transformation

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At will scaling and rotation in a 2D space

I\'m trying to write a graphical program in C++ with QT where users can scale and rotate objects with the mouse (just like inkscape or CorelDraw does), however after many months trying to make it happ[详细]

2023-01-12 11:18 分类：问答
Pivot / Crosstab Query in Oracle 10g (Dynamic column number)

I have this table view UserNameProductNumberPurchaces ------------------------------ \'John Doe\'\'Chair\'4[详细]

2023-01-11 06:12 分类：问答
Find and replace entire HTML nodes with Nokogiri

开发者_高级运维i have an HTML, that should be transformed, having some tags replaced with another tags.[详细]

2023-01-10 19:14 分类：问答
Migrating data from MSSQL to MySQL

I have a few tables in SQL Server Express that contain data w开发者_如何学编程ith high characters - ex: Häagen-Dazs[详细]

2023-01-10 10:27 分类：问答
Is the WPF Matrix3D.Rotate() function innacurate?

I\'m currently trying to wrap my head around WPF, and I\'m at the stage of converting between coordinate spaces with Matrix3D structures.[详细]

2023-01-08 07:49 分类：问答
Move control along path

I want to move a control along a path in WPF with a transformation. The movement should be smooth and the path is like a sine curve. Currently no 开发者_开发百科idea how to start...[详细]

2023-01-08 05:56 分类：问答
Scaling a polygon toward an edge?

I know that to scale verticies I simply have to multiply by a scale factor. But I noticed that most vector drawing applications show the shapes bounding box and by dragging one of the edge it will sca[详细]

2023-01-07 12:52 分类：问答
Xsl transformation question

Next question: I have \"InputDoc\" xml document and xslt file in order to transform into other \"OutputDoc\" xml document.[详细]

2023-01-06 23:09 分类：问答
how do I convert from one cartesian system to another

2D problem: I measure the position of the 3 ends of a triangle in a cartesian system. Now i move the system (triangle) to another cartesian system and measure the position of just two ends.[详细]

2023-01-06 20:00 分类：问答
parsing date and time

CurrentlyIn my source file, i am getting date and time values like below. 2010-07-06T19:06:47 i want to 开发者_运维百科put date in one variable and time in another one. Please let me know how to do[详细]

2023-01-06 17:06 分类：问答