Canvas (MultimediaLib 2019.1 API)

java.lang.Object
- nl.colorize.multimedialib.renderer.Canvas

```
public class Canvas
extends java.lang.Object
```
Used to control the size of the canvas displaying the application's graphics, independent from the size of the screen. This allows the application to control the zoom level, therefore controlling the user experience in situations where the same application is used across a variety of devices with different screen sizes. This class allows to translate between the two coordinate systems.
Although the canvas is given a preferred size and aspect ratio upon creation, it is not guaranteed that these will ever be used. This is especially true for mobile apps, where the application will usually fill the entire screen.

Constructor Summary

Constructors
Constructor Description

Canvas(int preferredWidth, int preferredHeight)

Canvas(int preferredWidth, int preferredHeight, float zoomLevel)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`getHeight()`
`int`	`getScreenHeight()`
`int`	`getScreenWidth()`
`int`	`getWidth()`
`float`	`getZoomLevel()`
`void`	`offset(int offsetX, int offsetY)`
`void`	`resize(int screenWidth, int screenHeight)`	Sets the screen dimensions to the specified values.
`int`	`toCanvasX(int screenX)`
`int`	`toCanvasY(int screenY)`
`int`	`toScreenX(float canvasX)`
`int`	`toScreenY(float canvasY)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Canvas

public Canvas(int preferredWidth,
              int preferredHeight,
              float zoomLevel)

Canvas

public Canvas(int preferredWidth,
              int preferredHeight)

Method Detail

resize
```
public void resize(int screenWidth,
                   int screenHeight)
```
Sets the screen dimensions to the specified values. This method should be called by the renderer when the application window is first created, and whenever the window is resized.

offset

public void offset(int offsetX,
                   int offsetY)

getWidth
```
public int getWidth()
```

getHeight
```
public int getHeight()
```

getScreenWidth
```
public int getScreenWidth()
```

getScreenHeight
```
public int getScreenHeight()
```

getZoomLevel
```
public float getZoomLevel()
```

toCanvasX
```
public int toCanvasX(int screenX)
```

toCanvasY
```
public int toCanvasY(int screenY)
```

toScreenX

public int toScreenX(float canvasX)

toScreenY

public int toScreenY(float canvasY)