I'm working on a project that involves drawing curved paths between two objects. Currently, I've been writing some test code to play around with bezier curves and animation. The first test is simply to move the endpoint (Point3) from the origin object (a rectangle) to the destination object (another rectangle), in a straight line. her...
I have a sequential collection of points in X,Y and I'd like to "trace" these into a set of bezier curves. Could any open source bitmap to vector tracing algorithm or library be used for this? ...
I need to create a spline with two endpoints and 'n' control points. As far as I am aware, a Bezier curve allows for only one control point, and a Bezier spline allows for two control points. However, I need to be able to add as many control points as I see fit, not limited to one or two. Here is an example of what I want to achieve, wi...
Hi Guys, I needed to find and use the coordinates of the intersection of a cubic Bezier and a straight line. The trouble is that I cannot find a non-parametric representation of a Bezier curve which I need for solving with the line. I do not want to resort to a Newton-Raphson equivalent on the Bezier parametric equation (which can be f...
Hi all I am trying to make a 'brush' tool in AS3 (pure, not Flex) which simulates handwriting, making strokes to be smooth instead of cornered. Then, the trace must be reduced to cubic bezier curves which can be dragged and deformed, affecting the previously drawn path (like the illustrator's pen tool). I'm tracking the mouse movement ...
Hi, I'm trying to define a path of points. Each point has an x, y, and time. I then want to query this path and get the current position at that point in time. Let me share some pseudo code. point {x, y, time} function initialisePath(point[] path) { ... // Create Bezier Path } function getXYAtTime(time) { return ... // Ge...
I have the following PathPoints and PathTypes arrays (format: X, Y, Type): -177.477900, 11021.670000, 1 -614.447200, 11091.820000, 3 -1039.798000, 10842.280000, 3 -1191.761000, 10426.620000, 3 -1591.569000, 10493.590000, 3 -1969.963000, 10223.770000, 3 -2036.929000, 9823.960000, 3 -2055.820000, 9711.180000, 3 -2048.098000, 9595.5460...
I have 2 points in X,Y + Rotation and I need to calculate a bezier spline (a collection of quadratic beziers) that connects these 2 points smoothly. (see pic) The point represents a unit in a game which can only rotate slowly. So to get from point A to B, it has to take a long path. The attached picture shows quite an exaggeratedly curv...
I have a Cubic Bézier curve. But I have a problem when I need only one point. I have only value from the X-axis and want to find a value that coresponds to Y-axis to that point. Or find the t step, from it I can easely calculate the Y-axis. Any clue how to do it? Or is there any formula to do this? ...
Having searched the web, I see various people in various forums alluding to approximating a cubic curve with a quadratic one. But I can't find the formula. What I want is this: input: startX, startY, control1X, control1Y, control2X, control2Y, endX, endY output: startX, startY, controlX, controlY, endX, endY Actually, since the starti...
HI all - I am using anchor points and control points to create a shape using curveTo. It's all working fine, but I cannot figure out how to get my lines to go through the center of the control points (blue dots) when the line is not straight. Here is my code for drawing the shape: // clear old line and draw new / begin fil...
how can i construct the bezier curve if i only have points in x axis?can i do this act or need points for x and y axes related to t parameter? i want constructe a bezier curve(from degree N)in a given interval and known point in that interval(that are random), but i have points only in x axes!!Whether this is feasible? ...
I've created a "blob" shape by patching cubic Bezier curves together (screenshot below). I'd like to be able to detect the situation where a curve has crossed over either itself or another curve and was wondering if there's a recommended approach or known algorithm for doing this? One idea I had was to use a FlatteningPathIterator to d...
Someone somewhere has had to solve this problem. I can find many a great website explaining this problem and how to solve it. While I'm sure they are well written and make sense to math whizzes, that isn't me. And while I might understand in a vague sort of way, I do not understand how to turn that math into a function that I can use....
In my WPF application I'm working on a drawing mechanism to make annotations on top of images. For now I have functionality to draw paths where my drawn path will consist of the collected points from the drawing. More closely I'm adding StylusPoints to an InkPresenter as I collect them through the MouseMoved event. The InkPresenter is se...
What's the Matlab way to draw a Bezier curve ? Do you have to prgoram it yourself ? I am not looking for a user made routine, but am asking if Matlab offers a standard way to draw them. ...
Hi, I've been struggling looking for an understandable way to do this. I have four points, a StartPt, EndPoint, and Intersection points to represent the peak and valley in the bezier. The BezierSegment in C# requires start, controlPoint 1, controlPoint 2, endpoint - however I don't have any control points I only have these two points t...
You will understand what I mean if you use graphic editing programs like Gimp or Photoshop. To edit a curve on those programs (which probably is Bezier Curve), we can click on the curve, drag the mouse and the curve is changed accordingly. I suspect all the things behind this mechanism are concerned with vectors, but I couldn't find any ...
Hi Guys, This is Similar to a previous question I asked about the Cubic Bezier. I've got a start point, an endpoint, and a point that is meant to lie along a Quadratic Bezier. Given these three points I want to be able to draw a QuadraticBezierSegment in WPF, but I need the single ControlPoint value (in the QuadraticBezierSegment it's...
Hi everyone. My question is, is there any Bezier Clipping java source code available on the Internet? I have seen some java applet used that method, but unfortunately they didn't provide code, and I really in short of time to implement it my own....Thank you so much. ...