一个几何引擎库，国内用的较少。功能类似CGAL、NURBS++、OCC等。麻雀虽小，功能却很强大。尤其适合固体实体的建模。

一个几何引擎库，国内用的较少。功能类似CGAL、NURBS++、OCC等。麻雀虽小，功能却很强大。尤其适合固体实体的建模。-A geometry engine library, domestic use less. Function similar to CGAL, NURBS++, OCC, etc.. Sparrows, though small, are extremely powerful. Particularly suita

/*************** interface ******************* STM32VET6(SPI1) NRF24L01 PC4 -> CSN PA5 -> SCK PA6 <- MISO PA7 -> MOSI PC5 <- CE PB0 <- IRQ *****************

官方下载的LPC4337固体库，包括IAR，keil，lpcxpresso(The official downloaded LPC4337 solid library, including IAR, KEIL, lpcxpresso)