curve

Currently, I'm attempting to make multiple beziers have equidistant points. I'm currently using cubic interpolation to find the points, but because the way beziers work some areas are more dense than others and proving gross for texture mapping because of the variable distance. Is there a way to find points on a bezier by distance rather than by percentage? Furthermore, is it possible to extend this to multiple connected curves? distance between P_0 and P_3 (in cubic form), yes, but I think you knew that, is straight forward. Distance on a curve is just arc length: fig 1 http://www.codecogs

I have the following data in my thesis: 28 45 91 14 102 11 393 5 4492 1.77 I need to fit a curve into this. If I plot it, then this is what I get. I think some kind of exponential curve should fit this data. I am using GNUplot. Can someone tell me what kind of curve will fit this and what initial parameters I can use? Ben Just in case R is an option, here's a sketch of two methods you might use. First method: evaluate the goodness of fit of a set of candidate models This is probably the best way as it takes advantage of what you might already know or expect about the relationship between the

Please see the image below. I want to add an arrow to the top right of a div which I am treating as editable input box. Please help me how I can achieve this using CSS. I cannot use a SVG since I need this as a div to show emoticons as images over it. <div placeholder="Your message" id="Message"> ... </div> You can do it like in the below snippet. The method used to achieve the shape is as given below: The main div element only has a top, bottom and left border. The right border is nullified because the element and its arrows needs to be transparent. With a transparent arrow, if a right border

I want to create an animation with css that simulate a wave movement. I need to change a line-or div- to a curve for this... The CSS rules that I'm familiar to, make the entire div to semicircular or change element border. For example: border-radius , or perspective or border-top-radius ... This image show you what I want: Do you have experience about this? or is it possible? Thanks in Advance... Elad Shechter You could use an asymmetrical border to make curves with CSS. border-radius: 50%/100px 100px 0 0; VIEW DEMO .box { width: 500px; height: 100px; border: solid 5px #000; border-color: #000

i want to create a rainbow circle like the picture below: but how can i draw the curved and multiple color stop gradient? here's my current code: <svg width="500" height="500" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <defs> <linearGradient id="test"> <stop offset="0%" stop-color="#f00"/> <stop offset="100%" stop-color="#0ff"/> </linearGradient> </defs> <circle cx="50" cy="50" r="40" fill="none" stroke="url(#test)" stroke-width="6"/> </svg> This approach won't work. SVG doesn't have conical gradients. To simulate the effect, you would have to fake it with a

I'm trying to draw a curve in canvas with a linear gradient stoke style along the curve, as in this image . On that page there is a linked svg file that gives instructions on how to accomplish the effect in svg. Maybe a similar method would be possible in canvas? A Demo: http://jsfiddle.net/m1erickson/4fX5D/ It's fairly easy to create a gradient that changes along the path : It's more difficult to create a gradient that changes across the path : To create a gradient across the path you draw many gradient lines tangent to the path: If you draw enough tangent lines then the eye sees the curve as

I've been trying to superimpose a normal curve over my histogram with ggplot 2. My formula: data <- read.csv (path...) ggplot(data, aes(V2)) + geom_histogram(alpha=0.3, fill='white', colour='black', binwidth=.04) I tried several things: + stat_function(fun=dnorm) ....didn't change anything + stat_density(geom = "line", colour = "red") ...gave me a straight red line on the x-axis. + geom_density() doesn't work for me because I want to keep my frequency values on the y-axis, and want no density values. Any suggestions? Thanks in advance for any tips! Solution found! +geom_density(aes(y=0.045*.

I have three points in 2D and I want to draw a quadratic Bézier curve passing through them. How do I calculate the middle control point ( x1 and y1 as in quadTo)? I know linear algebra from college but need some simple help on this. How can I calculate the middle control point so that the curve passes through it as well? Let P0, P1, P2 be the control points, and Pc be your fixed point you want the curve to pass through. Then the Bezier curve is defined by P(t) = P0*t^2 + P1*2*t*(1-t) + P2*(1-t)^2 ...where t goes from zero to 1. There are an infinite number of answers to your question, since it