Adobe 65011817 - Fireworks CS4 - Mac, Расширенное руководство пользователя, Страница: 303 / 336

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EXTENDING FIREWORKS
Auto Shapes
Las t up d a ted 12/8/2009
Defining the shape
The following code creates the initial shape, a rectangle (a more concise way of creating an initial shape follows this
example):
function InsertSmartShapeAt()
{
smartShape.elem.elements[0] = new Path;
smartShape.elem.elements[0].contours[0] = new Contour;
smartShape.elem.elements[0].contours[0].nodes[0] = new ContourNode;
smartShape.elem.elements[0].contours[0].nodes[0].predX = 0;
smartShape.elem.elements[0].contours[0].nodes[0].predY = 0;
smartShape.elem.elements[0].contours[0].nodes[0].x = 0;
smartShape.elem.elements[0].contours[0].nodes[0].y = 0;
smartShape.elem.elements[0].contours[0].nodes[0].succX = 0;
smartShape.elem.elements[0].contours[0].nodes[0].succY = 0;
smartShape.elem.elements[0].contours[0].nodes[1] = new ContourNode;
smartShape.elem.elements[0].contours[0].nodes[1].predX = 200;
smartShape.elem.elements[0].contours[0].nodes[1].predY = 0;
smartShape.elem.elements[0].contours[0].nodes[1].x = 200;
smartShape.elem.elements[0].contours[0].nodes[1].y = 0;
smartShape.elem.elements[0].contours[0].nodes[1].succX = 200;
smartShape.elem.elements[0].contours[0].nodes[1].succY = 0;
smartShape.elem.elements[0].contours[0].nodes[2] = new ContourNode;
smartShape.elem.elements[0].contours[0].nodes[2].predX = 200;
smartShape.elem.elements[0].contours[0].nodes[2].predY = 125;
smartShape.elem.elements[0].contours[0].nodes[2].x = 200;
smartShape.elem.elements[0].contours[0].nodes[2].y = 125;
smartShape.elem.elements[0].contours[0].nodes[2].succX = 200;
smartShape.elem.elements[0].contours[0].nodes[2].succY = 125;
smartShape.elem.elements[0].contours[0].nodes[3] = new ContourNode;
smartShape.elem.elements[0].contours[0].nodes[3].predX = 0;
smartShape.elem.elements[0].contours[0].nodes[3].predY = 125;
smartShape.elem.elements[0].contours[0].nodes[3].x = 0;
smartShape.elem.elements[0].contours[0].nodes[3].y = 125;
smartShape.elem.elements[0].contours[0].nodes[3].succX = 0;
smartShape.elem.elements[0].contours[0].nodes[3].succY = 125;
smartShape.elem.elements[0].contours[0].isClosed = true;
}
The Auto Shape is an array of ContourNode objects (see “ ContourNode object ” on page 239). You can write a “helper”
function to simplify the code and assign ContourNode properties, as shown in the following example:
function addPathPoint(contour, i, x, y)
{
var theNodes = contour.nodes;
// Increase the length to add a new point
if (i > 0)
theNodes.+;
// get the new point
var node = theNodes[theNodes.length - 1];
// Set the new point's values
node.x = node.predX = node.succX = x;
node.y = node.predY = node.succY = y;
}