Difference between revisions of "Legacy:Image/zoomBlit"
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Draw the image onto the screen with zooming. | Draw the image onto the screen with zooming. | ||
| − | =Usage= | + | ==Usage== |
| − | + | {{Usage|object=image|func=zoomBlit|params=x, y, factor}} | |
| − | * '''image''' Sphere [[Image]] object. The image to draw on screen. | + | * '''image''' Sphere [[API:Image|Image]] object. The image to draw on screen. |
* '''x''' number. The x coordinate of the top-left corner of the drawn image. | * '''x''' number. The x coordinate of the top-left corner of the drawn image. | ||
* '''y''' number. The y coordinate of the top-left corner of the drawn image. | * '''y''' number. The y coordinate of the top-left corner of the drawn image. | ||
* '''factor''' number, floating-point. The amount of zooming applied. factor == 1 causes no zoom, 0 < factor < 1 causes the image to shrink, factor > 1 causes the image to enlarge. | * '''factor''' number, floating-point. The amount of zooming applied. factor == 1 causes no zoom, 0 < factor < 1 causes the image to shrink, factor > 1 causes the image to enlarge. | ||
| − | + | ==Examples== | |
| − | =Examples= | ||
This simple game will take an image and zoom it so that it is stretched to fit the screen. | This simple game will take an image and zoom it so that it is stretched to fit the screen. | ||
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</syntaxhighlight> | </syntaxhighlight> | ||
| + | ==Notes== | ||
| − | + | * [[API:Image/transformBlit|Image.transformBlit]]() can also be used to achieve zooming, by picking the corner points manually. | |
| − | + | ==See also== | |
| + | * Sphere [[API:Image|Image]] object | ||
| + | * [[API:Image/blit|Image.blit]]() | ||
| + | * [[API:Image/transformBlit|Image.transformBlit]]() | ||
| + | * [[API:Image/transformBlitMask|Image.transformBlitMask]]() | ||
| − | + | * [[API:FlipScreen|FlipScreen]]() | |
| + | * [[API:GetKey|GetKey]]() | ||
| + | * [[API:GetScreenHeight|GetScreenHeight]]() | ||
| + | * [[API:GetScreenWidth|GetScreenWidth]]() | ||
| + | * [[API:LoadImage|LoadImage]]() | ||
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| − | + | {{API:Image/navbox}} | |
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Latest revision as of 18:22, 22 May 2013
Draw the image onto the screen with zooming.
Contents
Usage
image.zoomBlit(x, y, factor);
- image Sphere Image object. The image to draw on screen.
- x number. The x coordinate of the top-left corner of the drawn image.
- y number. The y coordinate of the top-left corner of the drawn image.
- factor number, floating-point. The amount of zooming applied. factor == 1 causes no zoom, 0 < factor < 1 causes the image to shrink, factor > 1 causes the image to enlarge.
Examples
This simple game will take an image and zoom it so that it is stretched to fit the screen.
function game()
{
var w = GetScreenWidth();
var h = GetScreenHeight();
var img = LoadImage("my_test_image.png");
// Calculate by how much to zoom.
var factor = Math.min(w / img.width, h / img.height);
img.zoomBlit(0, 0, factor);
FlipScreen();
GetKey();
}Notes
- Image.transformBlit() can also be used to achieve zooming, by picking the corner points manually.
See also
- Sphere Image object
- Image.blit()
- Image.transformBlit()
- Image.transformBlitMask()
- FlipScreen()
- GetKey()
- GetScreenHeight()
- GetScreenWidth()
- LoadImage()
