translate-animation

问题 Given a 3 x 3 rotation matrix,R, and a 3 x 1 translation matrix,T, I am wondering how to multiply the T and R matrices to an image? Lets say the Iplimage img is 640 x 480. What I want to do is R*(T*img) . I was thinking of using cvGemm, but that didn't work. 回答1: The function you are searching for is probably warpPerspective() : this is a use case... // Projection 2D -> 3D matrix Mat A1 = (Mat_<double>(4,3) << 1, 0, -w/2, 0, 1, -h/2, 0, 0, 0, 0, 0, 1); // Rotation matrices around the X axis

问题 I have an infinite translate animation applied to an ImageView : Animation animation = new TranslateAnimation(0, 0, -500, 500); animation.setDuration(4000); animation.setFillAfter(false); myimage.startAnimation(animation); animation.setRepeatCount(Animation.INFINITE); What I have noticed is that the translation process is slower when the image is near the starting and ending point compared to when its near half the distance (middle point). I guess the velocity for translate animations on

问题 I want to move some view from any position to center of screen and scale in parallel. If that's too complicated, translate and scale sequentially is also acceptable. But neither I could achieve. I think it's the problem with the pivot point. But sorry I found no solution. Please help. Maybe it's easy to those who develop games, about which I did nothing. Below is my code: private void moveViewToScreenCenter( final View view ){ DisplayMetrics dm = new DisplayMetrics(); getWindowManager()

问题 A number of blogs have expressed the performance gain in 'tricking' the GPU to think that an element is 3D by using transform: translateZ(0) to speed up animations and transitions. I was wondering if there are implications to using this transform in the following manner: * { -webkit-transform: translateZ(0); -moz-transform: translateZ(0); -ms-transform: translateZ(0); -o-transform: translateZ(0); transform: translateZ(0); } 回答1: CSS transformations create a new stacking context and containing

问题 I have created a view in android and I need to animate it from bottom to top and vice versa. I have succeeded in doing this using TranslateAnimation. But the problem is that I have a few buttons on the view. WHen animated there touch point remains at the original place and doesn't get moved to the new position. So when I click the original postion of the button again the top to bottom animation runs but the button is not present there. I have searched the internet and people are saying that

问题 jsfiddle here This is a bug specific to IE and I'm looking for a work around. When I apply a CSS transform: translate to a text input, that has the focus, with transition set to something valid, the cursor stays in the old location while the element moves. Once you start typing it moves to the correct location, but before that the cursor stubbornly blinks at the old location. This code illustrates the problem... again, it's an IE specific bug. var toggleTop = function(){ $('.input-container')

问题 Edit Code added, please see below Edit 2 - Screenshots from device included at bottom along with explanation Edit 3 - New code added I have 2 classes, a rendered and a custom 'quad' class. I have these declared at class level in my renderer class: final float[] mMVPMatrix = new float[16]; final float[] mProjMatrix = new float[16]; final float[] mVMatrix = new float[16]; And in my onSurfaceChanged method I have: @Override public void onSurfaceChanged(GL10 gl, int width, int height) { GLES20

问题 I have a linear layout with three images in it. On the click of any ImageView I want to animate the whole linear layout. The animation consists of two animations - scale and transform. I don't know how to perform this animation. This is what I want - Image 1 - Before Animation Image 2 - After Animation I want to not only animate the View but actually shift the view to its new location with animation. After animation I should be able to click the Images at their new locatoin not the old

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 6 months ago . In My Android Application the view is like this image: Now, Here D is small part which is any view or may ve button. I want is, If the User click on that "D" part, the view appear in the different color should be translate in to the Left to right way and Only the "D" part appear

问题 how can I set toXDelta value from java code? I need to calculate it first so I can't just use final value in xml. I could use animate().translateX on my view but then I can't make animation slowing down till the end.. any ideas? 回答1: You can use Viewfiliper Method. Refrence is : ViewFlipper | Android Developers There is an example in this.(Android ViewFlipper Example) And you make a custum animation in your code(See res/anim Folder) This is example code: The MainActivity.java code: package