Struct graphene::Triangle

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pub struct Triangle { /* private fields */ }
Expand description

A triangle.

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impl Triangle

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pub fn as_ptr(&self) -> *mut graphene_triangle_t

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pub unsafe fn from_glib_ptr_borrow<'a>( ptr: *const graphene_triangle_t ) -> &'a Self

Borrows the underlying C value.

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pub unsafe fn from_glib_ptr_borrow_mut<'a>( ptr: *mut graphene_triangle_t ) -> &'a mut Self

Borrows the underlying C value mutably.

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impl Triangle

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pub fn contains_point(&self, p: &Point3D) -> bool

Checks whether the given triangle self contains the point p.

p

a Point3D

Returns

true if the point is inside the triangle

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pub fn area(&self) -> f32

Computes the area of the given Triangle.

Returns

the area of the triangle

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pub fn barycoords(&self, p: Option<&Point3D>) -> Option<Vec2>

Computes the barycentric coordinates of the given point p.

The point p must lie on the same plane as the triangle self; 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
p

a Point3D

Returns

true if the barycentric coordinates are valid

res

return location for the vector with the barycentric coordinates

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pub fn bounding_box(&self) -> Box

Computes the bounding box of the given Triangle.

Returns
res

return location for the box

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pub fn midpoint(&self) -> 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.

Returns
res

return location for the coordinates of the midpoint

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pub fn normal(&self) -> Vec3

Computes the normal vector of the given Triangle.

Returns
res

return location for the normal vector

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pub fn plane(&self) -> Plane

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

Returns
res

return location for the plane

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pub fn points(&self) -> (Point3D, Point3D, Point3D)

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

Returns
a

return location for the coordinates of the first vertex

b

return location for the coordinates of the second vertex

c

return location for the coordinates of the third vertex

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pub fn uv( &self, p: Option<&Point3D>, uv_a: &Vec2, uv_b: &Vec2, uv_c: &Vec2 ) -> Option<Vec2>

Computes the UV coordinates of the given point p.

The point p must lie on the same plane as the triangle self; if the point is not coplanar, the result of this function is undefined. If p is None, 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

See also: barycoords()

p

a Point3D

uv_a

the UV coordinates of the first point

uv_b

the UV coordinates of the second point

uv_c

the UV coordinates of the third point

Returns

true if the coordinates are valid

res

a vector containing the UV coordinates of the given point p

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pub fn vertices(&self) -> (Vec3, Vec3, Vec3)

Retrieves the three vertices of the given Triangle.

Returns
a

return location for the first vertex

b

return location for the second vertex

c

return location for the third vertex

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impl Triangle

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pub fn from_float(a: [f32; 3], b: [f32; 3], c: [f32; 3]) -> Self

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

a

an array of 3 floating point values

b

an array of 3 floating point values

c

an array of 3 floating point values

Returns

the initialized Triangle

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pub fn from_point3d( a: Option<&Point3D>, b: Option<&Point3D>, c: Option<&Point3D> ) -> Self

Initializes a Triangle using the three given 3D points.

a

a Point3D

b

a Point3D

c

a Point3D

Returns

the initialized Triangle

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pub fn from_vec3(a: Option<&Vec3>, b: Option<&Vec3>, c: Option<&Vec3>) -> Self

Initializes a Triangle using the three given vectors.

a

a Vec3

b

a Vec3

c

a Vec3

Returns

the initialized Triangle

Trait Implementations§

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impl Clone for Triangle

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fn clone(&self) -> Self

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Triangle

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl HasParamSpec for Triangle

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type ParamSpec = ParamSpecBoxed

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type SetValue = Triangle

Preferred value to be used as setter for the associated ParamSpec.
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type BuilderFn = fn(_: &str) -> ParamSpecBoxedBuilder<'_, Triangle>

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fn param_spec_builder() -> Self::BuilderFn

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impl PartialEq for Triangle

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fn eq(&self, other: &Self) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl StaticType for Triangle

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fn static_type() -> Type

Returns the type identifier of Self.
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impl Copy for Triangle

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impl Eq for Triangle

Auto Trait Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GList> for T

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GPtrArray> for T

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GSList> for T

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GList> for T

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GPtrArray> for T

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impl<T> FromGlibContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GSList> for T

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GList> for T

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GPtrArray> for T

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *const GSList> for T

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GList> for T

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GPtrArray> for T

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impl<T> FromGlibPtrArrayContainerAsVec<<T as GlibPtrDefault>::GlibType, *mut GSList> for T

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoClosureReturnValue for T
where T: Into<Value>,

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impl<T> Property for T
where T: HasParamSpec,

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type Value = T

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impl<T> PropertyGet for T
where T: HasParamSpec,

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type Value = T

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fn get<R, F>(&self, f: F) -> R
where F: Fn(&<T as PropertyGet>::Value) -> R,

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impl<T> StaticTypeExt for T
where T: StaticType,

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fn ensure_type()

Ensures that the type has been registered with the type system.
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToSendValue for T
where T: Send + ToValue + ?Sized,

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fn to_send_value(&self) -> SendValue

Returns a SendValue clone of self.
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T> TryFromClosureReturnValue for T
where T: for<'a> FromValue<'a> + StaticType + 'static,

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impl<T, U> TryInto<U> for T
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Performs the conversion.
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