Interface OBJ_QuadraticBezier

Curved translation path options, that defineds the control point of a quadratic bezier curve.

Use controlPoint to define the control point directly. This will override all other properties.

Otherwise direction, magnitude and offset can be used to calculate the control point based on the start and end points of the curve.

The control point is calculated by:

• Define a line from start to target - it will have length d
• Define a point P on the line
• Define a control line from point P with length d and some angle delta from the original line.

The properties then customize this calculation:

• magnitude will scale the distance d
• offset will define where on the line point P is where 0.5 is the midpoint and 0.1 is 10% along the line from the start location
• direction will define which side of the line the control line should be drawn
• angle defines the angle delta between the line and the control line - by default this a right angle (Math.PI / 2)

The directions 'up', 'down', 'left', 'right' all reference the side of the line. The 'positive' direction is the side of the line that the line would move toward when rotated in the positive direction around the start point. The 'negative' side of the line is then the opposite side.

These directions only work when the angle is between 0 and Math.PI.