rectangles


Simultaneously Aggregating Overlapping Ranges (A Rectangle Problem)

喜你入骨 提交于 2020-02-06 23:59:44
问题 My Problem Consider a set of data with two intervals. For instance, consider a student schedule of classes. Each record has a begin and end date, and each class has a period start time and a period end time. But this schedule is not 'normalized' in the sense that some records overlap. So if you search for records encompassing a given date and period for a student, you might get multiple matches. Here's a contrived example. I represent the dates as integers to simplify the problem: declare

Center of rotated cv::Rect

帅比萌擦擦* 提交于 2020-01-23 05:35:46
问题 I have an image, and I place a rectangle on the image. Then I rotate the image. How do I get the center of the rectangle on the rotated image? Or can I rotate a rectangle somehow to put on rotated image? I think in this case rotation must be done along same point with point used to rotate image. This is the image with a rectangle placed on it. This is the rotated image. Here is the code I use to rotate my image: cv::Mat frame, frameRotated; frame = cv::imread("lena.png"); cv::Rect rect(225

c# Take a screenshot of specific area [closed]

[亡魂溺海] 提交于 2020-01-14 05:02:48
问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 7 years ago . I know there are many questions like this but none of their answers are working for me or just I can't do it correctly, anyway if it's possible please give me a simple code! I know the location of the green dot

How to divide a set of overlapping ranges into non-overlapping ranges?

送分小仙女□ 提交于 2020-01-12 07:16:13
问题 Let's say you have a set of ranges: 0 - 100: 'a' 0 - 75: 'b' 95 - 150: 'c' 120 - 130: 'd' Obviously, these ranges overlap at certain points. How would you dissect these ranges to produce a list of non-overlapping ranges, while retaining information associated with their original range (in this case, the letter after the range)? For example, the results of the above after running the algorithm would be: 0 - 75: 'a', 'b' 76 - 94: 'a' 95 - 100: 'a', 'c' 101 - 119: 'c' 120 - 130: 'c', 'd' 131 -

How can I draw a rounded rectangle as the border for a rounded Form?

Deadly 提交于 2020-01-11 10:53:10
问题 I'm creating a Form that has a rounded border (as shown in this question). As this person also seems to have an issue with, I can't seem to draw a rounded border. This is code I have used for setting up the actual border shape: // ... within InitializeComponent ... this.FormBorderStyle = FormBorderStyle.None; IntPtr handle = CreateRoundRectRgn(0, 0, Width, Height, 20, 20); Region = System.Drawing.Region.FromHrgn(handle); DeleteObject(handle); this.ResizeRedraw = true; This is code that

How can I draw a rounded rectangle as the border for a rounded Form?

拥有回忆 提交于 2020-01-11 10:53:10
问题 I'm creating a Form that has a rounded border (as shown in this question). As this person also seems to have an issue with, I can't seem to draw a rounded border. This is code I have used for setting up the actual border shape: // ... within InitializeComponent ... this.FormBorderStyle = FormBorderStyle.None; IntPtr handle = CreateRoundRectRgn(0, 0, Width, Height, 20, 20); Region = System.Drawing.Region.FromHrgn(handle); DeleteObject(handle); this.ResizeRedraw = true; This is code that

How to divide an area composed of small squares into bigger rectangles?

非 Y 不嫁゛ 提交于 2020-01-10 14:24:23
问题 Where would i go to look for algorithms that take a 2d grid of values that are either 0 or 1 as input and then identifies all possible non-overlapping rectangles in it? In a more practical explanation: I am drawing a grid that is represented by a number of squares, and i wish to find a way to combine as many adjacent squares into rectangles as possible, in order to cut down on the time spent on cycling through each square and drawing it. Maximum efficiency is not needed, speed is more

Qt drawing a filled rounded rectangle with border

落花浮王杯 提交于 2020-01-09 19:03:07
问题 I want to draw a rectangle with rounded corners (border radius same for all 4 corners) with a specific color filling the entire rectangle, and a separate border color (say border is 1 px wide). From my observation, Qt provides three methods - fillRect and drawRect and drawRoundedRect . I have tried them, they don't work like I want to. There is no method like fillRoundedRect . Which means that I can draw a rounded rectangle but it won't be filled with the color I want. How do I do it? And

Having trouble drawing simple rectangle in picturebox

断了今生、忘了曾经 提交于 2020-01-06 20:38:13
问题 I have a picture box that will be showing an image. I want the user to be able to click, drag, and mouse up to a rectangle on the image. Like "I want to do something using this rectangle I drew here on this picture". If they click again, I want the previous rectangle to disappear and they start over or when I click a button to clear the highlighting rectangle they drew. So I did find some good starting code from the msdn example about creating a zoom in rubber band rectangle that I edited a

Draw rectangle on mouse click [Python]

旧街凉风 提交于 2020-01-03 03:45:05
问题 def xaxis(event): x1, y1 = (event.x - 1), (event.y - 1) def yaxis(event): x2, y2 = (event.x + 1), (event.y + 1) def create(event): w.create_rectangle(x1,y1,x2,y2,fill='Black') w = Canvas(root, width=canvas_width, height=canvas_height) w.config(cursor='cross') w.pack(expand=YES, fill=BOTH) w.bind("<Button-1>", xaxis) w.bind("<ButtonRelease-1>", yaxis) w.bind("<ButtonRelease-1>", create) The shell says Exception in Tkinter callback Traceback (most recent call last): File "/Library/Frameworks

工具导航Map