2023/10/12 10:58

DFRobot Monochrome_0.96_128x64_IIC_SPI_OLED_Display_SKU_DFR0650

https://wiki.dfrobot.com/Monochrome_0.96_128x64_IIC_SPI_OLED_Display_SKU_DFR0650

22/25

}

/*

！

* @brief Convert the yz in the three-dimensional coordinate system Oxyz into the v coordinate inside

* the two-dimensional coordinate system Ouv

* @param y in Oxyz

* @param z in Oxyz

* @return v in Ouv

*/

int OxyzToOv(double y,double z){

return (int)((y + 35) - z*0.35);

}

/*!

* @brief

Rotate the coordinates of all points of the entire 3D graphic around the Z axis

* @param

angle represents the angle to rotate

*

*

z rotation (z unchanged)

x3 = x2 * cosb - y1 * sinb

y3 = y1 * cosb + x2 * sinb

z3 = z2

*/

void rotate(double angle)

{

double rad, cosa, sina, Xn, Yn;

rad = angle * PI / 180;

cosa = cos(rad);

sina = sin(rad);

for (int i = 0; i < 4; i++)

{

Xn = (tetrahedron[i][0] * cosa) - (tetrahedron[i][1] * sina);

Yn = (tetrahedron[i][0] * sina) + (tetrahedron[i][1] * cosa);

//Store converted coordinates into an array of coordinates

//Because it rotates around the Z-axis, the coordinates of the point z-axis remain unchanged

tetrahedron[i][0] = Xn;

tetrahedron[i][1] = Yn;