converting radians to degrees examples

CoreGraphics.hCgaffinetransform rotation = cgaffinetransformmakerotation (m_pi_2);? [xxx settransform:rotation];? Oh just so simple two lines of code can be realized!By the way to record some constants, later use!#define M_e         2.718281828459045

CoreGraphics.hCgaffinetransform rotation = cgaffinetransformmakerotation (m_pi_2);? [xxx settransform:rotation];? Oh just so simple two lines of code can be realized!By the way to record some constants, later use!#define M_e         2.718281828459045

CoreGraphics.hCgaffinetransform rotation = cgaffinetransformmakerotation (m_pi_2);? [XXX settransform:rotation];Record some constants and use them later!#define M_e         2.71828182845904523536028747135266250    e? #define m_log2e     1.44269504088

This article is a small series of daily collection and collation of some JS classic examples, hereby share to the cloud Habitat Community Platform for your reference! Adding events across browsers Cross-browser Add event function addevent

Alex RoseUnity recently announced the introduction of additional 2D game support, adding box 2D physics and an Elf manager.But there are some tricks to keep in mind. Changing the image frame by frames is just the tip of an animated iceberg, and

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Mysql usage overview-from the basic to the stored procedure, I can see the Mysql usage summarized in the yard. I don't think it's all about me. All my stored procedures from login to advanced are involved,This part is common to me, but now I will

  The context canvas can be a window printer bitmap display filling filled with alpha (opacity) opacity 1 is opacity 0 transparency this attribute determines whether the following picture opaque opacity stroking draws a border in the rectangle