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Add new blocks

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change pen transparency by (num)
set pen transparency to (num)
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Ken 2017-08-25 15:07:38 +08:00 committed by GitHub
parent f6189903f8
commit e30e5809d1
1 changed files with 29 additions and 1 deletions
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30
src/blocks/scratch3_pen.js
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@ -214,7 +214,9 @@ class Scratch3PenBlocks {
pen_changepenshadeby: this.changePenShadeBy,
pen_setpenshadeto: this.setPenShadeToNumber,
pen_changepensizeby: this.changePenSizeBy,
pen_setpensizeto: this.setPenSizeTo
pen_setpensizeto: this.setPenSizeTo,
pen_changepentransparencyby: this.changePenTransparencyBy,
pen_setpentransparencyto: this.setPenTransparencyTo
};
}
@ -371,6 +373,32 @@ class Scratch3PenBlocks {
const penAttributes = this._getPenState(util.target).penAttributes;
penAttributes.diameter = this._clampPenSize(Cast.toNumber(args.SIZE));
}
/**
* The pen "change pen transparency by {number}" block changes the "transparency" of the pen, related to the RGB value.
* @param {object} args - the block arguments.
* @property {number} TRANSPARENCY - the amount of desired transparency change.
* @param {object} util - utility object provided by the runtime.
*/
changePenTransparencyBy (args, util) {
const penState = this._getPenState(util.target);
penState.penAttributes.color4f[3] = penState.penAttributes.color4f[3] + (args.TRANSPARENCY / 255);
this._updatePenColor(penState);
}
/**
* The pen "set pen transparency to {number}" block sets the "transparency" of the pen, related to the RGB value.
* @param {object} args - the block arguments.
* @property {number} TRANSPARENCY - the amount of desired transparency change.
* @param {object} util - utility object provided by the runtime.
*/
setPenTransparencyTo (args, util) {
const penState = this._getPenState(util.target);
penState.penAttributes.color4f[3] = args.TRANSPARENCY / 255;
this._updatePenColor(penState);
}
}
module.exports = Scratch3PenBlocks;