Category:Physics Engine/Bounding Boxes
A bounding box is a structure the contains the left, bottom, right, and top edges of a box.
Its type is TI.cpBB.
BB
bb = physics.BB(l, b, r, t)
| Parameter | Type | Description |
|---|---|---|
| l | in number | left |
| b | in number | bottom |
| r | in number | right |
| t | in number | top |
| bb | out physics.BB | A bounding box with boundaries left, bottom, right, and top |
Returns a new bounding box with the given initial edges.
Introduced in platform.apiLevel = '2.0'
b
bottom = physics.BB:b()
| Parameter | Type | Description |
|---|---|---|
| self | in physics.BB | The input bounding box |
| bottom | out number | The bottom edge of the bounding box |
Returns the bottom edge of the bounding box.
Introduced in platform.apiLevel = '2.0'
clampVect
cvec = physics.BB:clampVect(vec)
| Parameter | Type | Description |
|---|---|---|
| self | in physics.BB | The input bounding box |
| vec | in physics.Vect | A vector |
| cvec | out physics.Vect | A vector clamped to the bounding box |
Returns a copy of vec clamped to the bounding box.
Introduced in platform.apiLevel = '2.0'
containsBB
bool = physics.BB:containsBB(other)
| Parameter | Type | Description |
|---|---|---|
| self | in physics.BB | The input bounding box |
| other | in physics.BB | The other bounding box |
| bool | out boolean | True if self completely contains the other bounding box |
Determines if a bouding box contains another bounding box.
Introduced in platform.apiLevel = '2.0'
containsVect
bool = physics.BB:containsVect(vec)
| Parameter | Type | Description |
|---|---|---|
| self | in physics.BB | The input bounding box |
| vec | in physics.Vect | A vector |
| bool | out boolean | True if self contains vector vec |
Determines if a bounding box contains a vector.
Introduced in platform.apiLevel = '2.0'
expand
bb = phyics.BB:expand(vec)
| Parameter | Type | Description |
|---|---|---|
| self | in physics.BB | The input bounding box |
| vec | in physics.Vect | A vector |
| bb | out physics.BB | The bounding box self expanded to include vector vec |
Returns the bounding box that contains both self and vec.
Introduced in platform.apiLevel = '2.0'
intersects
bool = physics.BB:intersects(other)
| Parameter | Type | Description |
|---|---|---|
| self | in physics.BB | The input bounding box |
| other | in physics.BB | The other bounding box |
| bool | out boolean | True if self intersects the other bounding box |
Determines if two bounding boxes intersect.
Introduced in platform.apiLevel = '2.0'
l
left = physics.BB:l()
| Parameter | Type | Description |
|---|---|---|
| self | in physics.BB | The input bounding box |
| left | out number | The left edge of the bounding box |
Returns the left edge of the bounding box.
Introduced in platform.apiLevel = '2.0'
merge
bb = physics.BB:merge(other)
| Parameter | Type | Description |
|---|---|---|
| self | in physics.BB | The input bounding box |
| other | in physics.BB | The other bounding box |
| bb | out physics.BB | The bounding box that contains both self and the other bounding box |
Returns the bounding box that contains both self and the other bounding box.
Introduced in platform.apiLevel = '2.0'
setb
self = physics.BB:setb(bottom)
| Parameter | Type | Description |
|---|---|---|
| self | in physics.BB | The input bounding box |
| bottom | in number | The new value for the bottom edge of the bounding box |
| self | out physics.BB | The input bounding box is returned as the output |
Sets the bottom edge of the bounding box to a new value. Returns self.
Introduced in platform.apiLevel = '2.0'
r
right = physics.BB:r()
| Parameter | Type | Description |
|---|---|---|
| self | in physics.BB | The input bounding box |
| right | out number | The right edge of the bounding box |
Returns the right edge of the bounding box.
Introduced in platform.apiLevel = '2.0'
setl
self = physics.BB:setl(left)
| Parameter | Type | Description |
|---|---|---|
| self | in physics.BB | The input bounding box |
| left | in number | The new value for the left edge of the bounding box |
| self | out physics.BB | The input bounding box is returned as the output |
Sets the left edge of the bounding box to a new value. Returns self.
Introduced in platform.apiLevel = '2.0'
setr
self = physics.BB:setr(right)
| Parameter | Type | Description |
|---|---|---|
| self | in physics.BB | The input bounding box |
| right | in number | The new value for the right edge of the bounding box |
| self | out physics.BB | The input bounding box is returned as the output |
Sets the right edge of the bounding box to a new value. Returns self.
Introduced in platform.apiLevel = '2.0'
sett
self = physics.BB:sett(top)
| Parameter | Type | Description |
|---|---|---|
| self | in physics.BB | The input bounding box |
| top | in number | The new value for the top edge of the bounding box |
| self | out physics.BB | The input bounding box is returned as the output |
Sets the top edge of the bounding box to a new value. Returns self.
Introduced in platform.apiLevel = '2.0'
t
top = physics.BB:t()
| Parameter | Type | Description |
|---|---|---|
| self | in physics.BB | The input bounding box |
| top | out number | The top edge of the bounding box |
Returns the top edge of the bounding box.
Introduced in platform.apiLevel = '2.0'
wrapVect
wvec = physics.BB:wrapVect(vec)
| Parameter | Type | Description |
|---|---|---|
| self | in physics.BB | The input bounding box |
| vec | in physics.Vect | A vector |
| wvec | out physics.Vect | A vector wrapped to the bounding box |
Returns a copy of vec wrapped to the bounding box.
Introduced in platform.apiLevel = '2.0'
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