What is the purpose of the resize() method in PGraphics if it doesn't work?

aiapps · July 4, 2025, 11:11am

maybe it depends on the version? or it didn’t work from the start?

quark · July 4, 2025, 11:34am

The reference to the resize method why it doesn’t work. The alternative is to create a Pimage form it first like this

Pimage img = pg.get();                // where pg is a PGraphics object
img.resize(pg.width/2, pg.height/2);  // 50% original size

aiapps · July 4, 2025, 12:28pm

yes, I know it makes sense for PImage and it works.
but this method is also available for PGraphics itself

glv · July 4, 2025, 1:37pm

“Follow the white rabbit.”
— Alice in Wonderland & Morpheus in The Matrix

Source code has a comment about this:

github.com/processing/processing

core%2Fsrc%2Fprocessing%2Fcore%2FPGraphics.java

master


      
          *
          * <h2>Using xxxxImpl() for subclassing smoothness</h2>
          * The xxxImpl() methods are generally renderer-specific handling for some
          * subset if tasks for a particular function (vague enough for you?) For
          * instance, imageImpl() handles drawing an image whose x/y/w/h and u/v coords
          * have been specified, and screen placement (independent of imageMode) has
          * been determined. There's no point in all renderers implementing the
          * <tt>if (imageMode == BLAH)</tt> placement/sizing logic, so that's handled
          * by PGraphics, which then calls imageImpl() once all that is figured out.
          *
          * <h2>His brother PImage</h2>
          * PGraphics subclasses PImage so that it can be drawn and manipulated in a
          * similar fashion. As such, many methods are inherited from PGraphics,
          * though many are unavailable: for instance, resize() is not likely to be
          * implemented; the same goes for mask(), depending on the situation.
          *
          * <h2>What's in PGraphics, what ain't</h2>
          * For the benefit of subclasses, as much as possible has been placed inside
          * PGraphics. For instance, bezier interpolation code and implementations of
          * the strokeCap() method (that simply sets the strokeCap variable) are
          * handled here. Features that will vary widely between renderers are located

:)

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What is the purpose of the resize() method in PGraphics if it doesn't work?

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