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130 lines (101 loc) · 3.23 KB
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var color = require('../util/color');
var evalUtils = require('./evalUtils');
var EvalImage = require('./evalImage');
var EvalCircle = require('./evalCircle');
var EvalTriangle = require('./evalTriangle');
var EvalMulti = require('./evalMulti');
var EvalRect = require('./evalRect');
var EvalEllipse = require('./evalEllipse');
var EvalText = require('./evalText');
var EvalStar = require('./evalStar');
var EvalPolygon = require('./evalPolygon');
// We don't use blockId at all in Eval since everything is evaluated at once.
exports.display = function(object) {
if (object === undefined) {
object = '';
}
// call tolocaleString on numbers so that we get commas for large numbers
if (typeof object === 'number' && object.toLocaleString) {
object = object.toLocaleString();
}
if (!object.draw) {
object = new EvalText(object.toString(), 12, color.black);
}
Eval.displayedObject = object;
};
exports.circle = function(size, style, color) {
return new EvalCircle(size, style, color);
};
exports.triangle = function(size, style, color) {
return new EvalTriangle(size, style, color);
};
exports.overlay = function(top, bottom) {
return new EvalMulti(top, bottom);
};
exports.underlay = function(bottom, top) {
return new EvalMulti(top, bottom);
};
exports.square = function(size, style, color) {
return new EvalRect(size, size, style, color);
};
exports.rectangle = function(width, height, style, color) {
return new EvalRect(width, height, style, color);
};
exports.ellipse = function(width, height, style, color) {
return new EvalEllipse(width, height, style, color);
};
exports.text = function(text, fontSize, color) {
return new EvalText(text, fontSize, color);
};
exports.star = function(radius, style, color) {
var innerRadius = ((3 - Math.sqrt(5)) / 2) * radius;
return new EvalStar(5, innerRadius, radius, style, color);
};
exports.radialStar = function(points, inner, outer, style, color) {
return new EvalStar(points, inner, outer, style, color);
};
exports.polygon = function(points, length, style, color) {
return new EvalPolygon(points, length, style, color);
};
exports.placeImage = function(x, y, image) {
evalUtils.ensureNumber(x);
evalUtils.ensureNumber(y);
evalUtils.ensureType(image, EvalImage);
// origin at center
x = x + Eval.CANVAS_WIDTH / 2;
y = y + Eval.CANVAS_HEIGHT / 2;
// User inputs y in cartesian space. Convert to pixel space before sending
// to our EvalImage.
y = evalUtils.cartesianToPixel(y);
// relative to center of workspace
image.place(x, y);
return image;
};
exports.offset = function(x, y, image) {
evalUtils.ensureNumber(x);
evalUtils.ensureNumber(y);
evalUtils.ensureType(image, EvalImage);
x = image.x_ + x;
y = image.y_ - y;
image.place(x, y);
return image;
};
exports.rotateImage = function(degrees, image) {
evalUtils.ensureNumber(degrees);
image.rotate(degrees);
return image;
};
exports.scaleImage = function(factor, image) {
image.scale(factor, factor);
return image;
};
exports.stringAppend = function(first, second) {
evalUtils.ensureString(first);
evalUtils.ensureString(second);
return first + second;
};
// polling for values
exports.stringLength = function(str) {
evalUtils.ensureString(str);
return str.length;
};