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M_PLANE(3) Library Functions Manual M_PLANE(3) NAME M_Line -- Agar-Math plane structure SYNOPSIS #include <agar/core.h> #include <agar/gui.h> #include <agar/math/m.h> DESCRIPTION The M_Plane structure describes a plane in R^3 (Ax+By+Cz+D=0): typedef struct m_plane { M_Vector3 n; /* Normal vector */ M_Real d; /* Distance to origin */ } M_Plane; The plane satisfies the equation A(n.x) + B(n.y) + C(n.z) = d. INITIALIZATION M_Plane M_PlaneFromPts(M_Vector3 p1, M_Vector p2, M_Vector p3) M_Plane M_PlaneFromParallel(M_Plane P, M_Real d) M_Plane M_PlaneRead(AG_DataSource *ds) void M_PlaneWrite(AG_DataSource *ds, M_Plane *P) M_Plane M_PLANE_INITIALIZER(M_Real a, M_Real b, M_Real c, M_Real d) The M_PlaneFromPts() function returns a plane from three (non-colinear) points p1, p2 and p3. M_PlaneFromParallel() returns the parallel plane at distance d from the specified plane P. The M_PlaneRead() and M_PlaneWrite() functions read or write a plane structure from/to an AG_DataSource(3). The macro M_PLANE_INITIALIZER() expands to a static initializer for a M_Plane from the coefficients of the plane equation a, b, c, d. TESTS M_Real M_PlaneVectorAngle(M_Plane P, M_Vector3 v) The M_PlaneVectorAngle() function computes the angle between the plane and specified vector, in radians. SEE ALSO AG_DataSource(3), AG_Intro(3), M_Circle(3), M_Geometry(3), M_Plane(3), M_Polygon(3), M_Rectangle(3), M_Sphere(3), M_Triangle(3), M_Vector(3) HISTORY The M_Line structure first appeared in Agar 1.3.4. Agar 1.7 December 21, 2022 M_PLANE(3)
NAME | SYNOPSIS | DESCRIPTION | INITIALIZATION | TESTS | SEE ALSO | HISTORY
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