glok-core/uk.co.nickthecoder.glok.backend/DummyBackend

DummyBackend

A Backend used for unit-testing, which renders nothing. By having a backend which doesn't actually render anything, unit tests which are not testing the actual display output do not need to create a window, or use OpenGL.

Constructors

DummyBackend

constructor()

Properties

latestWindow

lateinit var latestWindow: DummyWindow

Functions

batch

open override fun batch(texture: Texture, tint: Color?, modelMatrix: Matrix?, block: TextureBatch.() -> Unit)

OpenGL is moe efficient when operations can be batched. So rather than call drawTexture multiple times (with the same texture, tint, and modelMatrix), batch them and call TextureBatch.draw instead.

beginClipping

open override fun beginClipping(left: Float, top: Float, width: Float, height: Float): Boolean

Clip (scissor). The values are LogicalPixels measured from the TOP left of the window. The clipped region is the intersection of the currently clipped region and the newly requested region.

clear

open override fun clear(color: Color)

Draws a flot color over the entire viewport. Used at the start of each redraw.

createTexture

open override fun createTexture(name: String, width: Int, height: Int, pixels: IntArray): Texture

createWindow

open override fun createWindow(width: Int, height: Int): Window

drawFrame

open override fun drawFrame(window: Window, block: () -> Unit)

drawTexture

open override fun drawTexture(texture: Texture, srcX: Float, srcY: Float, width: Float, height: Float, destX: Float, destY: Float, destWidth: Float, destHeight: Float, modelMatrix: Matrix?)

Draws the part of the texture defined by the rectangle srcX, srcY, height to destX, destY (which is where the top-left of the source corresponds to).

drawTintedTexture

open override fun drawTintedTexture(texture: Texture, tint: Color, srcX: Float, srcY: Float, width: Float, height: Float, destX: Float, destY: Float, destWidth: Float, destHeight: Float, modelMatrix: Matrix?)

drawView

open override fun drawView(width: Float, height: Float, scale: Float, block: () -> Unit)

endClipping

open override fun endClipping()

fillQuarterCircle

open override fun fillQuarterCircle(x1: Float, y1: Float, x2: Float, y2: Float, color: Color, radius: Float)

fillRect

open override fun fillRect(rect: GlokRect, color: Color)

open override fun fillRect(left: Float, top: Float, right: Float, bottom: Float, color: Color)

gradient

open override fun gradient(triangles: FloatArray, colors: Array<Color>)

A gradient fill. Each vertex of each triangle has a color.

hsvGradient

open override fun hsvGradient(triangles: FloatArray, colors: Array<FloatArray>)

monitorSize

open override fun monitorSize(): Pair<Int, Int>

processEvents

open override fun processEvents(timeoutSeconds: Double)

resources

open override fun resources(path: String): Resources

setCursor

open override fun setCursor(window: Window, cursor: StandardCursor)

strokeInsideRect

open override fun strokeInsideRect(rect: GlokRect, thickness: Float, color: Color)

open override fun strokeInsideRect(left: Float, top: Float, right: Float, bottom: Float, thickness: Float, color: Color)

strokeQuarterCircle

open override fun strokeQuarterCircle(x1: Float, y1: Float, x2: Float, y2: Float, color: Color, radius: Float, innerRadius: Float)

transform

open override fun transform(transformation: Matrix, block: () -> Unit)

Transforms the coordinates of all drawing calls within the block of code. Used by the Rotation node and ProxyNode.