I've been learning real-time rendering recently, and it's hard to touch linear algebra. And in the rendering, will be used to the matrix, when I went to review the book I read before, found that "unity3d actual combat core technical details" on the matrix there are several errors, special marked out. The first chapter of the
Topic:
Given an integer matrix map, the values are only 0 and 12, and the largest rectangular area is 1 of all rectangular regions that are all 1.
1 0 1 1
1 1 1 1
1 1 1 0
Of these, the largest rectangular area has 6 1, so it returns 6.
Train of thought: in each row to do cutting, statistics in the current row as the bottom of the case, each position up to the number of consecutive 1, using the height of the array of heights to represent.When the fi
Write in frontThanks to all the friends who came in to see. Yes, I'm currently going to write a book about unity shader.The purpose of the book is to have the following several:
Summarize my experience with unity Shader and give others a reference. I am very aware of the difficulties of learning shader, and I have seen many questions raised by people in the group. I think learning shader is still a
Write in frontThanks to all the friends who came in to see. Yes, I'm currently going to write a book about unity shader.The purpose of the book is to have the following several:
Summarize my experience with unity Shader and give others a reference. I am very aware of the difficulties of learning shader, and I have seen many questions raised by people in the group. I think learning shader is still a
Further Thoughts on the hacker Empire (repost)Posted from the first class of the wheat course. Original: BeckhamWithout a good understanding of the new theory of matrix, it would be a waste of time to watch this play.IntroductionAfter reading Matrix Reloaded, many of the suspense in it has aroused confusion and thinking. A layer of theory (Computer Virtual matrix
Clairvoyant-Linear algebra-matrix theoryBook recommendations:Linear algebra: Domestic I think Li Shangzhi's linear algebra and blue to the high-generation concise tutorial is very good, the concept of explanation is very easy to understand, the study of computational skills is recommended to read the Xu Yisu linear algebra and Matrix theory (second Edition), there are legendary hole-punching skills. 龚晟 wrot
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However, transpose is easy to understand for arrays, that is, to swap rows and columns.
Void transpose1 (item * a, item * B) {int col = a [0]. row; int row = a [0]. col; int value = a [0]. value; B [0]. row = row; // first fill the value of B [0] with B [0]. col = col; B [0]. value = value; int num = 1; // num indicates the array subscript of the B Matrix. Because the first value has been set, it starts from 1 for (int I = 0; I
From the code, we ca
Matrix derivation of the Fibonacci series (you can give up the matrix if you cannot understand it) and the Fibonacci Matrix
I. Matrix Multiplication
Set the matrix A and B to meet the following requirements: the number of columns of A = the number of rows of B
Calculation ru
Conversion matrix used in front-end development of CSS3, css3 Matrix
I have been thinking about the blog about matrix transformation for a long time. Today I saw a blog written by winter, CSS3: mathematical principles behind transform and transition. Note: The following Demonstration content must be supported by modern browsers. For example, Chrome/Firefox/Opera.
Matrix-matrix-2018 June 9Today is a pity, not too much to learn R language (mainly because to listen to party lecture, learned the party important speech, so no reading), so today summed up a matrix bar. But more study.First of all, a little review of yesterday's factor, the first thing to remember is mode () look at each element, class () see what is the whole,
The color matrix M is a matrix of 5*4, and the color matrix m in android is stored in a one-dimensional array m=[a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t] way.Each line of the matrix is:R[a b c D E]G[f G h i j]B[k l m N O]A[p Q R S t]The RGBA value of the image is stored in a 5*1 color component
Sparse Matrix and sparse matrix compression storage, Matrix
The unprocessed sparse matrix is actually a special two-dimensional array. Most elements in the array are 0 or other types of illegal values, and there are only a few non-zero elements.
To achieve compression and storage, only non-zero elements of the sparse
Android ColorMatrix brightness matrix contrast matrix black/white Matrix
Color matrix M is a 5*4 matrix. In android, the color matrix M is a one-dimensional array m = [a, B, c, d, e, f, g, h, I, j, k, l, m, n, o, p, q, r, s, t] st
The role of a model view projection matrix is to transform vertices from a local coordinate system into a canonical cube (Canonical view volnme). In summary, the model view projection matrix = projection matrix x view matrix X model matrix, the model
At first, I thought this question was a raw question about the rapid power of the matrix,
Later it was found that it would time out, and the super would exceed M = C ^ (N * n). This operation, and the C itself is a matrix of N * n, with N at the maximum of 1000.
But here is a clever place: the source of C is actually = a * B. A is a matrix of N * k, and B is a
This article mainly introduces the method of implementing the Serpentine matrix, the loopback matrix and the digital spiral matrix in PHP, and analyzes the concept of the Serpentine matrix, the loopback matrix and the digital spiral matr
step is x [A] [B] of the K power of the adjacent matrix.
This random discrete mathematics book should prove everything. I will not say much. [I have never proved it. I will not say anything about it?
Question C: POJ 3233
Http://blog.csdn.net/d891320478/article/details/8704903
I have written this question before.
D. ZOJ 3497
If you forget the meaning of the question, it seems to be giving a directed graph t
Android ColorMatrix brightness matrix contrast matrix black/white matrix, androidcolormatrix
Color matrix M is a 5*4 matrix. In android, the color matrix M is a one-dimensional array m = [a, B, c, d, e, f, g, h, I, j, k, l, m, n,
Title Address: POJ 3318Test instructions: There are 3 n*n matrix a,b,c, q AB is equal to C.Idea: The topic description is very simple, is to use matrix multiplication, but it is obvious that the time complexity of matrix multiplication is O (n^3), obviously timed out. How does that improve? is to use the compression matrix
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