This is no problem at all using C# and GDI+ Here is the short version: Create a Bitmap of the right size and resolution Measure the coordinates of the images and text you want to have on it Pull the data from your database Use Graphics.DrawImage and Graphics.DrawString to create the graphics Save in a … Read more
Note that AffineTransform transformations are concatenated “in the most commonly useful way”, which may be regarded as last in, first-out order. The effect can be seen in this example. Given the sequence below, the resulting Shape is first rotated, then scaled and finally translated. at.translate(SIZE/2, SIZE/2); at.scale(60, 60); at.rotate(Math.PI/4); return at.createTransformedShape(…);
I would remove the tick labels and replace the text with patches. Here is a brief example of performing this task: import matplotlib.pyplot as plt import matplotlib.patches as patches # define where to put symbols vertically TICKYPOS = -.6 fig = plt.figure() ax = fig.add_subplot(111) ax.plot(range(10)) # set ticks where your images will be ax.get_xaxis().set_ticks([2,4,6,8]) … Read more
One way to do it is using spines: import math import numpy as np import matplotlib.pyplot as plt def sigmoid(x): a = [] for item in x: a.append(1/(1+math.exp(-item))) return a x = np.arange(-10., 10., 0.2) sig = sigmoid(x) fig = plt.figure() ax = fig.add_subplot(1, 1, 1) # Move left y-axis and bottom x-axis to centre, … Read more
GL_POLYGON is only for convex polygons: GL_POLYGON: Draws a single, convex polygon. Vertices 1 through N define this polygon. For concave polygons you have at least two options: Triangulate the polygon and use GL_TRIANGLES. Use the stencil buffer trick.
Here is the Solution I have done with Pixels. Attaching the source code so one can try the exact and get the result. I have sample images of 128×128 (Width x Height). using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Drawing; using System.IO; //using System.Globalization; namespace colorchange { class Program { static void Main(string[] … Read more
Don’t use getGraphics(). Any painting you do will be temporary and will be lost the next time Swing determines a component needs to be repainted. Instead override the paintComponent() method of a JComponent or JPanel to do your custom painting. See Custom Painting for more details and examples.
You can use Canvas.drawArc, but you must compute the arguments it needs: Lets say that the center of the circle is (x0, y0) and that the arc contains your two points (x1, y1) and (x2, y2). Then the radius is: r=sqrt((x1-x0)(x1-x0) + (y1-y0)(y1-y0)). So: int r = (int)Math.sqrt((x1-x0)*(x1-x0) + (y1-y0)*(y1-y0)); int x = x0-r; int … Read more
public static bool LineIntersectsRect(Point p1, Point p2, Rectangle r) { return LineIntersectsLine(p1, p2, new Point(r.X, r.Y), new Point(r.X + r.Width, r.Y)) || LineIntersectsLine(p1, p2, new Point(r.X + r.Width, r.Y), new Point(r.X + r.Width, r.Y + r.Height)) || LineIntersectsLine(p1, p2, new Point(r.X + r.Width, r.Y + r.Height), new Point(r.X, r.Y + r.Height)) || LineIntersectsLine(p1, p2, new … Read more
You could add a subview to your UIImageView containing another image with the small filled triangle. Or you could draw inside of the first image: CGFloat width, height; UIImage *inputImage; // input image to be composited over new image as example // create a new bitmap image context at the device resolution (retina/non-retina) UIGraphicsBeginImageContextWithOptions(CGSizeMake(width, height), … Read more