Let's take a look at the map projection used by Google Maps.
Google Maps,Virtual EarthMap projection used by network geography is often calledWeb MercatorOrSpherical MercatorThe main difference between it and conventional mocato projection is thatSimulate the Earth as a sphere rather than an elliptical body. For more information about why projection is required, see liongg'sWhy map projection
Why is it a Circular Sphere instead of an
Central Earth space (Cartesian) coordinate system-defined as the origin O and the earth center coincidence, the Z axis points to the earth's Arctic, the X axis points to the intersection of the Greenwich Meridian and the Earth's equator, the Y axis perpendicular to the XOZ plane constitute the right hand coordinate system. The Cartesian coordinate system of the central Earth space is a type of coordinate system, which is used to describe the position of any point in measurement.
Earth-centric co
press the left mouse button to drag the control point for the first time, two control handles will appear on both sides of the control point. If you drag the mouse freely, the control handles will always take the control point as the symmetric point. When you release the mouse and adjust any one, the other will be locked. After adjusting the image, click the mouse again on the control point, and the adjusted control point is restored to the form when no adjustment is made.6. After adjusting the
to the point specified by X and Y). Cdc::lineto BOOL LineTo (int x, int y); BOOL LineTo (Point point);D Raws a line from the current position up to, but not including, the point specified by X and Y (or point). The line was drawn with the selected pen. The current position are set to X, Y or to point.------------------------Ellipse and Arc------------------------------------draw ellipse CDC:: Ellipse BOOL Ellipse (int x1, int y1, int x2, int y2); BOOL Ellipse (lpcrect lpRect);D raws an Ellipse
in Figure 3.
Figure 2
Figure 3
3, double-click the layer to bring up the layer style, parameter settings such as Figure 4, the effect is shown in Figure 5.
Figure 4
Figure 5
4, the "Main outline" layer selection, implementation: select > Modify > Shrink, the value is 30, as shown in Figure 6, press CTRL + ALT + D Feather 25 pixels, create a new layer fill color: #12A3E6, the effect is shown in Figure 8.
Figure 6
Figure 7
Figure 8
5, bring up the "body Contour" layer sele
At present, there are 4 kinds of settlement methods in the world, such as physical damage settlement, spell damage settlement, no property damage settlement, continuous injury settlement.
Physical damage Settlement
Physical damage, physical attack, armor, armor penetration, physical damage remission, and physical immunity are all related to the final settlement of physical damage. Divine Physical damage is the neglect of armor, which can suck bloo
Canvas in HTML5 does not directly provide the method for drawing an ellipse. The following is a summary of several painting methods. Various methods have advantages and disadvantages, which are selected as needed. The parameters of each method are the same: context is the 2D drawing environment object of Canvas, x is the abscissa of the center of the elliptical, and y is the elliptical ...,. Canvas in HTML5
Comments: Canvas in HTML5 does not directly provide the method for drawing an ellipse. The following is a summary of several painting methods. Various methods have advantages and disadvantages, which are selected as needed. Parameters for each method are the same. If you are interested, referOverview Canvas in HTML5 does not directly provide the method for drawing an ellipse. The following is a summary of several painting methods. Various methods have advantages and disadvantages, which are sele
cubic equation (besell) curve: Smooth cubic bezr curve (S)(7) smoothing quadratic equation: smooth quadratic bezr curve (T)(8) elliptical Arc: elliptical Arc ()The English letters enclosed in parentheses in each of the above shapes are abbreviated to uppercase, but you can also use lowercase letters. The difference between uppercase and lowercase is that uppercase is the absolute value and lowercase is the
surface is used.
Characteristics of the leveling surface-a gravity equality surface that is orthogonal and closed to the vertical line everywhere.
Vertical Line-the baseline for measurement.
Level and OID
2. measurement and calculation datum-rotating elliptical
Due to the uneven distribution of mass inside the Earth, irregular changes may occur in the direction of the vertical line. As a result, the geoid becomes a complex surface and can
Now, if we want to replace the rectangular element nodes in the original gefpractice example with an elliptical shape, what changes do we need? Obviously, you must first change the nodefigure class that originally inherits rectanglefigure to ellipse:
Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->
Public
Class
Nodefigure
Extends
Ellipse
/*
Rectanglefigure
*/
{}
After this modifi
Let's give you a detailed analysis of the Illustrator software and share the tutorial on drawing a cute blue bird.Tutorial sharing:1. In Ai software, create a 800*800 document, select the elliptical tool, draw an elliptical image, and fill in the color, as shown in the figure.2. Select a tool and adjust the anchor of the elliptical image, as shown in the foll
.
* Get a circle or ellipse that fits into the rectangle specified by the x, Y, width, and height parameters.
* Ellipse Overlay area width + 1 pixels, height + 1 pixels.
/public abstract void DrawOval (int x, int y, int width, int height)
/**
* Fills the ellipse of the specified rectangular box with the current color.
*
/public abstract void Filloval (int x, int y, int width, int height)
You can also draw a circle in an elliptical way, and when
, pull out the radial gradient in Figure 5.
Figure 4
Figure 5
4, the choice of Dodge tools to slightly fill the light, the effect of the following figure.
Figure 6
5, create a new layer, with the elliptical marquee tool pull a positive circle selection, press CTRL + ALT + D feather 10 pixels, such as Figure 7, and then fill the color: #EDA14B, the effect as shown in Figure 8.
Figure 7/p>
Figure 8/p>
6. Create a new layer, use the
§4 Parabolic
1. Elliptical Paraboloid
(1) Standard equation
(2) Basic elements
* Vertex O (0,0,0)
* Spindle Z-axis
* Main plane Oyz plane: X=0;ozx plane: y=0
(3) When a=b, the elliptical parabolic surface is rotated by the parabola of the OZX plane around the z axis.
(4) intersection of planar and elliptic parabolic surfaces
* The intersection of planar and elliptic parabolic surfaces parallel to the z-axi
The 2015 holiday notice a release, a lot of children's shoes are beginning to think how to spell fake! Small series also weak weak in the life calendar looked at the next 2015 years of vacation arrangements, by the way in the mind of the next 2015 years have what the vacation time can be spelled false
The so-called spell leave, we should be aware of each holiday time. Children's shoes first open the calend
column, many of them will be the path of the directory casually put, or directly set him to the program default, but do not know when the path appears with the relevant keywords can also be helpful to the rankings. So, a small detail of the impact of the site rankings can not be ignored, following the author to see the Site Directory path optimization design techniques.
First, the directory site as far as possible use full spell
Many webmasters m
Purpose: The most difficult to change the kind of animals need the magic spell shortest.Using the adjacency matrix, the shortest distance between each vertex is recorded by the Floyd algorithm.With Weighttype findmaxdist (Weighttype d[][maxvertexnum], Vertex i,int N); Find the most difficult enchantments for the vertex to other verticesChoose one of the shortest in the most difficult spells. That is, the most difficult to change the animal needs to th
each other.Powerful fuzzy sound support: Support C=ch, S=sh, Z=zh, K=g, F=h, L=n, An=ang, En=eng, In=ing,ian=iang, Uan=uang a total of 11 sets of fuzzy sound, and can be any combination of groups of fuzzy sound.0 Memory Double Spell code: support the whole spell or simple spelling and double spelling or simple spelling two pinyin input methods. Two-way solution does not need to remember: If the "Show promp
In our SOR McGonagall's class of transfiguration, Harry Potter is learning how
To transform one object into another by some spells. He has learned that, to turn a catInto a mouse one can say docamo! To reverse the effect, simply say decamo!Formally speaking, the transfiguration spell to transform between object A and ObjectB is said to be s if there are two spells, DOS and DES, to turn a into B and vice versa,Respectively.In some cases, short-cut spel
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