There is a Bezier curve in CorelDraw, where Bessel refers to?

Bézier curve is also known as Bézier curve, general vector graphics software uses it to accurately draw curves, Bézier curves are composed of line segments and nodes, nodes are draggable fulcrums, line segments are like retractable rubber bands, and the pen tool we see on the drawing tool is to do this kind of vector curve. Of course, there are also Bezier curve tools in some mature bitmap software, such as Photoshop. There is no full curve tool in Flash4, but there is a Bezier curve tool in Flash5.

Bézier function.

bessel functions

A special class of functions that arise when using cylindrical coordinates to solve physical problems involving potential fields within circles, spheres, and cylinders. Also known as scalar functions. When solving Laplace's equations with column coordinates, Bessel functions are used, which are combined with other functions to form a bar harmonic function.

In addition to elementary functions, Bessel functions are the most commonly used functions in physics and engineering, and they are named after the surname of the 19th-century German astronomer Bessel, who first described them in 1824. The Bezier function was first used in problems involving problems such as catenary oscillation, long cylinder cooling, and tension membrane vibration. A family of Bezier functions, also known as the first class of Bezier functions, denoted jn(x), is defined by the infinite sum of the even powers of x, and the number n is called the order of the Bessel function, which depends on the problem that the function is trying to solve.

The graph of J0 (x) is like a decayed cosine curve, and J1 (X) is like a decayed sine curve (see Fig). The second class of Bezier functions (also known as Neumann functions), denoted as yn(x), is defined by a simple combination of the first class of Bessel functions. The third type of Bessel function (also known as the Hankel function) is defined as hn jn iyn, where i is an imaginary number, and a differential equation called Bessel's equation can be solved with a Bézier function of the n order (positive or negative).

In CorelDraw, Bezier curves refer to the pen tool in the toolbar, which can be used to draw any kind of shape.

The "Bessel" tool is called the "Pen Tool" in Photoshop; Translated as "Bessel tool" in Coreldraw; In Fireworks, it's called "brushes". It is a professional tool used to draw lines. Of course, there are many tools that can also be used to complete the work of drawing lines, such as the common line in Photoshop, airbrush, brush tool in Photoshop, line, pencil and brush tool in Fireworks, free pen in Coreldraw, hand drawing tool and so on.

Drawing straight lines or curves with the Bezier tool is very simple and readily available. The operation feature is that each anchor point is placed on the panel with the mouse, and the effect of a straight line or curve is created according to the path of the anchor points and the order in which they are drawn. We all know that a path is made up of one or more straight or curved segments.

An anchor marks the endpoint of a path segment. On curve segments, each selected anchor point displays one or two direction lines, ending at the direction point. The location of the direction line and direction point determines the size and shape of the curve segment.

Moving these elements will change the shape of the curves in the path, as you can see in the image below.

Paths can be closed, with no start or end point (such as a circle), or open with distinct endpoints (such as a wavy line).

It's the one behind the hand-drawn tool.,Click and drag to draw a curve.。

The Bézier Curve Tool and the X4 Bézier Tool are all the same, but they are called differently.

Is the Bessel tool in CorelDraw not easy to use?

Q: Why can't the Bessel tool in CorelDraw draw M-shaped curves like in PS and AI? But I can only draw S-shapes!

A: No, no, it's just that your method may not be right.

After clicking the start point, drag the arc, double-click with the mouse on the second node (exactly the same function as alt+mouse click directly on the node in PS}, and then you can draw an arc in any direction (you can also be S-shaped or M-shaped), so that you can use the Bezier curve tool to directly draw the outline of the image at once like the path cutout in PS after importing the bitmap.

Below we list the shortcuts for the CorelDraw 9 Bessel curve operation, which may not be mentioned much:

Double-click on a node to turn the node into a sharp corner.

Press the C key to change the tangent direction of the next segment.

Press the S key to change the tangent direction of the upper and lower line segments.

Press the alt key without releasing the left button to move the node.

By pressing Ctrl, the tangent direction can be placed arbitrarily according to the limit angle value of the preset space.

To draw a continuous curve that is not closed and not connected, press the esc key and move the previous node as you go.

You don't have this shortcut on your computer, but you can set it yourself. Method, 1, press, Ctrl+J2, select in the dialog box, Custom-shortcut key 3, set in the toolbar item.

Click as needed to generate a curve.

For Bezier curves in CDR software, it is usually possible to fill the curve by drawing the curve path. If you are using CDR software and your drawn Bezier curves appear to be filled instead of curves, it may be due to the following reasons:

1.Fill Attribute Settings: In CDR software, you can set fill properties such as color, gradient, and so on for the shape you draw. If you set the fill property when you draw a Bézier curve, the curve will appear as a fill.

2.Drawing tool selection hole scrambling: There are a variety of drawing tools in CDR software, such as pen tool, curve tool, etc., and different tools have different effects when drawing Bezier curves.

If you select the Draw Fill Shape tool, the curve drawn by the Thriller may appear as a fill.

3.Paths: In CDR software, you can make and adjust the paths you draw. If you accidentally modify the fill properties or the control points of the path while pathing, it may cause the curve to appear as a fill.

In order to draw a Bezier curve correctly instead of filling the shape, you can try the following:

1.Check the fill properties: Make sure you don't have fill properties set for the Bézier curves you draw. You can view and adjust fill properties in the property bar or in the Fill profile panel.

2.Use the right drawing tools: Choose the right drawing tools, such as the Pen tool, to draw Bézier curves. Make sure you're using a tool that draws curves and not fills shapes.

3.Careful Pathing: When pathing, be careful not to change the fill properties or the control points of the path. Make sure that the shape and curve style of the path are correct.

To sum up, the key to drawing a Bezier curve instead of a fill shape is to set the fill properties correctly, choose the right drawing tools, and path carefully. At the same time, familiarity with the use of CDR software and the characteristics of the tools is also the key to drawing Bezier curves.

CDR (CorelDraw) is a commonly used vector graphic design software, and the old Bezier curve is one of the commonly used drawing tools in CDR. When we draw with the Bezier Curve tool, we usually get a curve path instead of a filled shape. This is because when we draw a Bezier curve, we only define the path of the curve, without specifying the fill color or style of the curve.

If you want to convert a drawn Bezier curve to a filled shape, you can do so by following these steps:

1.Draw Bezier curves: Use the Bezier tool to draw curve paths in the drawing area.

2.Select a curve path: Use the selection tool (usually an arrow-shaped tool) to click on the curve path you drew and select it.

3.To create a filled shape, select "Effects" - "Reshape" - "Curve to Area" in the top menu, or use the shortcut Ctrl+L to convert the selected curve path to a filled shape.

4.Set Fill Style: Select the converted fill shape, and set the desired fill color, gradient, texture, and other styles through the property bar or fill panel.

It is important to note that the more complex the Bezier curve is drawn, the more nodes and adjustments may be involved when changing the turn signal to the fill shape. In addition, the smoothness of the curves also affects the effect of the final fill shape.

For the Bezier curve in the CDR software, you can draw it and fill it in with the following steps:

1.Open the CDR software and select the drawing tool.

2.Select the Bezier Curve tool in the Fight Drawing Tools.

3.Left-click the canvas to determine the starting point of the Bezier curve.

4.Drag the mouse to create a control point to define the shape of the curve. You can change the curvature of the curve by adjusting the position and direction of the control points.

5.Continue adding control points until you reach the desired curve shape.

6.When you're done with the curve, select the Fill tool.

7.Select the desired fill color or gradient effect in the properties bar.

8.Click inside the curve to apply the fill to the area of the curve.

Why: Bezier curves define the shape of a curve through control points, while fills apply a color or gradient effect inside the curve. Therefore, when we use the Bezier curve tool to create a curve in the CDR software, we can achieve the fill effect by selecting the fill tool and clicking inside the curve.

Extended content: Bezier curves can be used to create complex shapes and paths in addition to filling effects. In the CDR software, we can precisely control the shape of the Bezier curve by adding more control points and adjusting their positions.

In addition, you can use the Smoothing and Nodal tools to make further adjustments and optimizations to the curves. Mastering the drawing and techniques of Bezier curves can help us to create beautiful graphics and designs.

For Bezier curves in CDR software, it is normal to draw curves instead of fills, but if you select the fill option when drawing, the result will be fills instead of curves. This is because CDR software offers a wealth of drawing tools and options, including a fill option that allows users to choose whether they want to fill in or not when drawing curves.

The use of fill options can add color and texture to the graphics, making them more vivid and interesting. By selecting the fill option, we can add different face-spine colors, gradients, patterns, or textures to Bezier curves, making the shape more varied.

In addition, CDR software also provides many other drawing tools and options, such as strokes, dashed lines, shadows, etc., which can further beautify and customize the drawn graphics. The flexible use of these tools and options allows us to be more creative and imaginative in our design.

All in all, it is up to the user to choose the fill selection option or the non-fill option when drawing Bezier curves in the CDR software, and the use of fill options can add color and texture to the graphics and make the design more varied.