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We can create a Polygon object by creating an instance of fabric.Polygon. A polygon object can be characterized by any closed shape consisting of a set of connected straight line segments. Since it is one of the basic elements of FabricJS, we can also easily customize it by applying properties like angle, opacity etc. In order to convert a polygon object into HTMLCanvasElement we use the toCanvasElement method. It returns the DOM element of type HTMLCanvasElement, an interface which inherits its properties and methods from the HTMLElement interface. We use the toDataURL method to find the data-URL like representation of ... Read More
We can create a Polygon object by creating an instance of fabric.Polygon. A polygon object can be characterized by any closed shape consisting of a set of connected straight line segments. Since it is one of the basic elements of FabricJS, we can also easily customize it by applying properties like angle, opacity etc. In order to convert a polygon object into HTMLCanvasElement we use the toCanvasElement method. It returns the DOM element of type HTMLCanvasElement, an interface which inherits its properties and methods from the HTMLElement interface. We use the width and height properties of HTMLCanvasElement that it inherits ... Read More
We can create a Polygon object by creating an instance of fabric.Polygon. A polygon object can be characterized by any closed shape consisting of a set of connected straight line segments. Since it is one of the basic elements of FabricJS, we can also easily customize it by applying properties like angle, opacity etc. In order to convert a polygon object into HTMLCanvasElement we use the toCanvasElement method. It returns the DOM element of type HTMLCanvasElement, an interface which inherits its properties and methods from the HTMLElement interface. We use the getContext method to find a drawing context on ... Read More
We can create a Polygon object by creating an instance of fabric.Polygon. A polygon object can be characterized by any closed shape consisting of a set of connected straight line segments. Since it is one of the basic elements of FabricJS, we can also easily customize it by applying properties like angle, opacity etc. In order to find the transform matrix which represents current transformations, we use the calcOwnMatrix method. Syntax calcOwnMatrix(): Array Example 1: Using the calcOwnMatrix Method Let’s see a code example of how we can find the transform matrix which represents current transformations of a ... Read More
We can create a Polygon object by creating an instance of fabric.Polygon. A polygon object can be characterized by any closed shape consisting of a set of connected straight line segments. Since it is one of the basic elements of FabricJS, we can also easily customize it by applying properties like angle, opacity etc. In order to check if a Polygon object intersects with another object, we use the intersectsWithObject method. This method checks whether the object that is passed to it, intersects with the polygon object. Syntax intersectsWithObject(other: Object, absolute: Boolean, calculate: Boolean ): Boolean Parameters ... Read More
In this article, we will learn how to write a swift program to calculate standard deviation. Standard deviation is a measure, which will represent how much variation from the mean exists, or we can say that it is used to calculate the extent to which the values are differ from the average. $$\mathrm{\sigma\:=\:\sqrt{{\frac{1}{N}}\sum_{i=1}^N\:(X_i-\mu)^2}}$$ The mathematical formula of standard deviation is- σ = standard deviation N = total number of elements Xi = ith element \mu = Mean of the given elements Therefore, in this article, we calculate the standard deviation of the given array by using the ... Read More
In this article, we will learn how to write a swift program to check whether two matrices are equal or not. Here, we create two matrices, and using the not equal to the operator (!=), we check whether all the elements of both matrices are equal or not. Algorithm Step 1 − Create a function. Step 2 − Use nested for loop to iterate through each row and column. Step 3 − Check if the element of matrix1 is not equal to matrix2. If the condition is true, then return 0, otherwise, return 1. Step 4 − Create two ... Read More
In this article, we will learn how to write a swift program to compute the sum of diagonals of a matrix. Every matrix has two diagonals which are known as primary and secondary diagonals. For example, we have the following 5x5 square matrix − 2 3 4 5 6 4 6 7 8 9 1 1 1 3 4 4 0 4 0 4 0 0 1 1 1 So the primary diagonal is formed by using elements 2, 6, 1, 0, 1 and the secondary diagonal is formed by using elements 6, 8, 1, 0, 0. Hence the ... Read More
In this article, we will learn how to write a swift program to display upper triangular matrix. Upper triangular matrix is a matrix in which all the elements below the primary diagonal are zero. As shown in the below image − $$\mathrm{\begin{bmatrix} 1 & 4 & 6 & 7 & 8 & 8ewline 0 & 5 & 6 & 8 & 9 & 9ewline 0 & 0 & 6 & 7 & 8 & 3ewline 0 & 0 & 0 & 2 & 1 & 1ewline 0 & 0 & 0 & 0 & 2 & 1ewline 0 & 0 ... Read More
In this article, we will learn how to write a swift program to find the sum of the boundary elements of a matrix. Boundary elements of a matrix are those elements that are present on the boundary of the matrix that are elements in the first row, last row, first column, and last column. For example − Given Matrix: 2 4 5 6 7 8 4 5 6 7 3 2 3 4 5 6 2 1 1 1 1 1 1 1 3 4 3 4 3 4 2 2 2 2 2 2 Boundary elements are: ... Read More