Text size convertation from point size to pixel size and vice versa

points_to_pixels.cpp

static inline float PointsToPixels(float points, float dpi)
{
    // 1 pt = 0.352778 mm
    float mm = 0.352778f * points;
    // 1 inch = 25.4 mm
    float inches = mm / 25.4f;
    return dpi * inches;
}
static inline float PixelsToPoints(float pixels, float dpi)
{
    float inches = pixels / dpi;
    float mm = inches * 25.4f;
    return mm / 0.352778f;
}