Copyright	Will Thompson and Iñaki García Etxebarria
License	LGPL-2.1
Maintainer	Iñaki García Etxebarria
Safe Haskell	Safe-Inferred
Language	Haskell2010

GI.Graphene.Structs.Triangle

Contents

Exported types
Methods

Description

A triangle.

Since: 1.2

Synopsis

newtype Triangle = Triangle (ManagedPtr Triangle)
newZeroTriangle :: MonadIO m => m Triangle
triangleAlloc :: (HasCallStack, MonadIO m) => m Triangle
triangleContainsPoint :: (HasCallStack, MonadIO m) => Triangle -> Point3D -> m Bool
triangleEqual :: (HasCallStack, MonadIO m) => Triangle -> Triangle -> m Bool
triangleFree :: (HasCallStack, MonadIO m) => Triangle -> m ()
triangleGetArea :: (HasCallStack, MonadIO m) => Triangle -> m Float
triangleGetBarycoords :: (HasCallStack, MonadIO m) => Triangle -> Maybe Point3D -> m (Bool, Vec2)
triangleGetBoundingBox :: (HasCallStack, MonadIO m) => Triangle -> m Box
triangleGetMidpoint :: (HasCallStack, MonadIO m) => Triangle -> m Point3D
triangleGetNormal :: (HasCallStack, MonadIO m) => Triangle -> m Vec3
triangleGetPlane :: (HasCallStack, MonadIO m) => Triangle -> m Plane
triangleGetPoints :: (HasCallStack, MonadIO m) => Triangle -> m (Point3D, Point3D, Point3D)
triangleGetUv :: (HasCallStack, MonadIO m) => Triangle -> Maybe Point3D -> Vec2 -> Vec2 -> Vec2 -> m (Bool, Vec2)
triangleGetVertices :: (HasCallStack, MonadIO m) => Triangle -> m (Vec3, Vec3, Vec3)
triangleInitFromFloat :: (HasCallStack, MonadIO m) => Triangle -> [Float] -> [Float] -> [Float] -> m Triangle
triangleInitFromPoint3d :: (HasCallStack, MonadIO m) => Triangle -> Maybe Point3D -> Maybe Point3D -> Maybe Point3D -> m Triangle
triangleInitFromVec3 :: (HasCallStack, MonadIO m) => Triangle -> Maybe Vec3 -> Maybe Vec3 -> Maybe Vec3 -> m Triangle

Exported types

newtype Triangle Source #

Memory-managed wrapper type.

Constructors

Triangle (ManagedPtr Triangle)

Instances

Instances details

Eq Triangle Source #
Instance details Defined in GI.Graphene.Structs.Triangle Methods (==) :: Triangle -> Triangle -> Bool # (/=) :: Triangle -> Triangle -> Bool #
GBoxed Triangle Source #
Instance details Defined in GI.Graphene.Structs.Triangle
ManagedPtrNewtype Triangle Source #
Instance details Defined in GI.Graphene.Structs.Triangle Methods toManagedPtr :: Triangle -> ManagedPtr Triangle #
TypedObject Triangle Source #
Instance details Defined in GI.Graphene.Structs.Triangle Methods glibType :: IO GType #
HasParentTypes Triangle Source #
Instance details Defined in GI.Graphene.Structs.Triangle
tag ~ 'AttrSet => Constructible Triangle tag Source #
Instance details Defined in GI.Graphene.Structs.Triangle Methods new :: MonadIO m => (ManagedPtr Triangle -> Triangle) -> [AttrOp Triangle tag] -> m Triangle #
IsGValue (Maybe Triangle) Source #	Convert `Triangle` to and from `GValue`. See `toGValue` and `fromGValue`.
Instance details Defined in GI.Graphene.Structs.Triangle Methods gvalueGType_ :: IO GType # gvalueSet_ :: Ptr GValue -> Maybe Triangle -> IO () # gvalueGet_ :: Ptr GValue -> IO (Maybe Triangle) #
type ParentTypes Triangle Source #
Instance details Defined in GI.Graphene.Structs.Triangle type ParentTypes Triangle = '[] :: [Type]

newZeroTriangle :: MonadIO m => m Triangle Source #

Construct a Triangle struct initialized to zero.

Methods

Click to display all available methods, including inherited ones

Expand

Methods

containsPoint, equal, free, initFromFloat, initFromPoint3d, initFromVec3.

Getters

getArea, getBarycoords, getBoundingBox, getMidpoint, getNormal, getPlane, getPoints, getUv, getVertices.

Setters

None.

alloc

triangleAlloc Source #

Arguments

:: (HasCallStack, MonadIO m)
=> m Triangle	Returns: the newly allocated `Triangle` structure. Use `triangleFree` to free the resources allocated by this function

Allocates a new Triangle.

The contents of the returned structure are undefined.

Since: 1.2

containsPoint

triangleContainsPoint Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Triangle	`t`: a `Triangle`
-> Point3D	`p`: a `Point3D`
-> m Bool	Returns: `true` if the point is inside the triangle

Checks whether the given triangle t contains the point p.

Since: 1.2

equal

triangleEqual Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Triangle	`a`: a `Triangle`
-> Triangle	`b`: a `Triangle`
-> m Bool	Returns: `true` if the triangles are equal

Checks whether the two given Triangle are equal.

Since: 1.2

free

triangleFree Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Triangle	`t`: a `Triangle`
-> m ()

Frees the resources allocated by triangleAlloc.

Since: 1.2

getArea

triangleGetArea Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Triangle	`t`: a `Triangle`
-> m Float	Returns: the area of the triangle

Computes the area of the given Triangle.

Since: 1.2

getBarycoords

triangleGetBarycoords Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Triangle	`t`: a `Triangle`
-> Maybe Point3D	`p`: a `Point3D`
-> m (Bool, Vec2)	Returns: `true` if the barycentric coordinates are valid

Computes the barycentric coordinates of the given point p.

The point p must lie on the same plane as the triangle t; if the point is not coplanar, the result of this function is undefined.

If we place the origin in the coordinates of the triangle's A point, the barycentric coordinates are u, which is on the AC vector; and v which is on the AB vector:

The returned Vec2 contains the following values, in order:

```
res.x = u
```
```
res.y = v
```

Since: 1.2

getBoundingBox

triangleGetBoundingBox Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Triangle	`t`: a `Triangle`
-> m Box

Computes the bounding box of the given Triangle.

Since: 1.2

getMidpoint

triangleGetMidpoint Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Triangle	`t`: a `Triangle`
-> m Point3D

Computes the coordinates of the midpoint of the given Triangle.

The midpoint G is the centroid of the triangle, i.e. the intersection of its medians.

Since: 1.2

getNormal

triangleGetNormal Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Triangle	`t`: a `Triangle`
-> m Vec3

Computes the normal vector of the given Triangle.

Since: 1.2

getPlane

triangleGetPlane Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Triangle	`t`: a `Triangle`
-> m Plane

Computes the plane based on the vertices of the given Triangle.

Since: 1.2

getPoints

triangleGetPoints Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Triangle	`t`: a `Triangle`
-> m (Point3D, Point3D, Point3D)

Retrieves the three vertices of the given Triangle and returns their coordinates as Point3D.

Since: 1.2

getUv

triangleGetUv Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Triangle	`t`: a `Triangle`
-> Maybe Point3D	`p`: a `Point3D`
-> Vec2	`uvA`: the UV coordinates of the first point
-> Vec2	`uvB`: the UV coordinates of the second point
-> Vec2	`uvC`: the UV coordinates of the third point
-> m (Bool, Vec2)	Returns: `true` if the coordinates are valid

Computes the UV coordinates of the given point p.

The point p must lie on the same plane as the triangle t; if the point is not coplanar, the result of this function is undefined. If p is Nothing, the point will be set in (0, 0, 0).

The UV coordinates will be placed in the res vector:

```
res.x = u
```
```
res.y = v
```

getVertices

triangleGetVertices Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Triangle	`t`: a `Triangle`
-> m (Vec3, Vec3, Vec3)

Retrieves the three vertices of the given Triangle.

Since: 1.2

initFromFloat

triangleInitFromFloat Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Triangle	`t`: the `Triangle` to initialize
-> [Float]	`a`: an array of 3 floating point values
-> [Float]	`b`: an array of 3 floating point values
-> [Float]	`c`: an array of 3 floating point values
-> m Triangle	Returns: the initialized `Triangle`

Initializes a Triangle using the three given arrays of floating point values, each representing the coordinates of a point in 3D space.

Since: 1.10

initFromPoint3d

triangleInitFromPoint3d Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Triangle	`t`: the `Triangle` to initialize
-> Maybe Point3D	`a`: a `Point3D`
-> Maybe Point3D	`b`: a `Point3D`
-> Maybe Point3D	`c`: a `Point3D`
-> m Triangle	Returns: the initialized `Triangle`

Initializes a Triangle using the three given 3D points.

Since: 1.2

initFromVec3

triangleInitFromVec3 Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Triangle	`t`: the `Triangle` to initialize
-> Maybe Vec3	`a`: a `Vec3`
-> Maybe Vec3	`b`: a `Vec3`
-> Maybe Vec3	`c`: a `Vec3`
-> m Triangle	Returns: the initialized `Triangle`

Initializes a Triangle using the three given vectors.

Since: 1.2