LPlaned Class ReferenceAn abstract mathematical description of a plane. More...
Inheritance diagram for LPlaned:
Detailed DescriptionAn abstract mathematical description of a plane. A plane is defined by the equation Ax + By + Cz + D = 0. Constructor & Destructor Documentation
Member Function Documentation
Returns the straight-line shortest distance from the point to the plane. The returned value is positive if the point is in front of the plane (on the side with the normal), or negative in the point is behind the plane (on the opposite side from the normal). It's zero if the point is exactly in the plane. Definition at line 261 of file plane.h. Referenced by EggPolygon::is_planar().
Returns an arbitrary point in the plane. This can be used along with the normal returned by get_normal() to reconstruct the plane.
Returns true if the plane intersects the infinite line passing through points p1 and p2, false if the line is parallel. The points p1 and p2 are used only to define the Euclidean line; they have no other bearing on the intersection test. If true, sets intersection_point to the point of intersection.
This flavor of intersects_line() returns a bit more information about the nature of the intersecting point. The line is defined via the parametric equation from + t * delta for all real values of t. If there is no intersection with the plane, the function returns false and leaves t undefined. If there is an intersection with the plane, the function returns true and sets t to the parametric value that defines the point of intersection. That is, t == 0.0f implies that the intersection occurred exactly at point from, and t == 1.0f implies at point from + delta, with other values of t accordingly.
Determines whether and where the indicated parabola intersects with the plane. If there is no intersection with the plane, the function returns false and leaves t1 and t2 undefined. If there is an intersection with the plane, the function returns true and sets t1 and t2 to the parametric value that defines the two points of intersection. If the parabola is exactly tangent to the plane, then t1 == t2. Returns true if the two planes intersect, false if they do not. If they do intersect, then from and delta are filled in with the parametric representation of the line of intersection: that is, from is a point on that line, and delta is a vector showing the direction of the line.
Returns the same plane facing the opposite direction. Reimplemented from LVecBase4d.
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