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a11419d6b7
* refactor(generators): Introduce LuaGenerator class, Order enum * refactor(generators): Use Order.* instead of .ORDER_* * refactor(generators): Don't rename luaGenerator
72 lines
2.6 KiB
JavaScript
72 lines
2.6 KiB
JavaScript
/**
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* @license
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* Copyright 2016 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @fileoverview Generating Lua for colour blocks.
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*/
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import * as goog from '../../closure/goog/goog.js';
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goog.declareModuleId('Blockly.Lua.colour');
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import {luaGenerator, Order} from '../lua.js';
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luaGenerator.forBlock['colour_picker'] = function(block) {
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// Colour picker.
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const code = luaGenerator.quote_(block.getFieldValue('COLOUR'));
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return [code, Order.ATOMIC];
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};
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luaGenerator.forBlock['colour_random'] = function(block) {
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// Generate a random colour.
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const code = 'string.format("#%06x", math.random(0, 2^24 - 1))';
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return [code, Order.HIGH];
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};
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luaGenerator.forBlock['colour_rgb'] = function(block) {
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// Compose a colour from RGB components expressed as percentages.
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const functionName = luaGenerator.provideFunction_('colour_rgb', `
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function ${luaGenerator.FUNCTION_NAME_PLACEHOLDER_}(r, g, b)
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r = math.floor(math.min(100, math.max(0, r)) * 2.55 + .5)
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g = math.floor(math.min(100, math.max(0, g)) * 2.55 + .5)
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b = math.floor(math.min(100, math.max(0, b)) * 2.55 + .5)
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return string.format("#%02x%02x%02x", r, g, b)
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end
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`);
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const r = luaGenerator.valueToCode(block, 'RED', Order.NONE) || 0;
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const g = luaGenerator.valueToCode(block, 'GREEN', Order.NONE) || 0;
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const b = luaGenerator.valueToCode(block, 'BLUE', Order.NONE) || 0;
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const code = functionName + '(' + r + ', ' + g + ', ' + b + ')';
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return [code, Order.HIGH];
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};
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luaGenerator.forBlock['colour_blend'] = function(block) {
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// Blend two colours together.
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const functionName = luaGenerator.provideFunction_('colour_blend', `
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function ${luaGenerator.FUNCTION_NAME_PLACEHOLDER_}(colour1, colour2, ratio)
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local r1 = tonumber(string.sub(colour1, 2, 3), 16)
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local r2 = tonumber(string.sub(colour2, 2, 3), 16)
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local g1 = tonumber(string.sub(colour1, 4, 5), 16)
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local g2 = tonumber(string.sub(colour2, 4, 5), 16)
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local b1 = tonumber(string.sub(colour1, 6, 7), 16)
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local b2 = tonumber(string.sub(colour2, 6, 7), 16)
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local ratio = math.min(1, math.max(0, ratio))
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local r = math.floor(r1 * (1 - ratio) + r2 * ratio + .5)
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local g = math.floor(g1 * (1 - ratio) + g2 * ratio + .5)
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local b = math.floor(b1 * (1 - ratio) + b2 * ratio + .5)
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return string.format("#%02x%02x%02x", r, g, b)
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end
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`);
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const colour1 =
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luaGenerator.valueToCode(block, 'COLOUR1', Order.NONE) || "'#000000'";
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const colour2 =
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luaGenerator.valueToCode(block, 'COLOUR2', Order.NONE) || "'#000000'";
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const ratio = luaGenerator.valueToCode(block, 'RATIO', Order.NONE) || 0;
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const code =
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functionName + '(' + colour1 + ', ' + colour2 + ', ' + ratio + ')';
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return [code, Order.HIGH];
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};
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