = LineT;
Draw(spriteBatch, vTemp, MathExt.DistanceTo_range_angle(vTemp, dotwitdh, angle));
}
}
public static bool LineRectCollision(Vector2 vStart, Vector2 vEnd, Rectangle destRect)
{
float degree = MathExt.AngleToDegrees(vStart, vEnd);
float lineLength = MathExt.DistanceTwoPoint(vStart, vEnd);
float inputRotation = MathHelper.ToRadians(degree);
Vector2 vOrg = new Vector2(1, 0);
vOrg = Vector2.Transform(vOrg, Matrix.CreateRotationZ(inputRotation));
BoundingBox box = new BoundingBox(new Vector3(destRect.Left, destRect.Top, 0.0f),
new Vector3(destRect.Right, destRect.Bottom, 0.0f));
Ray ray = new Ray(new Vector3(vStart, 0.0f), new Vector3(vOrg, 0.0f));
float?result = box.Intersects(ray);
if (result != null && result <= lineLength)
{
return(true);
}
return(false);
}
