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add some comments, order code

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TT 2016-11-02 21:08:33 +09:00
parent 6ff0acecdf
commit bc6ce2963c
4 changed files with 67 additions and 27 deletions
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46
plot.c
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@ -12,9 +12,6 @@ void draw_frequencies(void);
static inline void force_set_markmap(void);
void frequency_string(char *buf, size_t len, uint32_t freq);
uint16_t markmap[2][8];
uint16_t current_mappage = 0;
#define OFFSETX 15
#define OFFSETY 0
#define WIDTH 291
@ -31,6 +28,9 @@ trace_t trace[TRACES_MAX] = {
};
#define CELLWIDTH 32
#define CELLHEIGHT 32
/*
* CELL_X0[27:31] cell position
* CELL_Y0[22:26]
@ -53,8 +53,17 @@ uint32_t trace_index[TRACES_MAX][101];
#define CELL_P(i, x, y) (((((x)&0x03e0UL)<<22) | (((y)&0x03e0UL)<<17)) == ((i)&0xffc00000UL))
#define CELLWIDTH 32
#define CELLHEIGHT 32
/* indicate dirty cells */
uint16_t markmap[2][8];
uint16_t current_mappage = 0;
marker_t markers[4] = {
{ 1, 30 }, { 0, 40 }, { 0, 60 }, { 0, 80 }
};
int active_marker = 0;
int32_t fstart = 0;
@ -64,7 +73,6 @@ int32_t fgrid = 50000000;
int grid_offset;
int grid_width;
void set_sweep(int32_t start, int stop)
{
int32_t gdigit = 100000000;
@ -105,6 +113,11 @@ circle_inout(int x, int y, int r)
return 0;
}
#define POLAR_CENTER_X 146
#define POLAR_CENTER_Y 116
#define POLAR_RADIUS 116
int
smith_grid(int x, int y)
{
@ -194,22 +207,33 @@ draw_on_strut(int v0, int d, int color)
}
/*
* calculate log10(abs(gamma))
*/
float logmag(float *v)
{
return log10f(v[0]*v[0] + v[1]*v[1]);
}
/*
* calculate phase[-2:2] of coefficient
*/
float phase(float *v)
{
return 2 * atan2f(v[1], v[0]) / M_PI;
}
/*
* calculate abs(gamma) * 8
*/
float linear(float *v)
{
return - sqrtf(v[0]*v[0] + v[1]*v[1]) * 8;
}
/*
* calculate vswr; (1+gamma)/(1-gamma)
*/
float swr(float *v)
{
float x = sqrtf(v[0]*v[0] + v[1]*v[1]);
@ -394,6 +418,8 @@ mark_cells_from_index(void)
int t;
/* mark cells between each neighber points */
for (t = 0; t < TRACES_MAX; t++) {
if (!trace[t].enabled)
continue;
int x0 = CELL_X(trace_index[t][0]);
int y0 = CELL_Y(trace_index[t][0]);
int m0 = x0 >> 5;
@ -595,12 +621,6 @@ draw_marker(int w, int h, int x, int y, int c, int ch)
}
}
marker_t markers[4] = {
{ 1, 30 }, { 0, 40 }, { 0, 60 }, { 0, 80 }
};
int active_marker = 0;
void
cell_draw_markers(int m, int n, int w, int h)
{