PxReduceImage

Gamma/Photon: Using Gamma™ with the Photon microGUIŽ, Version 4.0
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# `PxReduceImage`

`PxReduceImage` -- resizes images by percentage.

## Syntax

    PxReduceImage (image, xscale, yscale)

## Arguments

`image`

  An image.

`xscale`

  The x-scale resize factor.

`yscale`

  The y-scale resize factor.

## Returns

The resized image.

## Description

This function is used to resize images. The `xscale` and `yscale` are percentages of 1. Entries less than 1 reduce the image, those greater than 1 enlarge it. Images can be resized in differing proportions on the x and y axes, which permits image distortion.

## Example

This example, `ex_PxReduceImage.g`, is included in the `gamma_ph_`#`_examples_1_QNX4.tgz` file available on the Cogent Web Site.

    #!/usr/cogent/bin/phgamma

    /*
    This example shows three images in a window.  The first image is full
    size, the second is reduced on the x and y axes, and the third is
    enlarged on the x axis and reduced on the y axis.
    */

    PtInit(nil);
    require_lisp("PhotonWidgets");

    win = new(PtWindow);

    pic = PxLoadImage("smiley.bmp");

    lab = new(PtLabel);
    lab.label_type = Pt_IMAGE;
    lab.label_data = pic;

    lab2 = new(PtLabel);
    lab2.label_type = Pt_IMAGE;
    lab2.label_data = PxReduceImage(pic,.5,.5);
    lab2.SetPos(100,0);

    lab3 = new(PtLabel);
    lab3.label_type = Pt_IMAGE;
    lab3.label_data = PxReduceImage(pic,2,.25);
    lab3.SetPos(100,60);

    PtRealizeWidget(win);
    PtMainLoop();

## See Also

PxLoadImage, ImageThumbNail

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