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90b3f75d82
Our files are up to a decade old, and have churned so much, that the initial author of the file no longer has much meaning. Furthermore, this will encourage developers to post to the developer group, rather than emailing Googlers (usually me) directly.
76 lines
2.8 KiB
JavaScript
76 lines
2.8 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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'use strict';
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goog.provide('Blockly.Lua.colour');
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goog.require('Blockly.Lua');
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Blockly.Lua['colour_picker'] = function(block) {
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// Colour picker.
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var code = Blockly.Lua.quote_(block.getFieldValue('COLOUR'));
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return [code, Blockly.Lua.ORDER_ATOMIC];
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};
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Blockly.Lua['colour_random'] = function(block) {
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// Generate a random colour.
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var code = 'string.format("#%06x", math.random(0, 2^24 - 1))';
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return [code, Blockly.Lua.ORDER_HIGH];
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};
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Blockly.Lua['colour_rgb'] = function(block) {
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// Compose a colour from RGB components expressed as percentages.
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var functionName = Blockly.Lua.provideFunction_(
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'colour_rgb',
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['function ' + Blockly.Lua.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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var r = Blockly.Lua.valueToCode(block, 'RED',
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Blockly.Lua.ORDER_NONE) || 0;
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var g = Blockly.Lua.valueToCode(block, 'GREEN',
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Blockly.Lua.ORDER_NONE) || 0;
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var b = Blockly.Lua.valueToCode(block, 'BLUE',
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Blockly.Lua.ORDER_NONE) || 0;
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var code = functionName + '(' + r + ', ' + g + ', ' + b + ')';
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return [code, Blockly.Lua.ORDER_HIGH];
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};
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Blockly.Lua['colour_blend'] = function(block) {
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// Blend two colours together.
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var functionName = Blockly.Lua.provideFunction_(
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'colour_blend',
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['function ' + Blockly.Lua.FUNCTION_NAME_PLACEHOLDER_ +
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'(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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var colour1 = Blockly.Lua.valueToCode(block, 'COLOUR1',
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Blockly.Lua.ORDER_NONE) || '\'#000000\'';
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var colour2 = Blockly.Lua.valueToCode(block, 'COLOUR2',
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Blockly.Lua.ORDER_NONE) || '\'#000000\'';
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var ratio = Blockly.Lua.valueToCode(block, 'RATIO',
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Blockly.Lua.ORDER_NONE) || 0;
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var code = functionName + '(' + colour1 + ', ' + colour2 + ', ' + ratio + ')';
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return [code, Blockly.Lua.ORDER_HIGH];
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};
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