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In the previous article, we learned the surface removal and cropping modes.
This article will use this knowledge to implement a simple, but very common example: make an image into a rounded rectangle.
Example 3: shader with rounded corners
Well, I
Convex Polygon minimum area external rectangle
Returns a convex polygon.PThe minimum area can be mountedPWhat is the rectangle of (as far as the periphery is concerned? Technically speaking, given a direction, we can calculatePAnd create an external
Convex Polygon minimum perimeter external rectangle
This problem is similar to the smallest area external rectangle. Our goal is to find an external polygon in the smallest box (for perimeter ).P.
What is interesting is that the minimum area and
First, let's take a look at cgcontextref:
An opaque type that represents a quartz 2D drawing environment.
Graphics context is a graphical context. It can be understood as a canvas. We can draw a canvas on it. After the painting is complete, place
In fact, I am not very good at the algorithm, but the project is useful to some kind of algorithm to achieve a certain function, but also have to bite the bullet to achieve.This is a very early project, to calculate the minimum bounding rectangle of
Collision Detection TechnologyIn the game, collisions are the most frequently encountered technology. Of course, many game engines have already done collision detection, and we just need to call them. This lesson is explained from the principle of
Document directory
2. Method for Calculating the range of Path.
1. With such a framework, it is very easy to add new graphic elements, as is the image class.
For more information about the series of directories, see.
This section mainly solves
【摘要】
This paper introduces the application of maximal thought in this kind of problem, aiming at the problem of maximal (or optimal) sub-rectangle and related deformation in recent times. Two algorithms with certain generality are analyzed. Some
This article mainly introduces Python's method of determining whether a straight line and a rectangle are intersecting. It involves the calculation of the line and a rectangle in the Python coordinate system and has some reference value, for more
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