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protoblocks.js
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// Copyright (c) 2014-19 Walter Bender
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the The GNU Affero General Public
// License as published by the Free Software Foundation; either
// version 3 of the License, or (at your option) any later version.
//
// You should have received a copy of the GNU Affero General Public
// License along with this library; if not, write to the Free Software
// Foundation, 51 Franklin Street, Suite 500 Boston, MA 02110-1335 USA
// The ProtoBlock class is defined in this file. Protoblocks are the
// prototypes from which Blocks are created.
// Note that protoblocks.js is largely deprecated. It is only used to
// generate palette blocks.
// Protoblock contain generic information about blocks and some
// methods common to all blocks.
class ProtoBlock {
constructor(name) {
// Name is used run-dictionary index, and palette label.
this.name = name;
// The palette to which this block is assigned.
this.palette = null;
// The graphic style used by the block.
this.style = null;
// The generator function used to create the artwork
this.generator = null;
// Does the block expand (or collapse) when other blocks are
// attached? e.g., start, repeat...
this.expandable = false;
// Is this block a parameter? Parameters have their labels
// overwritten with their current value.
this.parameter = false;
// How many "non-flow" arguments does a block have? (flow is
// vertical down a stack; args are horizontal. The pendown block
// has 0 args; the forward block has 1 arg; the setxy block has 2
// args.
this.args = 0;
// Default values for block parameters, e.g., forward 100 or right 90.
this.defaults = [];
// What is the size of the block prior to any expansion?
this.size = 1.0;
// Dock types are a list of the types associated with the docking points.
this.dockTypes = [];
// Static labels are generated as part of the inline SVG.
this.staticLabels = [];
// Default fontsize used for static labels.
this.fontsize = null;
// Extra block width for long labels
this.extraWidth = 0;
// Block scale
this.scale = DEFAULTBLOCKSCALE;
// The filepath of the image.
this.image = null;
// Hidden: don't show on any palette
this.hidden = false;
// Disabled: use inactive colors
this.disabled = false;
// Deprecated
this.deprecated = false;
//Stores the width of the text component
this.textWidth = 0;
this.labelOffset = 0;
this.beginnerModeBlock = false;
}
adjustWidthToLabel() {
if (this.staticLabels.length === 0) {
return;
}
const c = new createjs.Container();
const text = new createjs.Text(
this.staticLabels[0],
this.fontSize + "px Sans",
"#000000"
);
c.addChild(text);
const b = c.getBounds();
this.textWidth = b.width;
this.extraWidth += Math.max(b.width - 30, 0);
}
// What follows are the initializations for different block
// styles.
// The generator methods return the svg artwork, the dock
// positions, and the width and height, and the height used to
// calculate the hit area for the block. (Note that clamp blocks
// only extend their hit area to the top of the clamp.)
// E.g., penup, pendown
zeroArgBlock() {
this.args = 0;
this.dockTypes.push("out");
this.dockTypes.push("in");
this.generator = this.zeroArgBlockGenerator;
}
zeroArgBlockGenerator() {
const svg = new SVG();
svg.setScale(this.scale);
svg.setTab(true);
svg.setSlot(true);
if (this.fontsize) {
svg.setFontSize(this.fontsize);
}
svg.setExpand(30 + this.extraWidth, 0, 0, 0);
return [
svg.basicBlock(),
svg.docks,
svg.getWidth(),
svg.getHeight(),
svg.getHeight()
];
}
// E.g., hidden (used at end of clamp)
hiddenBlockFlow() {
this.args = 0;
this.size = 0;
this.dockTypes.push("out");
this.dockTypes.push("in");
this.generator = this.hiddenBlockFlowGenerator;
}
// E.g., hidden (used at end of no flow clamp)
hiddenBlockNoFlow() {
this.args = 0;
this.size = 0;
this.dockTypes.push("out");
this.dockTypes.push("unavailable");
this.generator = this.hiddenBlockFlowGenerator;
}
hiddenBlockFlowGenerator() {
const svg = new SVG();
svg.setScale(this.scale);
svg.setSlot(true);
svg.setTab(true);
if (this.fontsize) {
svg.setFontSize(this.fontsize);
}
// We need to generate the artwork in order to generate the dock.
let artwork = svg.basicBlock();
// Then we replace the artwork with a single pixel.
artwork =
'<svg xmlns="http://www.w3.org/2000/svg" width="1" height="1"><text style="font-size:10px;fill:#000000;font-family:sans-serif;text-anchor:end"><tspan x="46.333333333333336" y="13.5">block_label</tspan></text></svg>';
// And bring the last dock position to the top.
svg.docks[1][1] = svg.docks[0][1];
return [artwork, svg.docks, 0, 0, 0];
}
// E.g., break
basicBlockNoFlow() {
this.args = 0;
this.dockTypes.push("out");
this.dockTypes.push("unavailable");
this.generator = this.basicBlockNoFlowGenerator;
}
basicBlockNoFlowGenerator() {
const svg = new SVG();
svg.setScale(this.scale);
svg.setSlot(true);
svg.setTail(true);
if (this.fontsize) {
svg.setFontSize(this.fontsize);
}
svg.setExpand(30 + this.extraWidth, 0, 0, 0);
return [
svg.basicBlock(),
svg.docks,
svg.getWidth(),
svg.getHeight(),
svg.getHeight()
];
}
// E.g., collapsed
basicBlockCollapsed() {
this.args = 0;
this.dockTypes.push("unavailable");
this.dockTypes.push("unavailable");
this.generator = this.basicBlockCollapsedGenerator;
}
basicBlockCollapsedGenerator() {
const svg = new SVG();
svg.setScale(this.scale);
svg.setCap(true);
svg.setTail(true);
if (this.fontsize) {
svg.setFontSize(this.fontsize);
}
svg.setExpand(30 + this.extraWidth, 0, 0, 0);
return [
svg.basicBlock(),
svg.docks,
svg.getWidth(),
svg.getHeight(),
svg.getHeight()
];
}
// E.g., forward, right
oneArgBlock() {
this.args = 1;
this.dockTypes.push("out");
this.dockTypes.push("numberin");
this.dockTypes.push("in");
this.generator = this.oneArgBlockGenerator;
}
oneArgBlockGenerator() {
const svg = new SVG();
svg.setScale(this.scale);
svg.setTab(true);
svg.setInnies([true]);
svg.setSlot(true);
if (this.fontsize) {
svg.setFontSize(this.fontsize);
}
svg.setExpand(30 + this.extraWidth, 0, 0, 0);
return [
svg.basicBlock(),
svg.docks,
svg.getWidth(),
svg.getHeight(),
svg.getHeight()
];
}
// E.g., wait for
oneBooleanArgBlock() {
this.args = 1;
this.size = 1;
this.dockTypes.push("out");
this.dockTypes.push("booleanin");
this.dockTypes.push("in");
this.generator = this.oneBooleanArgBlockGenerator;
}
oneBooleanArgBlockGenerator() {
const svg = new SVG();
svg.setScale(this.scale);
svg.setTab(true);
svg.setSlot(true);
svg.setBoolean(true);
svg.setClampCount(0);
if (this.fontsize) {
svg.setFontSize(this.fontsize);
}
svg.setExpand(30 + this.extraWidth, 0, 0, 0);
return [
svg.basicBlock(),
svg.docks,
svg.getWidth(),
svg.getHeight(),
svg.getHeight()
];
}
// E.g., setxy. These are expandable.
twoArgBlock() {
this.expandable = true;
this.style = "twoarg";
this.size = 2;
this.args = 2;
this.dockTypes.push("out");
this.dockTypes.push("numberin");
this.dockTypes.push("numberin");
this.dockTypes.push("in");
this.generator = this.twoArgBlockGenerator;
}
twoArgBlockGenerator(expandY) {
const svg = new SVG();
svg.setScale(this.scale);
svg.setTab(true);
svg.setInnies([true, true]);
svg.setSlot(true);
if (expandY) {
svg.setExpand(
30 + this.extraWidth,
((expandY - 1) * STANDARDBLOCKHEIGHT) / 2, 0, 0);
} else {
svg.setExpand(30 + this.extraWidth, 0, 0, 0);
}
if (this.fontsize) {
svg.setFontSize(this.fontsize);
}
return [
svg.basicBlock(),
svg.docks,
svg.getWidth(),
svg.getHeight(),
svg.getHeight()
];
}
// E.g., ??? These are expandable.
threeArgBlock() {
this.expandable = true;
this.style = "twoarg";
this.size = 3;
this.args = 3;
this.dockTypes.push("out");
this.dockTypes.push("numberin");
this.dockTypes.push("numberin");
this.dockTypes.push("numberin");
this.dockTypes.push("in");
this.generator = this.threeArgBlockGenerator;
}
threeArgBlockGenerator(expandY) {
const svg = new SVG();
svg.setScale(this.scale);
svg.setTab(true);
svg.setInnies([true, true, true]);
svg.setSlot(true);
if (expandY) {
svg.setExpand(
30 + this.extraWidth,
((expandY - 1) * STANDARDBLOCKHEIGHT) / 2, 0, 0);
} else {
svg.setExpand(30 + this.extraWidth, 0, 0, 0);
}
if (this.fontsize) {
svg.setFontSize(this.fontsize);
}
return [
svg.basicBlock(),
svg.docks,
svg.getWidth(),
svg.getHeight(),
svg.getHeight()
];
}
fourArgBlock() {
this.expandable = true;
this.style = "twoarg";
this.size = 4;
this.args = 4;
this.dockTypes.push("out");
this.dockTypes.push("numberin");
this.dockTypes.push("numberin");
this.dockTypes.push("numberin");
this.dockTypes.push("numberin");
this.dockTypes.push("in");
this.generator = this.fourArgBlockGenerator;
}
fourArgBlockGenerator(expandY) {
const svg = new SVG();
svg.setScale(this.scale);
svg.setTab(true);
svg.setInnies([true, true, true, true]);
svg.setSlot(true);
if (expandY) {
svg.setExpand(
30 + this.extraWidth,
((expandY - 1) * STANDARDBLOCKHEIGHT) / 2, 0, 0);
} else {
svg.setExpand(30 + this.extraWidth, 0, 0, 0);
}
if (this.fontsize) {
svg.setFontSize(this.fontsize);
}
return [
svg.basicBlock(),
svg.docks,
svg.getWidth(),
svg.getHeight(),
svg.getHeight()
];
}
// E.g., sqrt, box
oneArgMathBlock() {
this.style = "arg";
this.size = 1;
this.args = 1;
this.parameter = true;
this.dockTypes.push("numberout");
this.dockTypes.push("numberin");
this.generator = this.oneArgMathBlockGenerator;
}
oneArgMathBlockGenerator() {
const svg = new SVG();
svg.setScale(this.scale);
svg.setSlot(false);
svg.setInnies([true]);
svg.setOutie(true);
svg.setTab(false);
if (this.fontsize) {
svg.setFontSize(this.fontsize);
}
svg.setExpand(30 + this.extraWidth, 0, 0, 0);
return [
svg.basicBlock(),
svg.docks,
svg.getWidth(),
svg.getHeight(),
svg.getHeight()
];
}
// E.g., plus, minus, multiply, divide, power,distance. These are also expandable.
twoArgMathBlock() {
this.expandable = true;
this.style = "arg";
this.size = 2;
this.args = 2;
this.parameter = true;
this.dockTypes.push("numberout");
this.dockTypes.push("numberin");
this.dockTypes.push("numberin");
this.generator = this.twoArgMathBlockGenerator;
}
twoArgMathBlockGenerator(expandY) {
const svg = new SVG();
svg.setScale(this.scale);
svg.setSlot(false);
svg.setInnies([true, true]);
svg.setOutie(true);
svg.setTab(false);
if (expandY) {
svg.setExpand(
30 + this.extraWidth,
((expandY - 1) * STANDARDBLOCKHEIGHT) / 2, 0, 0);
} else {
svg.setExpand(30 + this.extraWidth, 0, 0, 0);
}
if (this.fontsize) {
svg.setFontSize(this.fontsize);
}
return [
svg.basicBlock(),
svg.docks,
svg.getWidth(),
svg.getHeight(),
svg.getHeight()
];
}
//
threeArgMathBlock() {
this.expandable = true;
this.style = "arg";
this.size = 3;
this.args = 3;
this.parameter = true;
this.dockTypes.push("numberout");
this.dockTypes.push("numberin");
this.dockTypes.push("numberin");
this.dockTypes.push("numberin");
this.generator = this.threeArgMathBlockGenerator;
}
threeArgMathBlockGenerator(expandY) {
const svg = new SVG();
svg.setScale(this.scale);
svg.setSlot(false);
svg.setInnies([true, true, true]);
svg.setOutie(true);
svg.setTab(false);
if (expandY) {
svg.setExpand(
30 + this.extraWidth,
((expandY - 1) * STANDARDBLOCKHEIGHT) / 2, 0, 0);
} else {
svg.setExpand(30 + this.extraWidth, 0, 0, 0);
}
if (this.fontsize) {
svg.setFontSize(this.fontsize);
}
return [
svg.basicBlock(),
svg.docks,
svg.getWidth(),
svg.getHeight(),
svg.getHeight()
];
}
// E.g., distance . Distance block will calculate geometrical distance between two pointa
// by default (cursor x ,cursor y ) and x and y
fourArgMathBlock() {
this.expandable = true;
this.style = "arg";
this.size = 4;
this.args = 4;
this.parameter = true;
this.dockTypes.push("numberout");
this.dockTypes.push("numberin");
this.dockTypes.push("numberin");
this.dockTypes.push("numberin");
this.dockTypes.push("numberin");
this.generator = this.fourArgMathBlockGenerator;
}
fourArgMathBlockGenerator(expandY) {
const svg = new SVG();
svg.setScale(this.scale);
svg.setSlot(false);
svg.setInnies([true, true, true, true]);
svg.setOutie(true);
svg.setTab(false);
if (expandY) {
svg.setExpand(
30 + this.extraWidth,
((expandY - 1) * STANDARDBLOCKHEIGHT) / 2, 0, 0);
} else {
svg.setExpand(30 + this.extraWidth, 0, 0, 0);
}
if (this.fontsize) {
svg.setFontSize(this.fontsize);
}
return [
svg.basicBlock(),
svg.docks,
svg.getWidth(),
svg.getHeight(),
svg.getHeight()
];
}
// E.g., number, string. Value blocks get DOM textareas associated
// with them so their values can be edited by the user.
valueBlock() {
this.style = "value";
this.size = 1;
this.args = 0;
this.dockTypes.push("numberout");
this.generator = this.valueBlockGenerator;
}
valueBlockGenerator() {
const svg = new SVG();
svg.setScale(this.scale);
// Extra room for parameter label
svg.setExpand(60 + this.extraWidth, 0, 0, 0);
svg.setOutie(true);
if (this.fontsize) {
svg.setFontSize(this.fontsize);
}
return [
svg.basicBox(),
svg.docks,
svg.getWidth(),
svg.getHeight(),
svg.getHeight()
];
}
// E.g., media. Media blocks invoke a chooser and a thumbnail
// image is overlayed to represent the data associated with the
// block.
mediaBlock() {
this.style = "value";
this.size = 2;
this.args = 0;
this.dockTypes.push("mediaout");
this.generator = this.mediaBlockGenerator;
}
mediaBlockGenerator() {
const svg = new SVG();
svg.setScale(this.scale);
// Extra room for graphics
svg.setExpand(60 + this.extraWidth, 23, 0, 0);
svg.setOutie(true);
if (this.fontsize) {
svg.setFontSize(this.fontsize);
}
return [
svg.basicBox(),
svg.docks,
svg.getWidth(),
svg.getHeight(),
svg.getHeight()
];
}
// E.g., start. A "child" flow is docked in an expandable clamp.
// There are no additional arguments and no flow above or below.
stackClampZeroArgBlock() {
this.style = "clamp";
this.expandable = true;
this.size = 3;
this.args = 1;
this.dockTypes.push("unavailable");
this.dockTypes.push("in");
this.dockTypes.push("unavailable");
this.generator = this.stackClampZeroArgBlockGenerator;
}
stackClampZeroArgBlockGenerator(slots) {
const svg = new SVG();
svg.setScale(this.scale);
svg.setCap(true);
svg.setTail(true);
svg.setExpand(20 + this.extraWidth, 0, 0, 0);
svg.setLabelOffset(this.labelOffset);
if (slots) {
svg.setClampSlots(0, slots);
} else {
svg.setClampSlots(0, 1);
}
if (this.fontsize) {
svg.setFontSize(this.fontsize);
}
return [
svg.basicClamp(),
svg.docks,
svg.getWidth(),
svg.getHeight(),
svg.docks[1][1]
];
}
// E.g., emptyclamp. Unlike start, there is a flow above and below.
flowClampBlock() {
this.style = "clamp";
this.expandable = true;
this.size = 2;
this.args = 1;
this.dockTypes.push("out");
this.dockTypes.push("in");
this.dockTypes.push("in");
this.generator = this.flowClampBlockGenerator;
}
flowClampBlockGenerator(slots) {
const svg = new SVG();
svg.setScale(this.scale);
svg.setTab(true);
svg.setSlot(true);
svg.setExpand(20 + this.extraWidth, 0, 0, 0);
if (slots) {
svg.setClampSlots(0, slots);
} else {
svg.setClampSlots(0, 1);
}
if (this.fontsize) {
svg.setFontSize(this.fontsize);
}
return [
svg.basicClamp(),
svg.docks,
svg.getWidth(),
svg.getHeight(),
svg.docks[1][1]
];
}
// E.g., repeat. Unlike action, there is a flow above and below.
flowClampOneArgBlock() {
this.style = "clamp";
this.expandable = true;
this.size = 2;
this.args = 2;
this.dockTypes.push("out");
this.dockTypes.push("numberin");
this.dockTypes.push("in");
this.dockTypes.push("in");
this.generator = this.flowClampOneArgBlockGenerator;
}
flowClampOneArgBlockGenerator(slots) {
const svg = new SVG();
svg.setScale(this.scale);
svg.setTab(true);
svg.setSlot(true);
svg.setInnies([true]);
svg.setLabelOffset(this.labelOffset);
svg.setExpand(20 + this.extraWidth, 0, 0, 0);
if (slots) {
svg.setClampSlots(0, slots);
} else {
svg.setClampSlots(0, 1);
}
if (this.fontsize) {
svg.setFontSize(this.fontsize);
}
return [
svg.basicClamp(),
svg.docks,
svg.getWidth(),
svg.getHeight(),
svg.docks[2][1]
];
}
// E.g., tuplet, which takes two args plus an interior flow.
// There is a flow above and below.
flowClampTwoArgBlock() {
this.style = "clamp";
this.expandable = true;
this.size = 3;
this.args = 3;
this.dockTypes.push("out");
this.dockTypes.push("numberin");
this.dockTypes.push("numberin");
this.dockTypes.push("in");
this.dockTypes.push("in");
this.generator = this.flowClampTwoArgBlockGenerator;
}
flowClampTwoArgBlockGenerator(slots) {
const svg = new SVG();
svg.setScale(this.scale);
svg.setTab(true);
svg.setSlot(true);
svg.setInnies([true, true]);
svg.setExpand(20 + this.extraWidth, 0, 0, 0);
if (slots) {
svg.setClampSlots(0, slots);
} else {
svg.setClampSlots(0, 1);
}
if (this.fontsize) {
svg.setFontSize(this.fontsize);
}
return [
svg.basicClamp(),
svg.docks,
svg.getWidth(),
svg.getHeight(),
svg.docks[3][1]
];
}
flowClampThreeArgBlock() {
this.style = "clamp";
this.expandable = true;
this.size = 4;
this.args = 4;
this.dockTypes.push("out");
this.dockTypes.push("numberin");
this.dockTypes.push("numberin");
this.dockTypes.push("textin");
this.dockTypes.push("in");
this.dockTypes.push("in");
this.generator = this.flowClampThreeArgBlockGenerator;
}
flowClampThreeArgBlockGenerator(slots) {
const svg = new SVG();
svg.setScale(this.scale);
svg.setTab(true);
svg.setSlot(true);
svg.setInnies([true, true, true]);
svg.setExpand(20 + this.extraWidth, 0, 0, 0);
if (slots) {
svg.setClampSlots(0, slots);
} else {
svg.setClampSlots(0, 1);
}
if (this.fontsize) {
svg.setFontSize(this.fontsize);
}
return [
svg.basicClamp(),
svg.docks,
svg.getWidth(),
svg.getHeight(),
svg.docks[4][1]
];
}
// E.g., do with args: innies instead of interior slots.
argClampOneArgBlock() {
this.style = "argclamp";
this.expandable = true;
this.size = 3;
this.args = 2;
this.dockTypes.push("out");
this.dockTypes.push("textin");
this.dockTypes.push("anyin");
this.dockTypes.push("in");
this.generator = this.argClampOneArgBlockGenerator;
}
argClampOneArgBlockGenerator(slots) {
const svg = new SVG();
svg.setScale(this.scale);
svg.setTab(true);
svg.setSlot(true);
svg.setInnies([true]);
svg.setExpand(20 + this.extraWidth, 0, 0, 0);
if (slots) {
svg.setClampSlots(0, slots);
} else {
svg.setClampSlots(0, [1]);
}
if (this.fontsize) {
svg.setFontSize(this.fontsize);
}
// The hit area extends halfway between the label dock and the
// first innie arg dock.
return [
svg.argClamp(),
svg.docks,
svg.getWidth(),
svg.getHeight(),
(svg.docks[1][1] + svg.docks[2][1]) / 2
];
}
// E.g., calculate with args: innies instead of interior slots.
argClampOneArgMathBlock() {
this.style = "argclamparg";
this.expandable = true;
this.size = 3;
this.args = 2;
this.dockTypes.push("anyout");
this.dockTypes.push("textin");
this.dockTypes.push("anyin");
this.generator = this.argClampOneArgMathBlockGenerator;
}
argClampOneArgMathBlockGenerator(slots) {
const svg = new SVG();
svg.setScale(this.scale);
svg.setInnies([true]);
svg.setOutie(true);
svg.setTab(false);
svg.setSlot(false);
svg.setExpand(20 + this.extraWidth, 0, 0, 0);
if (slots) {
svg.setClampSlots(0, slots);
} else {
svg.setClampSlots(0, [1]);
}
if (this.fontsize) {
svg.setFontSize(this.fontsize);
}
// The hit area extends halfway between the label dock and the
// first innie arg dock.
return [
svg.argClamp(),
svg.docks,
svg.getWidth(),
svg.getHeight(),
(svg.docks[1][1] + svg.docks[2][1]) / 2
];
}
// E.g., named do with args: innies instead of interior slots.
argClampBlock() {
this.style = "argclamp";
this.expandable = true;
this.size = 3;
this.args = 1;
this.dockTypes.push("out");
this.dockTypes.push("anyin");
this.dockTypes.push("in");
this.generator = this.argClampBlockGenerator;
}
argClampBlockGenerator(slots) {
const svg = new SVG();
svg.setScale(this.scale);
svg.setTab(true);
svg.setSlot(true);
svg.setExpand(20 + this.extraWidth, 0, 0, 0);
if (slots) {
svg.setClampSlots(0, slots);
} else {
svg.setClampSlots(0, [1]);
}
if (this.fontsize) {
svg.setFontSize(this.fontsize);
}
return [
svg.argClamp(),
svg.docks,
svg.getWidth(),
svg.getHeight(),
(svg.docks[1][1] * 2) / 3
];
}
// E.g., named calculate with args: innies instead of interior slots.
argClampMathBlock() {
this.style = "argclamparg";
this.expandable = true;
this.size = 3;
this.args = 1;
this.dockTypes.push("anyout");
this.dockTypes.push("anyin");
this.generator = this.argClampMathBlockGenerator;
}
argClampMathBlockGenerator(slots) {
const svg = new SVG();
svg.setScale(this.scale);
svg.setOutie(true);
svg.setTab(false);
svg.setSlot(false);
svg.setExpand(20 + this.extraWidth, 0, 0, 0);
if (slots) {
svg.setClampSlots(0, slots);
} else {
svg.setClampSlots(0, [1]);
}
if (this.fontsize) {
svg.setFontSize(this.fontsize);
}
return [
svg.argClamp(),
svg.docks,
svg.getWidth(),
svg.getHeight(),
(svg.docks[1][1] * 2) / 3
];
}
// E.g., if. A "child" flow is docked in an expandable clamp. The
// additional argument is a boolean. There is flow above and below.
flowClampBooleanArgBlock() {
this.style = "clamp";
this.expandable = true;
this.size = 3;
this.args = 2;
this.dockTypes.push("out");
this.dockTypes.push("booleanin");
this.dockTypes.push("in");
this.dockTypes.push("in");
this.generator = this.flowClampBooleanArgBlockGenerator;
}
flowClampBooleanArgBlockGenerator(slots) {
const svg = new SVG();
svg.setScale(this.scale);
svg.setTab(true);