Class: Triangle
shapes/triangle.Triangle
Represents a triangle in 2D space with a width and height.
Hierarchy
↳
Triangle
Constructors
constructor
• new Triangle(width, height, position?, rotation?)
Creates a new Triangle instance with dimensions, position and rotation.
Parameters
| Name | Type | Description |
|---|---|---|
width | number | The width of the triangle (x size) |
height | number | The height of the triangle (y size) |
position? | vec2 | The triangle's position in world space, default is [0, 0] |
rotation? | number | The triangle's rotation, default is 0. |
Overrides
Defined in
src/shapes/triangle.ts:33
Properties
height
• Private height: number
Defined in
src/shapes/triangle.ts:22
listeners
• Protected listeners: Object = {}
Index signature
▪ [index: string]: Listener[]
Inherited from
Defined in
src/object2d.ts:32
opacity
• opacity: number = 1
Opacity of the shape.
This is an opacity of the whole shape which is applied to the shape's entire texture equally.
Range is 0 (completely transparent) to 1 (completely opaque)
Inherited from
Defined in
src/shapes/shape.ts:28
texture
• texture: Texture = defaultTexture
Inherited from
Defined in
src/shapes/shape.ts:19
width
• Private width: number
Defined in
src/shapes/triangle.ts:23
Methods
addEventListener
▸ addEventListener(event, listener): boolean
Executes a function when an event is fired.
Parameters
| Name | Type | Description |
|---|---|---|
event | string | The event to listen for |
listener | Listener | The function to execute when the event fired |
Returns
boolean
Wether or not the listener was added
Inherited from
Defined in
src/object2d.ts:209
fireEvent
▸ fireEvent(event, ...e): void
Executes all listeners attached to a given event.
Parameters
| Name | Type | Description |
|---|---|---|
event | string | The event to fire |
...e | any | The data to pass to each event listener |
Returns
void
Inherited from
Defined in
src/object2d.ts:185
getBaseVertices
▸ getBaseVertices(): vec2[]
Calculates the base vertices of the triangle.
These are the vertices for a triangle scaled to the width and height of the Triangle instance.
Returns
vec2[]
The triangles base vertices
Overrides
Defined in
src/shapes/triangle.ts:87
getEventListeners
▸ getEventListeners(event): Listener[]
Gets the listeners attached to an event.
Parameters
| Name | Type |
|---|---|
event | string |
Returns
Listener[]
An array of listeners attached to the given event
Inherited from
Defined in
src/object2d.ts:198
getEvents
▸ getEvents(): string[]
Gets the events that can be listened to on the object.
Returns
string[]
The events the object supports
Inherited from
Defined in
src/object2d.ts:175
getHeight
▸ getHeight(): number
Gets the triangle's height in world space units.
Returns
number
The triangle's height in world space
Defined in
src/shapes/triangle.ts:164
getIndices
▸ getIndices(offset?): Uint16Array
Gets the triangle's vertex indices for drawing using element arrays.
Parameters
| Name | Type | Default value | Description |
|---|---|---|---|
offset | number | 0 | An offset to apply to each index |
Returns
Uint16Array
The triangle's vertex indices with the given offset added to each index
Overrides
Defined in
src/shapes/triangle.ts:111
getPoints
▸ getPoints(): vec2[]
Calculates the bounding points of the Shape instance.
NOTE: The shape's vertices are recalculated every time this function is called.
Returns
vec2[]
The bounding points of the box
Inherited from
Defined in
src/shapes/shape.ts:136
getPosition
▸ getPosition(): vec2
Gets the object's position.
Returns
vec2
The object's position as a vec2
Inherited from
Defined in
src/object2d.ts:82
getRotation
▸ getRotation(): number
Gets the object's rotation as a number in radians relative to y+.
Returns
number
The object's rotation
Inherited from
Defined in
src/object2d.ts:139
getUVCoords
▸ getUVCoords(): Float32Array
Calculates the triangles's UV coords to be used for texture rendering.
Returns
Float32Array
the triangle's UV coords
Overrides
Defined in
src/shapes/triangle.ts:120
getVertices
▸ getVertices(): number[]
Calculates the shape's vertices in local space.
Returns
number[]
The shape's vertices
Inherited from
Defined in
src/shapes/shape.ts:57
getVerticesClipSpace
▸ getVerticesClipSpace(origin, scale, rotation?, camera?): number[]
Calculates the shape's vertices relative to the provided origin in world space.
Parameters
| Name | Type | Description |
|---|---|---|
origin | vec2 | The origin to calculate the vertices relative to, should be a world position |
scale | vec2 | The vector to scale the world space vertices by to obtain clip space values |
rotation? | number | An optional rotation to apply to the vertices |
camera? | Camera | An optional camera to get vertices relative to |
Returns
number[]
The shape's vertices relative to the provided origin in clip space
Inherited from
Defined in
src/shapes/shape.ts:87
getVerticesWorld
▸ getVerticesWorld(origin, rotation?, returnVecs?): number[] | vec2[]
Calculates the triangle's vertices relative to the provided origin in world space.
Parameters
| Name | Type | Default value | Description |
|---|---|---|---|
origin | vec2 | undefined | The origin to calculate the vertices relative to, should be a world position |
rotation? | number | undefined | An optional world space rotation to apply to the vertices |
returnVecs | boolean | false | Wether or not to return the vertices as vec2s or raw numbers |
Returns
number[] | vec2[]
The triangle's vertices relative to the provided origin in world space
Overrides
Defined in
src/shapes/triangle.ts:50
getWidth
▸ getWidth(): number
Gets the triangle's width in world space units.
Returns
number
The triangle's width in world space
Defined in
src/shapes/triangle.ts:142
moveRight
▸ moveRight(dist): void
Moves the object's position right (x+) relative to it's rotation.
Parameters
| Name | Type | Description |
|---|---|---|
dist | number | The distance to move right, can be + or - |
Returns
void
Inherited from
Defined in
src/object2d.ts:100
moveUp
▸ moveUp(dist): void
Moves the object's position up (y+) relative to it's rotation.
Parameters
| Name | Type | Description |
|---|---|---|
dist | number | The distance to move up, can be + or - |
Returns
void
Inherited from
Defined in
src/object2d.ts:114
removeEventListener
▸ removeEventListener(event, listener): boolean
Removes a listener from an event.
Parameters
| Name | Type | Description |
|---|---|---|
event | string | The event the listener is attached to |
listener | Listener | The listener to remove |
Returns
boolean
Wether or not the listener was removed
Inherited from
Defined in
src/object2d.ts:223
render
▸ render(position?, rotation?, zIndex?): void
Renders the shape using the Renderer.
Parameters
| Name | Type | Description |
|---|---|---|
position? | vec2 | The x and y position to render the shape at |
rotation? | number | The rotation to apply to the rendered shape |
zIndex? | number | The z position of the rendered shape |
Returns
void
Inherited from
Defined in
src/shapes/shape.ts:41
rotate
▸ rotate(angle): void
Increments the object's rotation by an angle in radians.
Parameters
| Name | Type | Description |
|---|---|---|
angle | number | The angle to rotate by in radians |
Returns
void
Inherited from
Defined in
src/object2d.ts:148
setHeight
▸ setHeight(height): void
Sets the triangle's height.
throws When the the provided height is < 0
Parameters
| Name | Type | Description |
|---|---|---|
height | number | The triangle's new height |
Returns
void
Defined in
src/shapes/triangle.ts:153
setPosition
▸ setPosition(pos): void
Sets the object's position.
Parameters
| Name | Type | Description |
|---|---|---|
pos | vec2 | The object's new position |
Returns
void
Inherited from
Defined in
src/object2d.ts:43
setPositionX
▸ setPositionX(x): void
Sets the x component of the object's position.
Parameters
| Name | Type | Description |
|---|---|---|
x | number | The object's new x coordinate |
Returns
void
Inherited from
Defined in
src/object2d.ts:56
setPositionY
▸ setPositionY(y): void
Sets the y component of the object's position.
Parameters
| Name | Type | Description |
|---|---|---|
y | number | The object's new y coordinate |
Returns
void
Inherited from
Defined in
src/object2d.ts:69
setRotation
▸ setRotation(angle): void
Sets the object's rotation.
Parameters
| Name | Type | Description |
|---|---|---|
angle | number | The object's new rotation |
Returns
void
Inherited from
Defined in
src/object2d.ts:128
setWidth
▸ setWidth(width): void
Sets the triangle's width.
throws When the the provided width is < 0
Parameters
| Name | Type | Description |
|---|---|---|
width | number | The triangle's new width |
Returns
void
Defined in
src/shapes/triangle.ts:131
setupEvents
▸ Protected setupEvents(): void
Sets all the events that can be used in listeners.
Listeners can be added for an event using:
this.listeners.eventName = [];
example Setup listeners for "position" and "rotate" events.
this.listeners.position = [];
this.listeners.rotate = [];
Returns
void
Inherited from
Defined in
src/object2d.ts:165
translate
▸ translate(v): void
Translates the object by the provided vector.
Parameters
| Name | Type | Description |
|---|---|---|
v | vec2 | The vector to translate by |
Returns
void
Inherited from
Defined in
src/object2d.ts:91