Package org.sunflow.core
Class IntersectionState
java.lang.Object
org.sunflow.core.IntersectionState
This class is used to store ray/object intersections. It also provides
additional data to assist
AccelerationStructure
objects with
traversal.-
Nested Class Summary
Nested ClassesModifier and TypeClassDescriptionstatic final class
Traversal stack node, helps with tree-basedAccelerationStructure
traversal. -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionfinal IntersectionState.StackNode[]
getStack()
Get stack object for tree basedAccelerationStructure
s.float
getTime()
Returns the time at which the intersection should be calculated.final boolean
hit()
Checks to see if a hit has been recorded.final void
setIntersection
(int id) Record an intersection with the specified primitive id.final void
setIntersection
(int id, float u, float v) Record an intersection with the specified primitive id.final void
setIntersection
(int id, float u, float v, float w) Record an intersection with the specified primitive id.
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Constructor Details
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IntersectionState
public IntersectionState()Initializes all traversal stacks.
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Method Details
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getTime
public float getTime()Returns the time at which the intersection should be calculated. This will be constant for a given ray-tree. This value is guarenteed to be between the camera's shutter open and shutter close time.- Returns:
- time value
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getStack
Get stack object for tree basedAccelerationStructure
s.- Returns:
- array of stack nodes
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hit
public final boolean hit()Checks to see if a hit has been recorded.- Returns:
true
if a hit has been recorded,false
otherwise
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setIntersection
public final void setIntersection(int id) Record an intersection with the specified primitive id. The parent object is assumed to be the current instance. The u and v parameters are used to pinpoint the location on the surface if needed.- Parameters:
id
- primitive id of the intersected object
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setIntersection
public final void setIntersection(int id, float u, float v) Record an intersection with the specified primitive id. The parent object is assumed to be the current instance. The u and v parameters are used to pinpoint the location on the surface if needed.- Parameters:
id
- primitive id of the intersected objectu
- u surface paramater of the intersection pointv
- v surface parameter of the intersection point
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setIntersection
public final void setIntersection(int id, float u, float v, float w) Record an intersection with the specified primitive id. The parent object is assumed to be the current instance. The u and v parameters are used to pinpoint the location on the surface if needed.- Parameters:
id
- primitive id of the intersected objectu
- u surface paramater of the intersection pointv
- v surface parameter of the intersection point
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