# This is the end-user function to get a data frame of letters spaced It can be passed a grouping variable to get multiple # This simple helper function gets the necessary density paths from Letters <- unlist(strsplit(label, ""))ĭf <- get_path_points(path, x_start, x_end, letters) Label_to_path <- function(label, path, x_start = head(path$x, 1), # x, y positions and angles for a given string on a given path. # This function combines the other functions to get the appropriate Grad <- approx(x = path$length, y = path$gradient, xout = dist_points)$yĪngle <- approx(x = path$length, y = path$angle, xout = dist_points)$yĭata.frame(x = x, y = y, gradient = grad, Y <- approx(x = path$length, y = path$y, xout = dist_points)$y X <- approx(x = path$length, y = path$x, xout = dist_points)$y Letterwidths <- letterwidths/sum(strwidth(letters))ĭist_points <- c(start_dist, letterwidths * diff_dist + start_dist)ĭist_points <- (head(dist_points, -1) + tail(dist_points, -1))/2 Letterwidths <- cumsum(strwidth(letters)) Start_dist <- approx(x = path$x, y = path$length, xout = x_start)$yĮnd_dist <- approx(x = path$x, y = path$length, xout = x_end)$y Get_path_points <- function(path, x_start, x_end, letters) # x, y values and angles for letters placed along the path. # as the beginning and ending x co-ordinate, produces the appropriate # From a given path data frame as provided by get_path_data, as well Path_length <- cumsum(sqrt(diff(x)^2 + diff(multiplier * y / 1.5)^2))ĭata.frame(x = new_x, y = new_y, gradient = grad,Īngle = gradient_to_text_angle(grad, multiplier), Multiplier <- diff(range(x))/diff(range(y)) * dev.size() / dev.size() # y scales as well as the current plotting device's aspect ratio # calculate the multiplier needed to correct for differences in the x and # the path, and also the Euclidean distance along the path. # From a given set of x and y co-ordinates, determine the gradient along Gradient_to_text_angle <- function(grad, mult = 1) # when plotting, as well as the device's aspect ratio. # can take account of the different scale of x and y variables # angle a letter sitting on that line needs to be rotated by to # Converts a (delta y) / (delta x) gradient to the equivalent Add the foreground arc in orange, currently showing 12.7%.Ĭonst num = Math.ceil(8 * Math.random()) + 2 Ĭonst values = Array(num).fill(0).map(d => Math.random()) Add the background arc, from 0 to 100% (tau). This way, we don’t need to position arcs individually. Get the SVG container, and apply a transform such that the origin is the property to the `arc` function, and it will return the corresponding string. SVG path string for a given angle, we pass an object with an endAngle An arc function with all values bound except the endAngle. Htmltools::save_html(html = ff, file = "widgets.html") VisInteraction(navigationButtons = TRUE) %>% VisIgraphLayout(layout = "layout_in_circle") %>% Contact us for alternate licensing options. Also note that the UI icons provided (in source code as data URIs) are iChemLabs Proprietary and may only be used in projects using ChemDoodle Web Components. The complete license is provided in the COPYING.txt file of this download. The ChemDoodle Web Components library is licensed under version 3 of the GNU GENERAL PUBLIC LICENSE. This library also has complete access to the entire ChemDoodle desktop API through AJAX, allowing for quick access to one of the most robust chemical graphics and informatics packages in existence directly through Javascript. Beyond graphics, this tool provides a framework for user interaction to create dynamic applications through web browsers, desktop platforms and mobile devices such as the iPhone, iPad and Android devices. ChemDoodle Web Components allow the wielder to present publication quality 2D and 3D graphics and animations for chemical structures, reactions and spectra. The ChemDoodle Web Components library is a pure Javascript chemical graphics and cheminformatics library derived from the ChemDoodle® application and produced by iChemLabs.
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