Pygame draw interactively
python,pygame,mouse,draw,interactive
You are filling white the entire screen every tick. So after you actually draw the screen become blank again on the next tick. Just move screen.fill(white) out of main cycle: import pygame windowSize = (500,500) white = (255,255,255) black = (0,0,0) pygame.init() screen = pygame.display.set_mode(windowSize) running = 1 screen.fill(white) while...
sqrt-based filled ellipse pixel drawing function
vb.net,lua,draw,pixels,ellipse
Here's what I came up with for my CPU renderer in the past. It's very efficient and very simple too. It relies on the mathematical definition of the ellipse, so the ellipse is drawn centered at x,y and has the width and height defined from the center, not from the...
Draw an ellipse sqrt-based function
Ok, I managed to find a solution for the filled ellipse by checking if the pixel from the second half is gonna be drawn in the x-range of the first half of the ellipse. function drawellipse(xc, yc, w, h, dofill) --trouble with the size, 1 pixel to large on x...
Draw a line every N words using iTextSharp
position,itextsharp,line,word,draw
Please take a look at the Every25Words examples. In that example, I read a text file into a String with the readFile() method. I then split the text into words based on the occurrence of spaces, and I add each word one by one: public void createPdf(String dest) throws IOException,...
pygame drawing a filled rectangle overwrite border, but only sometimes?
python,pygame,draw,rect,class-variables
Okay, I figured it out. The Rect argument in the draw function is relative to the position of the image. Since I had set its rect to its location on the screen, it was drawing the rectangle way offset from the corner. It worked on my first one only because...
How to draw a specific shape in CSS? [closed]
Try to break your shape up in smaller shapes. You could do something like this: Draw a square to serve as the main body for your shape Draw three triangles in different sizes to overlap the square in your background color. By hiding certain parts of your square you can...
Draw a fill rectangle dynamically on screen in C#
This is an example that works for me. The crucial parts are: using the Paint event and its Graphics adding a Clear(BackgroundColor) or else I get the same artifacts you see for transparency the TransparencyKey property should be used. There is a certain choice of colors: Common colors may conflict...
isssue in redo undo opration in my paintview android
android,drawing,android-canvas,draw
Try removing canvas.drawBitmap(canvasBitmap, 0, 0, canvasPaint); and replace with canvas.drawColor(canvasPaint); If that works then the additional paths you see are on this background bitmap. Second issue, create a new storage class: public class ColoredPath{ private int color; private Path path; //simple getters and setters here } Store like this: public...
Character walks slow in my C# game
Start with this: Player.Image = Image.FromFile("Rice-Boy-Walking-Down.gif"); (and the other load routines). On every tick? Seriously? Load them once during initialization, store them in variables, reuse the images. Ever played a computer game? They are not trashing your disc trying to load all graphics asset every frame. Disc access is slow....
My repaint in JFrame is not working
java,swing,draw,keylistener,repaint
The KeyListener shouldn't be working since a JComponent by default cannot get program focus, a necessary requirement for a KeyListener to work. One solution is to make it focusable via setFocusable(true) and then call requestFocusInWindow() on it. Better to use Key Bindings (tutorial link). Note that you should be overriding...
How to activate the method to draw from a button?
android,onclick,draw,activation
You call invalidate() on the view you want to redraw
how to draw a text on a circle in SWIFT
By using this library : https://github.com/javenisme/CurvaView var arctext : CoreTextArcView = CoreTextArcView(frame: CGRectMake(50, 50, 200, 200), font: UIFont.systemFontOfSize(15), text: "Hello this is radious arc with text", radius: 85, arcSize: 130.0, color: UIColor.redColor()) arctext.backgroundColor = UIColor.clearColor() self.view.addSubview(arctext) Remove arc for one file like as follows (set -fno-objc-arc to that library's .m...
Click is registered but not drawn in canvas android
android,performance,canvas,draw
Idea To solve this answer is taken from Android FingerPaint sample does not draw dot? My Code : private boolean mDrawPoint; @Override public boolean onTouchEvent(MotionEvent event) { int maskedAction = event.getActionMasked(); Log.d("onTouchEvent"); switch (maskedAction) { case MotionEvent.ACTION_DOWN: case MotionEvent.ACTION_POINTER_DOWN: { mDrawPoint = true; paths = new HashMap<Integer, Path>(); cor.setStrokeWidth(brushSize); for...
Java Graphics clear arc
java,graphics,draw,paintcomponent
Try it out: import java.awt.Graphics2D; import java.awt.geom.Area; import java.awt.geom.Ellipse2D; import java.awt.geom.RoundRectangle2D; // and other stuffes you should have already imported @Override public void paintComponent(Graphics g) { super.paintComponent(g); Area area = new Area( new RoundRectangle2D.Double(0, 0, 200, 200, 50, 50)); area.subtract(new Area(new Ellipse2D.Double(75, 50, 50, 50))); g.setColor(Color.RED); ((Graphics2D) g).fill(area); } Link...
drawing gradient over rectangle in swift
You need to specify a clipping path right before drawing the gradient. In your case, create a rectangle path and call CGContextClip(context) CGContextAddRect(context, CGRect(...)) CGContextClip(context) CGContextDrawLinearGradient(context, gradient, startPoint, endPoint, 0) The gradient will be clipped to the rectangle....
How can i separete the letter in string when drawing
You can draw each character seperately. By retrieving the FontMetrics currently used by the Graphics object, you can measure the width of each character, so you can advance using this width and a given seperation. public static void drawString(Graphics g, String string, int x, int y, int seperation) { FontMetrics...
Draw Circle onTouch on a Canvas Image Bitmap
android,touch,android-canvas,draw,android-bitmap
You have to extend ImageView and override onTouchEvent() and onDraw() methods. public class MyImageView extends ImageView { private float lastX; private float lastY; ... public MyImageView(Context context) { super(context); } public MyImageView(Context context, AttributeSet attrs) { super(context, attrs); } public MyImageView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle);...
Add white rectangle above a screenshot in a Graphics object (java) [duplicate]
Here's the rough idea: BufferedImage image = ImageIO.read(file); int whiteSpaceHeight = 20; BufferedImage result = new BufferedImage(image.getWidth(), image.getHeight()+whiteSpaceHeight, image.getType()); Graphics graphics = result.getGraphics(); graphics.drawImage(image, 0, whiteSpaceHeight, null); graphics.drawString(textToAdd, 0, whiteSpaceHeight/2); ...
Pygame.draw.arc() completion bug or just me?
Solved thanks to /u/Mekire in this reddit post import pygame from pygame import gfxdraw RED = pygame.Color("red") WHITE = pygame.Color("white") def draw_arc(surface, center, radius, start_angle, stop_angle, color): x,y = center start_angle = int(start_angle%360) stop_angle = int(stop_angle%360) if start_angle == stop_angle: gfxdraw.circle(surface, x, y, radius, color) else: gfxdraw.arc(surface, x, y, radius,...
DirectX cuts Vertex and only draws last call
I got it fixed, here for others: Vertices getting cut: my near/far plane were to near to eachother. (they were 0.1f and 100.0f) Changed both values and now they work. DirectX only drawing last call: Had to apply material again for each model. So doing // Set coresponding input layout...
How to get all the coordinate points (X and Y) in ios
The system sends touch events at a certain interval. If you move slow you get more, but going fast you get less of them. You can't get more if you move fast. But you also don't need more probably. You just have to draw the line between points, no matter...
As3: Draw overlapping rectangles to a sprite and apply alpha
actionscript-3,graphics,sprite,draw
I suspect that the graphics object does not support this kind of functionality for parts of its data. If both boxes are individual DisplayObjects, you can set the .blendMode of the DisplayObjectContainer to BlendMode.LAYER, which gives the desired result. Here's some example code that refactors the drawing of a rectangle...
Android Canvas drawLine not drawing on MainActivity
java,android,android-activity,canvas,draw
you can display the bitmap like that: canvas.drawBitmap(bmp, positionX, positionY, paint); in your case you can try somthing like this: canvas.drawBitmap(bitmap, 0, 0, null); but you need to use a diffrent canvas for it. The canvas wich let you draw stuff on your screen will be passed to your onDraw()...
Canvas draw text verticaly
java,android,text,android-canvas,draw
First, you need Paint Paint paint = new Paint(); // your paint settings such as stroke thickness and such Then, rotate your canvas canvas.rotate(yourTextAngle, originX, originY); Then, you draw your text canvas.drawText("Your text", originX, originY, paint); The text should be drawn vertically based on the angle you supplied. Then if...
Drawing a cone surface in general equation in Matlab [duplicate]
In case somebody else was looking for this: my question was duplicate of http://stackoverflow.com/a/15100406/3179989...
Leaflet-draw : Create editable layers
angularjs,draw,leaflet,geojson,angular-leaflet-directive
I modified your code and it seems that I have fixed the bugs for you. Here is my code. <!DOCTYPE html> <html ng-app="demoapp"> <head> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <script src="http://tombatossals.github.io/angular-leaflet-directive/bower_components/angular/angular.min.js"></script> <script src="http://tombatossals.github.io/angular-leaflet-directive/bower_components/leaflet/dist/leaflet.js"></script> <script...
Draw Image At Cursor Position Visual Basic
vb.net,draw,paint,cursor-position
Use the MouseDown() event of the Form and draw at the location specified by "e.X" and "e.Y". You can use the Timer() control to get a one second delay. Here's a quick example: Public Class Form1 Private WithEvents Tmr As New System.Windows.Forms.Timer Private Sub Form1_Load(sender As Object, e As EventArgs)...
Arc or circle not perfectly round after drawing on screen
seems that arc drawing routine is somewhat broken, run my code and wait till angle is < 270 degs or less: class V extends View implements Runnable { private Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); private RectF mRect = new RectF(); private float mStartAngle; private float mAngle; private Xfermode mClearMmode =...
Draw triangle by the intersect of 3 circles
Finding the intersection points which are on the circumference of all three circles Here's how to do it: Define 3 circles: var A={x:0,y:0,r:200,color:"rgba(52, 152, 219,0.5)"}; var B={x:0,y:400,r:250,color:"rgba(46, 204, 113,0.5)"}; var C={x:300,y:200,r:280,color:"rgba(241, 196, 15,0.5)"}; Calculate the intersection points of the 3 circles vs each other (AB,BC,CA): var intersections=[]; var AB=circleIntersections(A,B); //...
How can I optimize this bottleneck Draw call?
c#,optimization,xna,draw,xna-4.0
You could always render each building to a texture and cache it while it's on screen. That way you only draw the windows once for each building. you will draw the entire building in one call after it's been cached, saving you from building it piece by piece every frame....
QRubberBand, how to draw on it
It is not drawing on rubber band but it does what you need : void MyButton::mouseMoveEvent(QMouseEvent *event) { rubberBand->setGeometry(QRect(mypoint, event->pos()).normalized());//Area Bounding QToolTip::showText( event->globalPos(), QString("%1,%2") .arg(rubberBand->size().width()) .arg(rubberBand->size().height()),this ); } QToolTip is shown near the cursor. It dynamically changes and shows actual information about size of rubber band. Result (black area is...
Drawing on a panel but when adding it through another frame, nothing draws
java,user-interface,panel,draw
There are 2 separate issues here. (1) Simplest answer is - you need to call 'getGraphics' from within your action method. Not from the constructor. E.g. public void jButton1ActionPerformed(java.awt.event.ActionEvent evt) { Graphics2D doo = (Graphics2D) jPanel2.getGraphics(); ... doo.setFont(...); doo.drawString(...); } (2) This would yield visible drawings, but they'll disappear whenever...
Draw text on screen
So, I am using this solution now. Thanks to InkGolem for the small hint. This code writes the string "textOnScreen" to the position x=75 and y=35 with yellow colour. UILabel *uiLabel = [[UILabel alloc] initWithFrame:CGRectMake(10, 10, 20, 15)]; uiLabel.text = @"textOnScreen"; uiLabel.frame=CGRectMake(75, 35, 160, 20); uiLabel.font=[UIFont boldSystemFontOfSize:25.0]; uiLabel.textColor=[UIColor yellowColor]; uiLabel.backgroundColor=[UIColor...
Libgdx shader, render and draw confusion
opengl,libgdx,shader,render,draw
The problem here is, that you never set the Shader back to the default Shader, so your Spritebatch always uses the "solid white" Shader. As the javadock of the setShader(ShaderProgram shader)sais you can reset the Shader by calling setShader(null). Another possibility would be to use another Texture for the solid...
c draw function not drawing properly
Typecast problem. M results in 0 when dy/dx is below one. Typecast them to floats to get a float as a result.
canvas rectangles get drawn then disappear javascript
It looks like your rects are being drawn and then the image (which loads asynchronously) is eventually loaded and then drawn on top of the rects--making them disappear. Put the if(theSection.allHotSpots.length > 0 inside the onload so the image doesn't later clobber the rects....
Drawing a triangle with rounded bottom in CSS?
So we create a circle and place it on top to make it look like how you want it, you get something like this: CSS: .triangle{ width: 0px; height: 0px; border-style: solid; border-width: 0 200px 200px 0; border-color: transparent #48a665 transparent transparent; } .triangle:after { content: ""; display: block; width:...
How to set timer in View class?
android,multithreading,timer,draw
But it is showing this exception IllegalThreadStateException. It caused by non-runnable or non-threading class. A class that extends View has not thread on it, so that you get IllegalThreadStateException. Is there any other way to implement timer in this screen? Java provided a Timer class to be used for...
Draw color to every pixel in picturebox
Each time your timer ticks you want to draw another pixel with (different?) color, right? What you need to do is declare current x and y coordinates outside of timer1_Tick method and increase their values accordingly every time you draw something. To immediately see the results you should also call...
libgdx won't draw sprite or animation
Your keyframes are kept in an array called bullets, but when you call the Animation constructor you pass something called 'aims' as the second argument. You should try instead passing 'bullets', as in: bulletAnimation = new Animation(0.06f,bullets); You shouldn't have a problem with using a Sprite[] as the Sprite class...
How to draw the spectrogram from data the stft?
The Java SE libraries do not cover this sort of thing. You need to: identify a 3rd-party Java library that provides scientific graphing, identify a non-Java application that you can run to generate an image that you can embed in your Java app's output; e.g. run it using Runtime.exec(...), or...
libGDX draw a text using a decals to 3d facing camera
I wouldn't try the Decal method because it's not set up for text. SpriteBatch is already set up for text. (The Decal method could theoretically perform better because you wouldn't need a separate draw call for each string of text. However, you would have to roll your own version of...
Does the draw order affects objects position in depth? (images included)
I have cloned the repository you have linked to see if the issue was located somewhere else. In your most recent version the Object3D::draw function looks like this: glBindVertexArray(this->vaoID); glUseProgram(shader.getProgramID()); glUniformMatrix4fv(this->currentshader.getUniformID_Model(), 1, GL_TRUE, this->currentMatrix.getMatrix()); // PPmat é matriz identidade glDrawElements(GL_TRIANGLES, 40, GL_UNSIGNED_INT, (GLvoid*)0); glBindVertexArray(0); glUseProgram(0); glClear( GL_DEPTH_BUFFER_BIT); <<< clears the...
getGraphics from panel returns null
java,swing,graphics,nullpointerexception,draw
You are using the Graphics object wrong. Instead of calling write from wherever you call it, instead override paintComponent. You could do something like: private int xx; private int yy; private Color c; @Override protected void paintComponent(Graphics g) { super.paintComponent(g); if(c != null) { int width=panel.getWidth()/x; int height=panel.getHeight()/y; g.setColor(c); g.drawRect(xx*width,...
How to draw in the screen AndroidStudio? [closed]
here is a code that could help you. import android.content.Context; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.media.MediaPlayer; import android.support.v7.app.ActionBarActivity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.view.MotionEvent; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.View; import android.widget.Button; public class rodando extends ActionBarActivity...
C# Draw multiple Lines
I would make a Line class having start and end point of the line in struct Point and make list of that class instead of having four arrays. public class MyLine { public Point StartPoint {get; set;} public Point EndPoint {get; set;} public void DrawLine() { //Draw line code goes...
Processing: Trying to animate the drawing of lines without draw function
java,animation,twitter,processing,draw
Processing uses double buffering, which means that when you draw "to the screen", you're actually drawing to an off-screen buffer. Since your code is not in the draw() function, this happens before the frame is even visible. Then when the frame becomes visible, it takes the entire off-screen buffer, and...
Drawing a simple image in R
Here is the way to print in an image file: #set up png png(filename = "ACE.png", width = 5, height = 15, units = "cm", pointsize = 12, res = 300) par(bg = "transparent", usr = c(0, 51, 0, 451)) #make the plot window a certain size? plot(x=NULL, y=NULL ,...
draw-function with fold and and add-line?
You don't say specifically which language you are using, but this looks suspicious: (fold empty-image (add-line ...)) In Racket the way to use fold is: (foldl f base l) Here f is a function. In your code you have empty-image. You need to define define a function say f, that...
Understanding void draw() in processing
Most Processing sketches use a call to the background() function as the first line in the draw() function. This clears out anything drawn in previous frames. However, you want to keep the stuff drawn in previous frames, so you don't want to clear them out. The problem with this is...
Rebin data and update imshow plot
python,numpy,matplotlib,draw,imshow
You seem to be missing the limits on the y value in the histogram redraw in update_data. The high index and low index are also the wrong way around. The following looks more promising, Z, xedges, yedges = np.histogram2d(x[high_index:low_index],y[high_index:low_index], bins=150) (although I'm not sure it's exactly what you want) EDIT:...
How to draw a animated line appearing in canvas html5?
javascript,jquery,animation,html5-canvas,draw
var canvas = $("#paper")[0]; var c = canvas.getContext("2d"); var startX = 10; var startY = 10; var endX = 500; var endY = 10; var amount = 0; setInterval(function() { amount += 0.05; // change to alter duration if (amount > 1) amount = 1; c.clearRect(0, 0, canvas.width, canvas.height);...
Delphi: Can't Draw On Panel's Canvas
Looking at your whole class I asume you desire to controll which image is being shown at which time based on certain condition. Right? If that is the case first thing that you need is for your class to have a field for storing the image data. In your example...
Arc doesn't shows on wpf canvas?
You have to set Canvas.Left and Canvas.Top on the Ellipse, not on the Canvas. in cnv_MouseLeftButtonDown change Canvas.SetTop(cnv, p.Y); Canvas.SetLeft(cnv, p.X); to Canvas.SetTop(ellipse, p.Y); Canvas.SetLeft(ellipse, p.X); Another bug is cnv_MouseMove, where the expression ellipse.Width = p.X - Canvas.GetLeft(ellipse); tries to assign a negative width to the Ellipse when the mouse...
android draw rectangle with dimensions and modify them in runtime
android,runtime,draw,dimensions
I just know about the existence of the class enum, which solves the problem of design that I had. It's a much easier way of carrying it out. According to the example that I wrote in the wording of the question, this is the code using the class enum: static...
How to move axes to center of chart in Maxima draw
Right. You'll use something like the following, with symmetric ranges for x and y. load(draw)$ draw2d( user_preamble="set zeroaxis linetype 5; set xtics axis; set ytics axis; set border 0;", explicit(sin(x),x,-%pi, %pi))$ ...
Javascript drawing board with columns of alternating colors using ctx
You should divide your x value by the increment (10) and check its modulo 2 : function draw() { var canvas = document.getElementById('canvas'); var ctx = canvas.getContext('2d'); for (var y = 0; y < 100; y += 10) { for (var x = 0; x < 100; x += 10)...
How to draw custom rectangles in java
java,draw,drawrectangle,path-2d
The key is you want to visualize how the code is drawing the object. The original code starts at the top left corner and draws in a clockwise direction. First, you need to move your start point, this will be much easier if you start on a corner, not a...
Cant Override UIView.Draw Method
The problem is that you create a program with the Unified API (see "using CoreImage" at the top). In Unified API, we no longer use PointF, SizeF or RectangleF, as those are 32-bit structures, so they do not work on 32/64 bit modes. In Unified, you need to use "CGRect"...
How to draw the trajectory ( tracking path ) of an moving object in an image - Opencv?
cv::Mat imageToDraw; //this is your image to draw, don't forget to load it std::vector<cv::Point> pointsInLast20Frames; //fill this vector with points, they should be ordered cv::Scalar color(0, 0, 255); //red for(int i = 0; i < pointsInLast20Frames.size() - 1; ++i) { cv::line(imageToDraw, pointsInLast20Frames[i], pointsInLast20Frames[i+1], color); } ...
Draw circle from main Activity or change view
java,android,view,android-activity,draw
To draw a circle using paint , you need to create a custom view like this private class CircleView extends View{ Paint paint = new Paint(); public CircleView(Context context) { super(context); } @Override public void onDraw(Canvas canvas) { paint.setColor(Color.GREEN); // set your own position and radius canvas.drawCircle(100,200,100,paint); } } And,...
Class is not abstract and does not override abstract method
java,inheritance,abstract-class,draw
Both classes Rectangle and Ellipse need to override both of the abstract methods. To work around this, you have 3 options: Add the two methods Make each class that extends Shape abstract Have a single method that does the function of the classes that will extend Shape, and override that...
Create Custom UIVview, circle with two color
Subclass UIView and implement the drawRect: method. Here is code to draw a circle to get you started: - (void)drawRect:(CGRect)rect { CGContextRef ctx = UIGraphicsGetCurrentContext(); CGContextAddEllipseInRect(ctx, rect); CGContextSetFillColor(ctx, CGColorGetComponents([[UIColor blueColor] CGColor])); CGContextFillPath(ctx); } also, take a look at how to draw part of a circle...
g.FillRectangle only working one time
You need to change the position of the second rectangle so it starts in the same position as the first: //tab is selected System.Drawing.SolidBrush lightBlue = new System.Drawing.SolidBrush(System.Drawing.Color.FromArgb(239, 242, 247)); g.FillRectangle(lightBlue, tabRectangle); // I can't get this working.. System.Drawing.SolidBrush sele = new System.Drawing.SolidBrush(System.Drawing.Color.FromArgb(65, 95, 155)); g.FillRectangle(sele, new System.Drawing.Rectangle( tabRectangle.X,tabRectangle.Y, 5,...
How can I center Graphics.drawString() in Java?
java,text,draw,centering,graphics2d
I used the answer on this question. The code I used looks something like this: /** * Draw a String centered in the middle of a Rectangle. * * @param g The Graphics instance. * @param text The String to draw. * @param rect The Rectangle to center the text...
Styling Android Spinner
I found a solution what I want to do as below. <Spinner android:id="@+id/genderBox" android:layout_width="match_parent" android:layout_height="30dp" android:background="@drawable/my_spinner" /> and make a xml file in drawable folder and paste following code <?xml version="1.0" encoding="utf-8"?> <layer-list xmlns:android="http://schemas.android.com/apk/res/android" > <item> <shape> <solid android:color="@android:color/white" /> <stroke android:width="1dp" android:color="#d2d2d2" /> <padding...
BufferedImage Sometimes Doesn't render
java,swing,awt,draw,bufferedimage
I had to modify most of the code to get something to work. I'm assuming that this is what you want. Here are the changes I made. I added a main method that called SwingUtilities invokeLater to put the Swing components on the Event Dispatch thread. I split the code...
HTML CANVAS not working
The code seems ok to me. I added a call to the init function. As LJ_1102 stated: The offset issue is a CSS issue. The width and height attributes set the width and height of the bitmap itself. The CSS width and height attributes set the element width and height....
How to correctly position a “X” in a rectangle?
It seems like the issue is where you are using your MidpointRounding.AwayFromZero It seems to me that if the sum you have to calculate the position you want to draw the 'X' gives the result 6.6, you want to have it in position 6, not position 7, so realistically you...
Draw a circle in a Canvas using changing-variable(animation)
java,android,variables,canvas,draw
private float width = getWindowManager().getDefaultDisplay().getWidth() height = getWindowManager().getDefaultDisplay().getHeight(); //Ns permet de savoir la resolution instead of this: float width = this.getWidth() height = this.getHeight();//Ns permet de savoir la resolution ...
How to fill in area with certain color
As Kenogu Labz mentions in another answer, your problem is that the your Color match is exact but the colors around the edges of the image are antialiased or being degraded by the source image codec (a common problem with lossy image compression systems such as JPEG). Instead of performing...
Customize a ProgressBar to become a Thermometer
android,drawing,draw,android-custom-view,android-progressbar
First I would provide 2 setters, one for color and one for the temperature value, normalized from 0 ... 1, where 0 means no visible bar, and 1 means a fully visible bar. public void setColor(int color) { mColor = color; invalidate(); // important, this triggers onDraw } public void...
Drawing in a Gtk.DrawingArea
gtk,draw,pygobject,drawingarea
Adding DrawingAreas to a Grid is a bit problematic if hexpand and vexpand are not set. Additionally adding width_request and height_request is needed (or some other layout organization which forces the DrawingArea to have a size), otherwise the initial window size will be tiny or not visible. The following shows...
Clearing Graphics from a Window in Python
python,text,graphics,window,draw
EDIT: Apparantly, you're using Calico graphics, which is built on IronPython not Cython and does not have access to the tkinter bindings. The underlying implementation is Gtk, not tkinter, and that's the place to look if you're trying to extend the functionality (though it looks perfectly sufficient as is). The...
What to use for drawing in Android - View or SurfaceView?
android,view,android-canvas,draw,surfaceview
If you want to use Canvas, you are increasingly better off with a custom View, rather than a SurfaceView. The simple reason is that Canvas rendering on a View can be hardware accelerated, while Canvas rendering on a SurfaceView's surface is always done in software (still true as of Android...
Javascript bmi calculator pointer position
Seeing how I myself am very new to javascript and I'm not really sure how you image is constructed (if it's all a big box or several lesser boxes), I'll just give you my point of view. Assuming you have four seperate boxes and we take the green one as...
Java unwanted border on JPanel when drawing
You need to call setResizeable(false) on your frame before you call pack(). Calling pack() will size the frame to fit its components. Making the frame non-resizeable afterwards will give it thinner borders, which will increase the amount of space inside the frame.
How to use a SurfaceView from an Adapter (Android)
android,draw,surfaceview,android-adapter,baseadapter
Overriding draw() probably isn't what you want. If you want to draw on the View, override onDraw(). If you want to draw on the Surface, that's usually done from a separate thread. (The SurfaceView has two parts; the surface part is a completely separate layer that is drawn behind the...
Drawing with timer is not working
Never start a Timer inside of paintComponent. This method is for drawing and drawing only and nothing, I mean absolutely nothing else. You should start your Timer elsewhere, perhaps in the class's constructor, and have it change fields of your class, and then call repaint(). The paintComponent method should then...
AndroidScript - DrawArc equivalent?
javascript,android,android-canvas,draw,android-scripting
Here is a good answer posted by Schnee Wittchen on another forum:- You may use the DrawArc method of the image object. I found it a little bit tricky as it behaves different to the normal explanation, but anyway it is usable. Syntax: img.DrawArc( x1, y1, x2, y2 ,startangle, sweepangle...
How can I create a Line with different colors in android
android,colors,android-studio,draw
Use GradientDrawable. GradientDrawable rainbow = new GradientDrawable(Orientation.LEFT_RIGHT, new int[] {Color.RED, Color.MAGENTA, Color.BLUE, Color.CYAN, Color.GREEN, Color.YELLOW, Color.RED}); The docs tell you how to set shape, interpolation between colors, position of colors, etc....
c# Draw Textbox onclick
You should examine OnClick event on your Form or Panel. Then you should get x and y parameters and, finally, use method panel1.Controls.Add(yourTextBox); But seriously, this is googleable question, so, please, avoid asking such on StackOverflow.
Erase or delete a line drawn on a TImage Canvas
If you do not have areas filled with color, you can do all drawing with Pen.Mode set to pmXOR. It will give some odd points where lines cross (for example where the red line crosses the blue circle), but when you re-draw the red line - it will disappear. Just...
Libgdx blending contrast issue in render();
libgdx,rendering,draw,alphablending
The blend function you're using for the spotlight takes the current pixel brightness and multiplies it by (1+alpha). So if you darken to 0.7 of brightness (using a darkener alpha of 0.3), you want the spotlight to multiply the brightness by 1/0.7 = 1.429 so you should use a spotlight...
Can't draw a triangle with OpenGL ES 2.0 on android
java,android,opengl-es,geometry,draw
Clear the background before drawing the triangle ;) public void onDrawFrame(GL10 unused) { // Redraw background color GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT); mTriangle.draw(); } ...
How do I draw things differently depending on the case in XNA?
It sounds like your last example/choice is spot on. It even has a name, the Strategy pattern. In the class based version of this pattern, you would normally just pass in a new object every time (as in your example) but because this is in the Draw method, I would...
How to draw a rectangle around multiline text
It sounds as if you are missing only a single piece of the puzzle to meet your requirement. That piece is called getYLine(). Please take a look at the DrawRectangleAroundText example. This example draws the same paragraph twice. The first time, it adds a rectangle that probably looks like the...
Use a progressbar inside a custom view?
android,progress-bar,draw,android-custom-view
You may want to consider extending ViewGroup in your Gamecontroller_View instead of View. From the documentation: A ViewGroup is a special view that can contain other views (called children.) The view group is the base class for layouts and views containers. ...