What is scan line filling?
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What is scan line filling?
Scanline filling is basically filling up of polygons using horizontal lines or scanlines. The purpose of the SLPF algorithm is to fill (color) the interior pixels of a polygon given only the vertices of the figure.
What are the steps required to fill a region using the boundary fill method?
Boundary Fill algorithms are used to fill the boundary and flood-fill algorithm are used to fill the interior….Algorithm:
- Procedure fill (x, y, color, color1: integer)
- int c;
- c=getpixel (x, y);
- if (c!= color) (c!= color1)
- {
- setpixel (x, y, color)
- fill (x+1, y, color, color 1);
- fill (x-1, y, color, color 1);
Which of the following is true about scan line?
In scan line algorithm, Scan lines are processed in increasing (upward) / decreasing (downward) ————————–….
| Q. | Which of the following is true about scan line algorithm? |
|---|---|
| B. | it works at pixel level |
| C. | it uses scan lines to fill the polygon |
| D. | all of above |
| Answer» c. it uses scan lines to fill the polygon |
What is filling filling vs boundary filling?
In Flood-fill algorithm a random colour can be used to paint the interior portion then the old one is replaced with a new one. In Boundary-fill algorithm Interior points are painted by continuously searching for the boundary colour. It requires huge amount of memory.
What do you mean by area filling?
area filling Painting a defined area with a specific color or pattern. If the area is defined by a set of boundary pixels, there are specific algorithms for area filling starting from a seed pixel inside the boundary. A Dictionary of Computing.
What is boundary fill algorithm?
Boundary fill is the algorithm used frequently in computer graphics to fill a desired color inside a closed polygon having the same boundary color for all of its sides. The most approached implementation of the algorithm is a stack-based recursive function.
What is boundary filling?
What is area filling?
area filling Painting a defined area with a specific color or pattern. If the area is defined by a set of boundary pixels, there are specific algorithms for area filling starting from a seed pixel inside the boundary. A Dictionary of Computing. “area filling .” A Dictionary of Computing. .
What is scan line coherence?
It is an image space algorithm. It processes one line at a time rather than one pixel at a time. It uses the concept area of coherence. This algorithm records edge list, active edge list.
What is scan line polygon fill algorithm explain the algorithm with the help of an example?
Scan Line Algorithm Step 1 − Find out the Ymin and Ymax from the given polygon. Step 2 − ScanLine intersects with each edge of the polygon from Ymin to Ymax. Name each intersection point of the polygon. As per the figure shown above, they are named as p0, p1, p2, p3.
What is boundary fill?
What is scan-line polygon fill algorithm explain the algorithm with the help of an example use appropriate diagrams wherever necessary?
What is scan line polygon fill algorithm explain the algorithm with the help of an example use appropriate diagrams wherever necessary?
What are the types of area fill attributes?
Fill Area Attributes
- FillOutlineType. FillOutlineType is an integer-value attribute that turns on or off the drawing of an outline around filled areas.
- FillOutlineColor. FillOutlineColor is a Color-valued attribute that determines the color used to outline the filled regions.
- FillType.
- FillColor.
- Gradient.
What are advantages of scan line polygon fill algorithm?
Advantage of scan-line fill: It does fill in the same order as rendering, and so can be pipelined. Scan Line Fill: What happens at edge end-point? Edge endpoint is duplicated. In other words, when a scan line intersects an edge endpoint, it intersects two edges.
What is vertical scan lines?
The scan lines are the vertical resolution of the system; for example, an NTSC TV signal uses 525 lines, 480 of which contain image data (“active” scan lines) and 45 are the vertical blanking interval (VBI) in between the frames. Following are the active scan lines of various video formats.
What is polygon filling explain boundary fill algorithm?
How does boundary fill algorithm work?
Introduction : Boundary Fill Algorithm starts at a pixel inside the polygon to be filled and paints the interior proceeding outwards towards the boundary. This algorithm works only if the color with which the region has to be filled and the color of the boundary of the region are different.
What are curve attributes explain?
The line and curve attributes include the current position, brush style, brush color, pen style, pen color, transformation, and so on. The default current position for any DC is located at the point (0,0) in logical (or world) space.
What components does scan line fill algorithm?
