I. Vector concept What is a vector image? Vector image, also known as an object-oriented image or drawing image, is defined as a point of a series of lines. The graphic element in the vector file is called object. Each object is a self-contained entity, which has properties such as color, shape, contour, size, and screen position. Since each object is a self-contained entity, you can maintain and change its properties while maintaining its original clarity and curvature, without affecting other objects in the legend. These features make the vector-based program particularly suitable for illustrations and three-dimensional modeling because they typically require creating and operating a single object. Vector drawing is independent of the resolution. This means they can be displayed on the output device according to the highest resolution. What is a bitmap image? Compared to the vector-based drawing program, editing photo programs like Photoshop is used to process bitmap images. When you handle bitmap images, you can optimize tiny detail to make significant changes, and enhanced effects. Bitchart image, also known as a dot matrix image or drawing an image, is composed of a single point called pixels (picture elements). These points can make different arrangements and staining to constitute the pattern. When a large bit is placed, you can see the countless single blocks of the entire image. The effect of expanding bitmap size is increasing a single pixel, so that the lines and shapes are uneven. However, if it is viewed from a slightly far, the color and shape of the bitmap image are also continuous. Since each pixel is individually dyed, you can generate a realistic effect of approximate photos by operating the selection area at a frequency of each pixel, such as deepening the shadow and aggravating colors. The reduction bitmap size also deforms the original image because the move is made smaller by reducing pixels. Also, since the bitmap image is created in the form of a collected pixel set, it cannot be operated separately (such as a mobile) local bitmap. Why is the resolution when processing a bitmap? When processing the bitmap, the quality of the output image is determined at the beginning of the processing process. The resolution is a general term that refers to the size of the details and information contained in an image file, and the degree of input, output, or display device can generate. When the operation bitmap, the resolution will affect the quality of the final output and affect the size of the file. The processing bitmap requires three thoughts, because the resolution to the image is usually accompanied by files throughout the process. Whether in a 300 DPI printer or on a 2570dpi-oriented device device, the file is always printed in the resolution size set when the image is created, unless the resolution of the printer is below the resolution of the image. If you want the final output to appear to be displayed on the screen, you need to understand the relationship between the resolution of the image and the resolution of different devices before starting. Obviously the vector map does not have to consider so much. Learn more about the object in CorelDRAW can be any basic drawing element or a line of text, such as lines, ellipses, polygons, rectangles, labels or a line of art characters. Once a simple object is created, it can define its features, such as filling color, contour color, curve smoothness, etc., and apply special effects on it. In this information, including the location of the object in the screen, create its order, and the defined attribute value, will be part of the object. This means that when an object (such as a mobile object), CoreLDRAW rebuilt its shape and all properties. Objects can have a closed path or an open path. A group object is made of one or more objects. When you select an object with the Selection Tool, you can identify it through the selection box around it. When an object is selected, the edge angle and midpoint of the selection box will appear 8 fill squares. Each individual object has its own selection box. When combining two or more objects with the "Group" command, a group will be generated, which can be used as an object to select and operate. The object consists of a path that constitutes its contour and boundaries. A path can be constructed from a single or several line segments. Each line segment has a hollow square called a node.
A node of an object can be selected by a shape tool to change its overall shape and bending angle. What is the difference between open path objects and closed path objects? The two endpoints of open path objects are not intended. The closed path object is the object of the two endpoints that constitute a continuous path. Open path objects may be straight, or curves, such as lines created by hand-painted tools, lines created with Bessel Curve tools or thread lines created with threaded tools. However, when using the Hand-painted tool, "or" Bezier Curve Tool ", the starting point and the end point can also create a closed path. Closed path objects include circles, squares, mesh, natural pen, polygons, and stars. Closed path objects can be filled, while open path objects cannot be filled.
Second, SVG basic concept Related Website: http://www.learnsvg.com/
