Functions under Dreams.Lib.*

• Intersections
  • Lib.IntersectABCylinderWithAABB
  • Lib.IntersectSphereWithAABB
  • Lib.IntersectABCylinderWithOBB
  • Lib.IntersectSphereWithOBB
• Vector Math
  • Lib.PlaneToNormal
  • Lib.InsideOutTest
  • Lib.RotationMatrixFromNormals
  • Lib.MinMaxVecs
  • Lib.HalfExtentsFromBox
  • Lib.IsSquare
  • Lib.MagnitudeToNormal
  • Lib.RectToMeshEx
• DreamPhys Traces
  • Lib.TraceRayPhys
  • Lib.IntersectCylPhys

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Intersections

Lib.IntersectABCylinderWithAABB

(cylOrg: Vector, cylRadius: float, cylHeight: float, boxmin: Vector, boxmax: Vector)

Calculates if an axis-bound cylinder is within an AABB container
Returns result: bool, normal: Vector, penetration-dist: Vector

• Origin starts the bottom of the cylinder, easier for player collisions

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Lib.IntersectSphereWithAABB

(sphereOrg: Vector, radius: float, boxmin: Vector, boxmax: Vector)

Calculates if a sphere is within an AABB container
Returns result: bool, normal: Vector, penetration-dist: Vector

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Lib.IntersectABCylinderWithOBB

(cylOrg: Vector, cylRadius: float, cylHeight: float, boxorg: Vector, boxangle: Angle, boxmin: Vector, boxmax: Vector, sizex: int, sizey: int, sizez: int)

Calculates if an axis-bound cylinder is within an OBB container sizex, sizey, sizez are the Half-Extents of the OBB container Returns result: bool, normal: Vector, penetration-dist: Vector

• Origin starts the bottom of the cylinder, easier for player collisions

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Lib.IntersectSphereWithOBB

(sphereOrg: Vector, radius: float, boxorg: Vector, boxangle: Angle, boxmin: Vector, boxmax: Vector)

Calculates if a sphere is within an OBB container
Returns result: bool, normal: Vector, penetration-dist: Vector

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Vector Math

Lib.PlaneToNormal

(p1: Vector, p2: Vector, p3: Vector)

Returns normal: Vector from three points defining a plane

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Lib.InsideOutTest

(p1: Vector, p2: Vector, p3: Vector, inside_point: Vector)

Returns result: bool whether inside_point is on the same side as p3 of the line defined by p1 and p2

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Lib.RotationMatrixFromNormals

(normal1: Vector, normal2: Vector, normal3: Vector)

Returns a rotational matrix: VMatrix from three orthogonal normals

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Lib.MinMaxVecs

(min, max, vector)

Returns a new min: Vector, max: Vector set with vector included

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Lib.HalfExtentsFromBox

(min, max)

Returns a table {1 = x, 2 = y, 3 = z} with the half extents of each axes

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Lib.IsSquare

(verts: table)

Returns result: bool if a table of verts on a plane form a square

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Lib.MagnitudeToNormal

(xdelta: float, ydelta: float, zdelta: float)

Returns the normal: Vector facing the direction of the axis of the highest magnitude
Used by Cylinder and Sphere intersections
delta variables use their absolute value internally

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Lib.RectToMeshEx

(l, w, h, origin: Vector, [ignore: table, reverse_faces: bool, utex_add, vtex_add])

Creates a rectangle for rendering meshes, origin starts in the left corner

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DreamPhys Traces

Lib.TraceRayPhys

(phys: DreamPhys, start: Vector, dir: Vector, dist)

Performs a trace on a DreamPhys object
Returns bool: hit, fraction, Vector: hitnormal, DreamSolid: hitsolid, DreamSide: hitside

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Lib.IntersectCylPhys

(phys: DreamPhys, origin: Vector, rad, height)

Performs a Cylinder intersection on a DreamPhys object
Returns Vector: hitnormal, Vector: dist, DreamSolid: hitsolid