Make the equal pixels transparent

[flore77]

Need

As a user
I need to see the differences immediately
So that I don't struggle to see the little ones

Deliverables

• [ ] Possibility to make the equal pixels of the diff image transparent
• [ ] tests

Solution

Adding another field to the options object:

options = {
  transparency: {Number} between 0 - 255 // default 255
};

Modifying the setPixel method from the prototype of PNGOut, to receive another parameter, that will be set on the alpha channel, i.e this._png.data[idx +3].

[kunwardeep]

anything stopping us merging this ?

[sipayRT]

sorry, will check it today

[maksim-kucherov]

The fix will really help us. We need some universal automatic way to find out 'diff zone' in diff images. So, transparent pixel will be a marker of 'diff pixel'.

[mickaelperrin]

Any update on this ?