Draws a curved line. The curve is controlled by a single point.
imageDrawQuadraticCurve(name, ctrlx1, ctrly1, x1, y1, x2, y2)
returns void
someImage.drawQuadraticCurve(ctrlx1, ctrly1, x1, y1, x2, y2)
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
| name | string | Yes | The image on which this operation is performed. | |
| x1 | numeric | Yes | The x coordinate of the start point of the quadratic curve segment. | |
| y1 | numeric | Yes | The y coordinate of the start point of the quadratic curve segment. | |
| ctrlx1 | string | Yes | The x coordinate of the first control point of the quadratic curve segment. | |
| ctrly1 | numeric | Yes | The y coordinate of the first control point of the quadratic curve segment. | |
| x2 | numeric | Yes | The x coordinate of the end point of the quadratic curve segment. | |
| y2 | numeric | Yes | The y coordinate of the end point of the quadratic curve segment. |
This example shows how to draw a curved line.OK
<!--- Use the imageNew function to create a 400x400-pixel image. --->
<cfset myImage=imageNew("",400,400)>
<!--- Turn on antialiasing to improve image quality. --->
<cfset imageSetAntialiasing(myImage,"on")>
<!--- Set the drawing color to green. --->
<cfset imageSetDrawingColor(myImage,"green")>
<!--- Draw a curved line on the image. --->
<cfset imageDrawQuadraticCurve(myImage,120,320,5,15,380,280)>
<!--- Display the image in a browser. --->
<cfimage source="#myImage#" action="writeToBrowser">
CF11+ Lucee4.5+ Create a new image. With the new image draw a cubic curve, starting at top left (0,0) ending at bottom right (152,152) with 1 control point at the bottom left (0,152)
imgObj = imageNew("",152,152,"rgb","149c82");
imgObj.drawQuadraticCurve(0,0,0,152,152,152);
cfimage (action="writeToBrowser", source=imgObj);