straight ruler

Someone asked me on the snow watching forum. So I wrote this code by the way. Q: I encountered this problem when writing code. Set the points A (100,100) and B (200,200) to a straight line. How can I get, b: All vertices in a straight line connected by two points. The brother can give a formula. Thank you first.A: We can use the vectors to obtain the result in collinearity. I learned this in middle school:I

Question: I will give you a straight line and several circles, and find out the proportion of the length of the circle and the straight line to the whole line. Solution: calculate the percentage of the Cross-circle between the circle and the straight line by using the method of determining the ratio of points. Step 1: (determine whether the projection direction i

ruler tool by clicking the other tool buttons in the toolbox. The tilt angle, position, and length of the drawn line are displayed in the Tools Options bar and the info panel. Photoshop CS6 use ruler tools to measure angles 4. At the angle of the measurement to press the left mouse button, do not release, and then drag the mouse to draw a straight line, and t

1. inkcanvas class. Inkcanvas is required to implement the canvas. Generally, noCodeYou can draw a line on it. If you need to set the paint brush color and pen tip size, you need to set defadradrawingattributes, for example: Drawingattributes attributes = new drawingattributes (); Attributes. Color = colors. Black; Attributes. Height = 50; Attributes. width = 50; Attributes. fittocurve = true; 2. draw a straight line on inkcanvas Method: Mod

Determine whether two straight lines are intersecting in 3D space Straight line r1 (S) = O1 + S * D1 Straight line R2 (t) = O2 + T * D2 R1 (S) = R2 (t) => O1 + S * D1 = O2 + T * D2 => S * D1 × d2 = (o2-o1 + T * D2) × d2 T * D2 × d1 = (01-02 + S * D1) × d1 => Because D x D = 0 => S * (d1 × d2) = (o2-o1) × d2 T * (D2 × d1) = (o1-o2) × d1 => S * (d1 × d2)

x1y1x2y2x3y3x4y4.Thus each of these input lines represents two lines on the plane: The line through (x1, Y1) and (X2, Y2) and the line through (X3, Y3) and (X4, y4 ). the point (x1, Y1) is always distinct from (X2, Y2 ). likewise with (X3, Y3) and (X4, Y4 ).OutputThere shoshould be n + 2 lines of output. the first line of output shocould read intersecting lines output. there will then be one line of output for each pair of planar lines represented by a line of input, describing how the lines in

Final effect: The specific drawing steps are as follows: Step one: Draw a 21cm*2.3cm rectangle with a rectangular tool, the color size of the Shahuang (0,20,40,0) Step two: This is a 20-centimeter ruler, which draws a straight line with a pen or Bezier tool, Spacing is 5MM, (at 5mm in each place a slightly elongated straight line, in e

The ruler tool in Word is very useful, perhaps someone often uses it, and perhaps few people use it. With the ruler we can easily adjust the margins, change the indentation of the paragraph, set line spacing, table row height and column width and alignment settings, and so on. There are many friends who say that the ruler of his word is missing. In fact, the

1. Let's look at how to display or hide the ruler:Open a Word document, click "View"-"show/hide", and select "ruler" to show the ruler. If it is hidden, cancel the selection.2. Word2007 vertical ruler method:In word2007, click "Office button"-"Word option"-"advanced"-"display"-"display

modify the memory of the software, if there is a good graphics card, tick "Use graphics processor" to speed up the graphics processing speed, especially when rendering three-dimensional layer of the effect is obvious, of course, the premise is a good professional graphics card. When dealing with two-dimensional images, the effect is small. You can also modify the number of steps for history and the cache. Finally, don't forget to click "OK"Ruler Unit

MathType Ruler Sample Here's how to remove the MathType ruler, as follows: 1. Open the MathType software and enter the interface to edit the formula. The way to open the MathType edit window is very simple also many, can choose according to own custom, here will not repeat. 2. In the MathType interface window, select "View"-"ruler" in the menu, and you will no

Ruler method is actually a very simple algorithm, thought has been used, but has not known. These two days happened to do two questions about the ruler, just to summarize.First, what is a ruler? The ruler method usually refers to the array to save a pair of subscript (starting point, focus), and then according to the a

Beyond Compare File comparison display Ruler method When using beyond compare, many people have encountered the need to use the ruler. In fact, Beyond compare as an unparalleled contrast software, also has a ruler option to facilitate user action, by default, the ruler function is hidden, then in this article will sha