var Item = require('burner').Item,
Utils = require('burner').Utils;
/**
* Creates a new RangeDisplay.
*
* A RangeDisplay is parented to a sensor and displays the sensor's
* sensitivity range.
*
* @constructor
* @extends Item
* @param {Object} [opt_options=] A map of initial properties.
*/
function RangeDisplay(opt_options) {
Item.call(this);
}
Utils.extend(RangeDisplay, Item);
/**
* Initializes RangeDisplay.
* @param {Object} world An instance of World.
* @param {Object} [opt_options=] A map of initial properties.
*/
RangeDisplay.prototype.init = function(world, opt_options) {
RangeDisplay._superClass.init.call(this, world, opt_options);
var options = opt_options || {};
if (!options || !options.sensor) {
throw new Error('RangeDisplay: a sensor is required.');
}
this.sensor = options.sensor;
this.zIndex = 10;
this.borderStyle = this.sensor.rangeDisplayBorderStyle || 'dashed';
this.borderDefaultColor = this.sensor.rangeDisplayBorderDefaultColor || [150, 150, 150];
this.borderColor = this.borderDefaultColor;
/**
* RangeDisplays have no height or color and rely on the associated DOM element's
* CSS border to render their line.
*/
this.borderWidth = 2;
this.borderRadius = 100;
this.width = this.sensor.sensitivity;
this.height = this.sensor.sensitivity;
this.minOpacity = 0.3;
this.maxOpacity = 0.6;
this.opacity = this.minOpacity;
this.maxAngularVelocity = 1;
this.minAngularVelocity = 0;
};
/**
* Called every frame, step() updates the instance's properties.
*/
RangeDisplay.prototype.step = function() {
this.location.x = this.sensor.location.x;
this.location.y = this.sensor.location.y;
// TODO: do we need angularVelocity?
/*var angularVelocity = Utils.map(this.sensor.parent.velocity.mag(),
this.sensor.parent.minSpeed, this.sensor.parent.maxSpeed,
this.maxAngularVelocity, this.minAngularVelocity);*/
if (this.sensor.activated) {
this.opacity = this.maxOpacity;
this.borderColor = this.sensor.target.color;
} else {
this.opacity = this.minOpacity;
this.borderColor = this.borderDefaultColor;
}
};
/**
* Updates the corresponding DOM element's style property.
* @function draw
* @memberof RangeDisplay
*/
RangeDisplay.prototype.draw = function() {
var cssText = this.getCSSText({
x: this.location.x - (this.width / 2),
y: this.location.y - (this.height / 2),
angle: this.angle,
scale: this.scale || 1,
width: this.width,
height: this.height,
colorMode: this.colorMode,
borderRadius: this.borderRadius,
borderWidth: this.borderWidth,
borderStyle: this.borderStyle,
borderColor0: this.borderColor[0],
borderColor1: this.borderColor[1],
borderColor2: this.borderColor[2],
visibility: this.visibility
});
this.el.style.cssText = cssText;
};
/**
* Concatenates a new cssText string.
*
* @function getCSSText
* @memberof RangeDisplay
* @param {Object} props A map of object properties.
* @returns {string} A string representing cssText.
*/
RangeDisplay.prototype.getCSSText = function(props) {
return Item._stylePosition.replace(/<x>/g, props.x).replace(/<y>/g, props.y).replace(/<angle>/g, props.angle).replace(/<scale>/g, props.scale) + 'width: ' +
props.width + 'px; height: ' + props.height + 'px; border: ' +
props.borderWidth + 'px ' + props.borderStyle + ' ' + props.colorMode + '(' + props.borderColor0 + ', ' + props.borderColor1 + (props.colorMode === 'hsl' ? '%' : '') + ', ' + props.borderColor2 + (props.colorMode === 'hsl' ? '%' : '') + '); border-radius: ' +
props.borderRadius + '%; visibility: ' + props.visibility + ';';
};
module.exports = RangeDisplay;