scale

问题 I loaded an image and I want it to rotate around its center, while its scale is getting larger. I know how to rotate an image around its center originally, but it's hard for me to calculate the position if the scale is getting larger. I tried it, but the image just 'dances', not staying in the center. 回答1: Short answer: Store the center of the source image rectangle and update the center of the rotated and zoomed image rectangle after the rotation and zoom operation, by the stored center

问题 I have implemented the Scale gesture for the container. Also, I have added onHorizontalDragUpdate and onVerticalDragUpdate. But when I try to add both, I get an exception saying can't implement both with Scale gesture. Even for Pan gesture, it throws the same exception. Below is my code: import 'package:flutter/material.dart'; import 'package:vector_math/vector_math_64.dart' hide Colors; import 'dart: math' as math; class HomeScreen extends StatefulWidget { @override State<StatefulWidget>

问题 I have implemented the Scale gesture for the container. Also, I have added onHorizontalDragUpdate and onVerticalDragUpdate. But when I try to add both, I get an exception saying can't implement both with Scale gesture. Even for Pan gesture, it throws the same exception. Below is my code: import 'package:flutter/material.dart'; import 'package:vector_math/vector_math_64.dart' hide Colors; import 'dart: math' as math; class HomeScreen extends StatefulWidget { @override State<StatefulWidget>

问题 I am working on a store page. The page is filled with panel prefabs. For some reason when it fills the prefabs it is more than doubling the scale size of the prefab. If I drag the prefab into place it works as expected. I don't have any code in the program targeting scale. I am not sure where it is coming from. This is the code I am using for the list population. [System.Serializable] public class Item { public string itemName; public int price; } public class ShopScrollList : MonoBehaviour {

问题 This question, there is a point that is different from the "css scale chrome" other questions. iframe is moved to a specific location, text will be displayed correctly. And, when moved to a position where there is a problem again, the text will be blur. Move will be executed position of jquery. Why iframe is moved, text will be displayed correctly? screen shots. http://ggamagidev.blogspot.com/2013/12/blurry-text-with-css-scaled-iframe-in.html It is applied to the iframe, but they failed. //

问题 This question, there is a point that is different from the "css scale chrome" other questions. iframe is moved to a specific location, text will be displayed correctly. And, when moved to a position where there is a problem again, the text will be blur. Move will be executed position of jquery. Why iframe is moved, text will be displayed correctly? screen shots. http://ggamagidev.blogspot.com/2013/12/blurry-text-with-css-scaled-iframe-in.html It is applied to the iframe, but they failed. //

问题 With the help of @Justin on another post, I plotted simulation result with the facet_grid option in ggplot2. The post with data and answer is here: Use facet_grid option to plot column of dataframe with ggplot2 Here a copy of original sample data with added information about scale_x min and max values for each parameter type : dat <- read.table(textConnection("P1 P2 P3 P4 R 1 2e-5 1.0 0.6 3 1 2 4e-6 1.5 0.7 1.5 2 3 6e-7 1.2 0.6 2.5 3 4 8e-8 1.45 0.65 3.2 4 ")) scalx <- read.table

问题 The method I am trying to use is the: drawImage(image, int, int, int, int, ImageObserver) method so that i can scale my image, on all the examples i've seen the ImageObserver should be this, but this doesn't seem to work(i.e. the only methods i have seen is: drawImage(image, int, int, ImageObserver), don't know if this makes a difference). Here is my main class that is the applet: import java.applet.*; import java.awt.*; public class Main extends Applet implements Runnable{ private Thread th;

问题 I am using Zoom effect with ImageView so I need to use scaletype=matrix. Now, I want to set Center position to ImageView but I am not able to set it. Please help me regarding this. layout.xml : <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" > <ImageView android:id="@+id/imgImage" android:layout_width="fill_parent" android:layout_height="fill_parent"

问题 When using UIPinchGestureRecognizer what is the best way to detect/read the pinch scale in horizontal and vertical directions individually? I saw this post UIPinchGestureRecognizer Scale view in different x and y directions but I noticed there were so many going back and forth for such a seemingly routine task that I am not sure that is the best answer/way. If not using UIPinchGestureRecognizer altogether for this purpose is the answer, what's the best way to detect pinch scale in two