2d

I have a list of points that in pairs describe a polygon, like this: <0,0><0,1><0,1><1,0><1,0><1,1><1,1><0,0> which is a square. Note that each pair of points describes a line so our square is made up out of the lines <<0,0><0,1>><<0,1><1,0>><<1,0><1,1>><<1,1><0,0>> I do however have to draw these polygons which works fine when the points in question are all properly in order and there are no holes. Unfortunatly this sometimes goes wrong when the input is like <0,0><0,1><1,1><0,0><0,1><1,0><1,0><1,1> and the resulting polygon is weird or when there are several holes in the <0,0><0,2><0,2><2,0>

hi sorry but my maths and physics is too weak so i tried so many times but every time i failed i need your help to complete my app plz convert this circle to heart import android.graphics.Bitmap; public class Circle { float origRadius,deltaRadius,radius,origX,deltaX,x,origY,deltaY,y; int color,alpha,steps,currentStep; Bitmap bitmap; public Circle(float xCenter, float yCenter, float radius, int color, int steps) { this.x = xCenter; this.origX = xCenter; this.deltaX = (float) (40.0 * Math.random() - 20.0); this.y = yCenter; this.origY = yCenter; this.deltaY = (float) (40.0 * Math.random() - 20.0

I am trying to plot a two variable equation to a Cartesian plane. Here is my problem, on the code below if I comment out one for loop and let another run, the plot of the graph (the negative or positive sides of x) is correct, but if I run both for loops they seem to alter each other and the graph comes out wrong. I've tried every combination of for loops, looping frontward, backward, nothing seems to solve it. I commented out the where these loops are at the end of the class "public class DrawingComponent extends JComponent" where it says "// This two loops work fine if each one is run

Im making simple 2D game, I designed the "way" the player going through in the game. If the player touches the wall the game is over, so I must detect collisions. At first I created the walls from sprites, but then I realized there is no 2D collider that suit himself to the shape of the sprit(it was to difficult to create the collider manually from a lot of smaller polygon and circle colliders), so I made all the walls that builds the "way" 3D objects(.dae files with z=0.001), and added them the mash collider which suits himself to the 3D object. I changed my player to be 3D as well so the

How can I convert a 2D point (or 3D with Z=0) to 2D point(where Z is ignored) with a 4D matrix ? I am using Microsofts Silverlight to project a 2D control as pseudo 3D using a Matrix3D definition of Matrix3D I know the initial 2D coordinate of a point in the untransformed control and I want the 2D position of the point after the transform. The silverlight API is sparse regarding 3D methods. Please suggest basic math to perform the calculation. This is a follow on from a silverlight specific question Edit further details its not working. I am using x = x0 * matrix[0][0] + y0 * matrix[1][0] + z0

I'm using K-means clustering in color-based image segmentation. I have a 2D image which has 3 colors, black, white, and green. Here is the image, I want K-means to produce 3 clusters, one represents the green color region, the second one represents the white region, and the last one represents the black region. Here is the code I used, %Clustering color regions in an image. %Step 1: read the image using imread, and show it using imshow. img = (imread('img.jpg')); figure, imshow(img), title('X axis rock cut'); %figure is for creating a figure window. text(size(img,2),size(img,1)+15,...