void svg_write_legend(struct plot *plot)
{
int legend_line_x = axis_x_off(graph_width) + legend_x_off;
int legend_line_y = axis_y_off(graph_height) + legend_y_off;
int i;
if (plot->legend_index == 0)
return;
snprintf(line, line_len, "<rect x=\"%d\" y=\"%d\" width=\"%d\" height=\"%d\" "
"fill=\"white\" filter=\"url(#shadow)\"/>\n",
legend_line_x - 15,
legend_line_y - 12,
legend_width,
plot->legend_index * legend_font_size + legend_font_size / 2 + 12);
write_check(plot->fd, line, strlen(line));
for (i = 0; i < plot->legend_index; i++) {
write_check(plot->fd, plot->legend_lines[i],
strlen(plot->legend_lines[i]));
free(plot->legend_lines[i]);
}
free(plot->legend_lines);
plot->legend_lines = NULL;
plot->legend_index = 0;
}
/* Description: This functions determines whether the camera should send a
continuous stream of packets or just one packet.
Parameters: fd: serial port file descriptor
on: if on == 1, only one packet is send
if on == 0, a continuous stream of packets is send
Returns: 1: If the command was successfully sent to the camera
0: Otherwise
*/
int poll_mode(int fd, int on)
{
if(on)
return write_check(fd, "PM 1\r", 5);
else
return write_check(fd, "PM 0\r", 5);
}
/*
* create evenly spread out ticks along the y axis.
* The ticks are labeled as it goes
*/
void set_yticks(struct plot *plot, int num_ticks, int first, int last, char *units)
{
int pixels_per_tick = graph_height / num_ticks;
int step = (last - first) / num_ticks;
int i;
int tick_y = 0;
int text_x = axis_x() - 6;
int tick_x = axis_x();
char *anchor = "end";
for (i = 0; i < num_ticks; i++) {
if (i != 0) {
snprintf(line, line_len, "<line x1=\"%d\" y1=\"%d\" x2=\"%d\" y2=\"%d\" "
"style=\"stroke:lightgray;stroke-width:2;stroke-dasharray:9,12;\"/>\n",
tick_x, axis_y_off(tick_y),
axis_x_off(graph_width), axis_y_off(tick_y));
write_check(plot->fd, line, strlen(line));
}
snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" "
"fill=\"black\" style=\"text-anchor: %s\">%d%s</text>\n",
text_x,
axis_y_off(tick_y - tick_font_size / 2),
font_family, tick_font_size, anchor, first + step * i, units);
write_check(plot->fd, line, strlen(line));
tick_y += pixels_per_tick;
}
snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" "
"fill=\"black\" style=\"text-anchor: %s\">%d%s</text>\n",
text_x, axis_y_off(graph_height), font_family, tick_font_size, anchor, last, units);
write_check(plot->fd, line, strlen(line));
}
/*
* this draws a backing rectangle for the plot and it
* also creates a new svg element so our offsets can
* be relative to this one plot.
*/
void setup_axis(struct plot *plot)
{
int len;
int fd = plot->fd;
int bump_height = tick_font_size * 3 + axis_label_font_size;
int local_legend_width = legend_width;
if (plot->no_legend)
local_legend_width = 0;
plot->total_width = axis_x_off(graph_width) + graph_left_pad / 2 + local_legend_width;
plot->total_height = axis_y() + tick_label_pad + tick_font_size;
if (plot->add_xlabel)
plot->total_height += bump_height;
/* backing rect */
snprintf(line, line_len, "<rect x=\"%d\" y=\"%d\" width=\"%d\" "
"height=\"%d\" fill=\"white\" stroke=\"none\"/>",
plot->start_x_offset,
plot->start_y_offset, plot->total_width + 40,
plot->total_height + 20);
len = strlen(line);
write_check(fd, line, len);
snprintf(line, line_len, "<rect x=\"%d\" y=\"%d\" width=\"%d\" "
"filter=\"url(#shadow)\" "
"height=\"%d\" fill=\"white\" stroke=\"none\"/>",
plot->start_x_offset + 15,
plot->start_y_offset, plot->total_width, plot->total_height);
len = strlen(line);
write_check(fd, line, len);
plot->total_height += 20;
plot->total_width += 20;
if (plot->total_height + plot->start_y_offset > final_height)
final_height = plot->total_height + plot->start_y_offset;
if (plot->start_x_offset + plot->total_width + 40 > final_width)
final_width = plot->start_x_offset + plot->total_width + 40;
/* create an svg object for all our coords to be relative against */
snprintf(line, line_len, "<svg x=\"%d\" y=\"%d\">\n", plot->start_x_offset, plot->start_y_offset);
write_check(fd, line, strlen(line));
snprintf(line, 1024, "<path d=\"M%d %d h %d V %d H %d Z\" stroke=\"black\" stroke-width=\"2\" fill=\"none\"/>\n",
axis_x(), axis_y(),
graph_width + graph_inner_x_margin * 2, axis_y_off(graph_height) - graph_inner_y_margin,
axis_x());
len = strlen(line);
write_check(fd, line, len);
}
SYSCALL_DEFINE1(orientlock_write, struct orientation_range *, orient)
{
int got_lock = 0;
spin_lock(&system_call_lock);
got_lock = write_check(orient);
if (!got_lock) {
spin_unlock(&system_call_lock);
wait_event_interruptible(write_wait_queue, write_check(orient));
} else
spin_unlock(&system_call_lock);
return got_lock;
}
void svg_write_time_line(struct plot *plot, int col)
{
snprintf(line, line_len, "<line x1=\"%d\" y1=\"%d\" x2=\"%d\" y2=\"%d\" "
"style=\"stroke:black;stroke-width:2;\"/>\n",
axis_x_off(col), axis_y_off(0),
axis_x_off(col), axis_y_off(graph_height));
write_check(plot->fd, line, strlen(line));
}
static void svg_add_io(int fd, double row, double col, double width, double height, char *color)
{
float rx = 0;
snprintf(line, line_len, "<rect x=\"%.2f\" y=\"%.2f\" width=\"%.1f\" height=\"%.1f\" "
"rx=\"%.2f\" style=\"stroke:none;fill:%s;stroke-width:0\"/>\n",
axis_x_off_double(col), axis_y_off_double(row), width, height, rx, color);
write_check(fd, line, strlen(line));
}
/*
* this draws a backing rectangle for the plot and it
* also creates a new svg element so our offsets can
* be relative to this one plot.
*/
void setup_axis_spindle(struct plot *plot)
{
int len;
int fd = plot->fd;
int bump_height = tick_font_size * 3 + axis_label_font_size;
legend_x_off = -60;
plot->total_width = axis_x_off(graph_width) + legend_width;
plot->total_height = axis_y() + tick_label_pad + tick_font_size;
if (plot->add_xlabel)
plot->total_height += bump_height;
/* backing rect */
snprintf(line, line_len, "<rect x=\"%d\" y=\"%d\" width=\"%d\" "
"height=\"%d\" fill=\"white\" stroke=\"none\"/>",
plot->start_x_offset,
plot->start_y_offset, plot->total_width + 10,
plot->total_height + 20);
len = strlen(line);
write_check(fd, line, len);
snprintf(line, line_len, "<rect x=\"%d\" y=\"%d\" width=\"%d\" "
"filter=\"url(#shadow)\" "
"height=\"%d\" fill=\"white\" stroke=\"none\"/>",
plot->start_x_offset + 15,
plot->start_y_offset, plot->total_width - 30,
plot->total_height);
len = strlen(line);
write_check(fd, line, len);
plot->total_height += 20;
if (plot->total_height + plot->start_y_offset > final_height)
final_height = plot->total_height + plot->start_y_offset;
if (plot->start_x_offset + plot->total_width + 40 > final_width)
final_width = plot->start_x_offset + plot->total_width + 40;
/* create an svg object for all our coords to be relative against */
snprintf(line, line_len, "<svg x=\"%d\" y=\"%d\">\n", plot->start_x_offset, plot->start_y_offset);
write_check(fd, line, strlen(line));
}
/*
* call-seq:
*
* io.kgio_syssend(str, flags) -> nil, String or :wait_writable
*
* Returns nil if the write was completed in full.
*
* Returns a String containing the unwritten portion if EAGAIN
* was encountered, but some portion was successfully written.
*
* Returns :wait_writable if EAGAIN is encountered and nothing
* was written.
*
* This method is only available on Ruby 1.9.3 or later.
*/
static VALUE kgio_syssend(VALUE io, VALUE str, VALUE flags)
{
struct wr_args a;
long n;
a.flags = NUM2INT(flags);
prepare_write(&a, io, str);
if (a.flags & MY_MSG_DONTWAIT) {
do {
n = (long)send(a.fd, a.ptr, a.len, a.flags);
} while (write_check(&a, n, "send", 0) != 0);
} else {
do {
n = (long)rb_thread_io_blocking_region(
nogvl_send, &a, a.fd);
} while (write_check(&a, n, "send", 0) != 0);
}
return a.buf;
}
void vulkan_buffer::write(const compute_queue& cqueue, const void* src,
const size_t size_, const size_t offset) {
if(buffer == nullptr) return;
const size_t write_size = (size_ == 0 ? size : size_);
if(!write_check(size, write_size, offset, flags)) return;
GUARD(lock);
write_memory_data(cqueue, src, write_size, offset, 0, "failed to write buffer");
}
int close_plot_file(struct plot *plot)
{
int ret;
ret = lseek(plot->fd, 0, SEEK_SET);
if (ret == (off_t)-1) {
perror("seek");
exit(1);
}
final_width = ((final_width + 1) / 2) * 2;
final_height = ((final_height + 1) / 2) * 2;
snprintf(line, line_len, "<svg xmlns=\"http://www.w3.org/2000/svg\" "
"width=\"%d\" height=\"%d\">\n",
final_width, final_height);
write_check(plot->fd, line, strlen(line));
snprintf(line, line_len, "<rect x=\"0\" y=\"0\" width=\"%d\" "
"height=\"%d\" fill=\"white\"/>\n", final_width, final_height);
write_check(plot->fd, line, strlen(line));
close(plot->fd);
plot->fd = 0;
return 0;
}
void set_plot_label(struct plot *plot, char *label)
{
int len;
int fd = plot->fd;
snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" "
"font-size=\"%d\" fill=\"black\" style=\"text-anchor: %s\">%s</text>\n",
axis_x() + graph_width / 2,
plot_label_height / 2,
font_family, plot_label_font_size, "middle", label);
len = strlen(line);
write_check(fd, line, len);
}
void DTemperature::okBtn_click()
{
int temp=tempLE->text().toDouble()*10;
int time=timeLE->text().toInt();
int temp_low=temp%256;
int temp_hign=temp/256;
int time_low=time%256;
int time_hign=time/256;
int temp_addr=26+combo->currentIndex()*2;
int time_addr=27+combo->currentIndex()*2;
int check_low,check_hign;
write_check(temp_addr,temp,0x01,&check_low,&check_hign);
QByteArray array_temp,array_time;
array_temp.append(0x81);
array_temp.append(0x81);
array_temp.append(0x43);
array_temp.append(temp_addr);
array_temp.append(temp_low);
array_temp.append(temp_hign);
array_temp.append(check_low);
array_temp.append(check_hign);
write_check(time_addr,time,0x01,&check_low,&check_hign);
array_time.append(0x81);
array_time.append(0x81);
array_time.append(0x43);
array_time.append(time_addr);
array_time.append(time_low);
array_time.append(time_hign);
array_time.append(check_low);
array_time.append(check_hign);
emit tempAndTime(array_temp);
QTime dieTime = QTime::currentTime().addMSecs(150);
while( QTime::currentTime() < dieTime )
QCoreApplication::processEvents(QEventLoop::AllEvents, 100);
emit tempAndTime(array_time);
}
/* Description: This functions sets the servo position given the servo number
and the angle (note: angle = 0 denotes servo position = 128
in terms of camera's values)
Parameters: number[i] = c;fd: serial port file descriptor
servo_num: the servo which we are setting the position
I am using 0:pan 1:tilt
Returns: 1: If the command was successfully sent to the camera
0: Otherwise
*/
int set_servo_position(int fd, int servo_num, int angle)
{
// change the angle into camera's format
int position = ZERO_POSITION + angle;
// for servo position. I am using angle 0
char comm[10];
// corresponding to the default servo pos. 128
int value[] = {servo_num, position};
// generate the command using the values
make_command("SV ", value, sizeof(value)/sizeof(int), comm);
printf("servo %d new position: %d\n", servo_num, angle);
return write_check(fd, comm, 5); // write the command to the camera
}
static VALUE my_write(VALUE io, VALUE str, int io_wait)
{
struct io_args a;
long n;
prepare_write(&a, io, str);
set_nonblocking(a.fd);
retry:
n = (long)write(a.fd, a.ptr, a.len);
if (write_check(&a, n, "write", io_wait) != 0)
goto retry;
return a.buf;
}
/* Description: The function enables/disables automatic servoing
Parameters: fd: serial port handler, on: determines whethere to enable(on=1)
or disable(on=0)
Returns: 0: if the camera fails to write command 1: otherwise
*/
int auto_servoing(int fd, int on)
{
// Enabling Auto Servoing Mode for both servos
if(on)
{
if(!write_check(fd, "SM 15\r", 5))
{
printf("CMUCAM II ERROR: Enabling auto-servo failed.\n");
return 0;
}
return 1;
}
else
{
if(!write_check(fd, "SM 0\r", 5))
{
printf("CMUCAM II ERROR: Disabling auto-servo faild.\n");
return 0;
}
return 1;
}
}
/* Description: This functions starts to Track a Color. It takes in the minimum
and maximum RGB values and outputs a type T packet. This packet
by default returns the middle mass x and y coordinates, the
bounding box, the number of pixles tracked, and a confidence
values.
cc: the min & max RGB values of the blob to be tracked.
*/
void track_blob( int fd, color_config cc )
{
char cmd[28];
int value[] = {cc.rmin, cc.rmax, cc.gmin, cc.gmax, cc.bmin, cc.bmax};
range = cc;
make_command("TC ", value, sizeof(value)/sizeof(int), cmd);
if(!write_check(fd, cmd, 4))
{
printf("ERROR; track color failed.\n");
return;
}
}
/* Description: This function gets an image from the camera using the
specified channel as a filter.
Parameters: fd: serial port handler, chan_num: the channel number
Returns: the image as an F packet
*/
int read_image (int fd, int chan_num, packet_f *fpacket)
{
char fpack_chars [F_PACKET_LENGTH];
switch (chan_num)
{
case 0:
{
write_check (fd, "SF 0\r", 4);
break;
}
case 1:
{
write_check (fd, "SF 1\r", 4);
break;
}
case 2:
{
write_check (fd, "SF 2\r", 4);
break;
}
case -1:
{
write_check (fd, "SF \r", 4);
break;
}
default:
{
printf ("Cmucam2: invalid channel number!\n");
break;
}
}
if (read_f_packet (fd, fpack_chars) != 0)
return -1;
return set_f_packet (fpacket, fpack_chars, chan_num);
}
/* draw a plot title. This should be done only once,
* and it bumps the plot width/height numbers by
* what it draws.
*
* Call this before setting up the first axis
*/
void set_plot_title(struct plot *plot, char *title)
{
int len;
int fd = plot->fd;
plot->total_height = plot_title_height;
plot->total_width = axis_x_off(graph_width) + graph_left_pad / 2 + legend_width;
/* backing rect */
snprintf(line, line_len, "<rect x=\"0\" y=\"%d\" width=\"%d\" height=\"%d\" fill=\"white\" stroke=\"none\"/>",
plot->start_y_offset, plot->total_width + 40, plot_title_height + 20);
len = strlen(line);
write_check(fd, line, len);
snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" "
"font-weight=\"bold\" fill=\"black\" style=\"text-anchor: %s\">%s</text>\n",
axis_x_off(graph_width / 2),
plot->start_y_offset + plot_title_height / 2,
font_family, plot_title_font_size, "middle", title);
plot->start_y_offset += plot_title_height;
len = strlen(line);
write_check(fd, line, len);
}
/*
* This method behaves like Kgio::PipeMethods#kgio_write, except
* it will use send(2) with the MSG_DONTWAIT flag on sockets to
* avoid unnecessary calls to fcntl(2).
*/
static VALUE my_send(VALUE io, VALUE str, int io_wait)
{
struct io_args a;
long n;
prepare_write(&a, io, str);
retry:
n = (long)send(a.fd, a.ptr, a.len, MSG_DONTWAIT);
if (write_check(&a, n, "send", io_wait) != 0)
goto retry;
if (TYPE(a.buf) != T_SYMBOL)
kgio_autopush_send(io);
return a.buf;
}
/* Description: This function gets the position of the specified servo.
Parameters: fd: serial port handler, servo_num: the servo number whose size
is required
Returns: the position of the servo
*/
int get_servo_position(int fd, int servo_num)
{
int servo_position;
int i;
char number[3];
char c = 0;
if(servo_num) // set position of servo 1
write_check(fd, "GS 1\r", 4);
else // set position of servo 0
write_check(fd, "GS 0\r", 4);
for(i = 0; 1; i++)
{
read(fd, &c, 1);
if(c == '\r')
break;
number[i] = c;
}
read(fd, &c, 1); // read the : at the end
servo_position = atoi(number);
return servo_position - ZERO_POSITION;
}
void DTemperature::stop_click()
{
int check_low,check_hign;
write_check(0x15,0x0C,0x01,&check_low,&check_hign);
int sz=0;
QByteArray array_temp;
array_temp.append(0x81);
array_temp.append(0x81);
array_temp.append(0x43);
array_temp.append(0x15);
array_temp.append(0x0C);
array_temp.append(sz);
array_temp.append(check_low);
array_temp.append(check_hign);
emit tempAndTime(array_temp);
}
void set_ylabel(struct plot *plot, char *label)
{
int len;
int fd = plot->fd;
snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" "
"transform=\"rotate(-90 %d %d)\" font-weight=\"bold\" "
"font-size=\"%d\" fill=\"black\" style=\"text-anchor: %s\">%s</text>\n",
graph_left_pad / 2 - axis_label_font_size,
axis_y_off(graph_height / 2),
font_family,
graph_left_pad / 2 - axis_label_font_size,
(int)axis_y_off(graph_height / 2),
axis_label_font_size, "middle", label);
len = strlen(line);
write_check(fd, line, len);
}
void write_svg_header(int fd)
{
char *spaces = " \n";
char *header = "<svg xmlns=\"http://www.w3.org/2000/svg\">\n";
char *filter1 ="<filter id=\"shadow\">\n "
"<feOffset result=\"offOut\" in=\"SourceAlpha\" dx=\"4\" dy=\"4\" />\n "
"<feGaussianBlur result=\"blurOut\" in=\"offOut\" stdDeviation=\"2\" />\n "
"<feBlend in=\"SourceGraphic\" in2=\"blurOut\" mode=\"normal\" />\n "
"</filter>\n";
char *filter2 ="<filter id=\"textshadow\" x=\"0\" y=\"0\" width=\"200%\" height=\"200%\">\n "
"<feOffset result=\"offOut\" in=\"SourceAlpha\" dx=\"1\" dy=\"1\" />\n "
"<feGaussianBlur result=\"blurOut\" in=\"offOut\" stdDeviation=\"1.5\" />\n "
"<feBlend in=\"SourceGraphic\" in2=\"blurOut\" mode=\"normal\" />\n "
"</filter>\n";
char *filter3 ="<filter id=\"labelshadow\" x=\"0\" y=\"0\" width=\"200%\" height=\"200%\">\n "
"<feOffset result=\"offOut\" in=\"SourceGraphic\" dx=\"3\" dy=\"3\" />\n "
"<feColorMatrix result=\"matrixOut\" in=\"offOut\" type=\"matrix\" "
"values=\"0.2 0 0 0 0 0 0.2 0 0 0 0 0 0.2 0 0 0 0 0 1 0\" /> "
"<feGaussianBlur result=\"blurOut\" in=\"offOut\" stdDeviation=\"2\" />\n "
"<feBlend in=\"SourceGraphic\" in2=\"blurOut\" mode=\"normal\" />\n "
"</filter>\n";
char *defs_start = "<defs>\n";
char *defs_close = "</defs>\n";
final_width = 0;
final_height = 0;
write_check(fd, header, strlen(header));
/* write a bunch of spaces so we can stuff in the width and height later */
write_check(fd, spaces, strlen(spaces));
write_check(fd, spaces, strlen(spaces));
write_check(fd, spaces, strlen(spaces));
write_check(fd, defs_start, strlen(defs_start));
write_check(fd, filter1, strlen(filter1));
write_check(fd, filter2, strlen(filter2));
write_check(fd, filter3, strlen(filter3));
write_check(fd, defs_close, strlen(defs_close));
}
int set_imager_config(int fd, imager_config ic)
{
int value[8], size = 0; // The numbers used in the command:
char command[26]; // ex. CR 5 255 19 33
if(ic.contrast != -1) // If ther is a change set the values
{
value[size++] = CONTRAST;
value[size++] = ic.contrast;
}
if(ic.brightness != -1)
{
value[size++] = BRIGHTNESS;
value[size++] = ic.brightness;
}
if(ic.colormode != -1)
{
value[size++] = COLORMODE;
if(ic.colormode == 0)
value[size++] = RGB_AWT_OFF;
if(ic.colormode == 1)
value[size++] = RGB_AWT_ON;
if(ic.colormode == 2)
value[size++] = YCRCB_AWT_OFF;
if(ic.colormode == 3)
value[size++] = YCRCB_AWT_ON;
}
if(ic.autogain != -1)
{
value[size++] = AUTOGAIN;
if(ic.autogain == 0)
value[size++] = AUTOGAIN_OFF;
if(ic.autogain == 1)
value[size++] = AUTOGAIN_ON;
}
// Put the values into camera's command format:
// ex. CR 6 105 18 44
make_command("CR ", value, size, command);
return write_check(fd, command, 5); // send the command to the camera
}
int svg_io_graph_movie_array_spindle(struct plot *plot, struct pid_plot_history *pph)
{
double cell_index;
int i;
int num_circles = 0;
double cells_per_circle;
double circle_num;
double degrees_per_cell;
double rot;
double center_x;
double center_y;
double graph_width_extra = graph_width + graph_circle_extra;
double graph_height_extra = graph_height + graph_circle_extra;
double radius;;
if (graph_width_extra > graph_height_extra)
graph_width_extra = graph_height_extra;
if (graph_width_extra < graph_height_extra)
graph_height_extra = graph_width_extra;
radius = graph_width_extra;
center_x = axis_x_off_double(graph_width_extra / 2);
center_y = axis_y_off_double(graph_height_extra / 2);
snprintf(line, line_len, "<g transform=\"rotate(%.4f, %.2f, %.2f)\"> "
"<circle cx=\"%.2f\" cy=\"%.2f\" "
"stroke=\"black\" stroke-width=\"6\" "
"r=\"%.2f\" fill=\"none\"/>\n",
spindle_steps * 1.2, center_x, center_y, center_x, center_y, graph_width_extra / 2);
write_check(plot->fd, line, strlen(line));
snprintf(line, line_len, "<circle cx=\"%.2f\" cy=\"%.2f\" "
"stroke=\"none\" fill=\"red\" r=\"%.2f\"/>\n</g>\n",
axis_x_off_double(graph_width_extra), center_y, 4.5);
write_check(plot->fd, line, strlen(line));
spindle_steps += 0.01;
radius = floor(radius / 2);
num_circles = radius / 4 - 3;
cells_per_circle = pph->history_max / num_circles;
degrees_per_cell = 360 / cells_per_circle;
for (i = 0; i < pph->num_used; i++) {
cell_index = pph->history[i];
circle_num = floor(cell_index / cells_per_circle);
rot = cell_index - circle_num * cells_per_circle;
circle_num = num_circles - circle_num;
radius = circle_num * 4;
rot = rot * degrees_per_cell;
rot -= spindle_steps;
snprintf(line, line_len, "<path transform=\"rotate(%.4f, %.2f, %.2f)\" "
"d=\"M %.2f %.2f a %.2f %.2f 0 0 1 0 5\" "
"stroke=\"%s\" stroke-width=\"4\"/>\n",
-rot, center_x, center_y,
axis_x_off_double(graph_width_extra / 2 + radius) + 8, center_y,
radius, radius, pph->color);
write_check(plot->fd, line, strlen(line));
}
return 0;
}
int power(int fd, int on)
{
if(on)
return write_check(fd, "CP 1\r", 5);
return write_check(fd, "CP 0\r", 5);
}
int svg_line_graph(struct plot *plot, struct graph_line_data *gld, char *color, int thresh1, int thresh2)
{
unsigned int i;
double val;
double avg;
int rolling;
int fd = plot->fd;
char *start = "<path d=\"";
double yscale = ((double)gld->max) / graph_height;
double xscale = (double)(gld->max_seconds - gld->min_seconds - 1) / graph_width;
char c = 'M';
double x;
int printed_header = 0;
int printed_lines = 0;
if (thresh1 && thresh2)
rolling = 0;
else if (rolling_avg_secs)
rolling = rolling_avg_secs;
else
rolling = (gld->stop_seconds - gld->min_seconds) / 25;
for (i = gld->min_seconds; i < gld->stop_seconds; i++) {
avg = rolling_avg(gld->data, i, rolling);
if (yscale == 0)
val = 0;
else
val = avg / yscale;
if (val > graph_height)
val = graph_height;
if (val < 0)
val = 0;
x = (double)(i - gld->min_seconds) / xscale;
if (!thresh1 && !thresh2) {
if (!printed_header) {
write_check(fd, start, strlen(start));
printed_header = 1;
}
/* in full line mode, everything in the graph is connected */
snprintf(line, line_len, "%c %d %d ", c, axis_x_off(x), axis_y_off(val));
c = 'L';
write_check(fd, line, strlen(line));
printed_lines = 1;
} else if (avg > thresh1 || avg > thresh2) {
int len = 10;
if (!printed_header) {
write_check(fd, start, strlen(start));
printed_header = 1;
}
/* otherwise, we just print a bar up there to show this one data point */
if (i >= gld->stop_seconds - 2)
len = -10;
/*
* we don't use the rolling averages here to show high
* points in the data
*/
snprintf(line, line_len, "M %d %d h %d ", axis_x_off(x),
axis_y_off(val), len);
write_check(fd, line, strlen(line));
printed_lines = 1;
}
}
if (printed_lines) {
snprintf(line, line_len, "\" fill=\"none\" stroke=\"%s\" stroke-width=\"2\"/>\n", color);
write_check(fd, line, strlen(line));
}
if (plot->timeline)
svg_write_time_line(plot, plot->timeline);
return 0;
}
/*
* create evenly spread out ticks along the xaxis. if tick only is set
* this just makes the ticks, otherwise it labels each tick as it goes
*/
void set_xticks(struct plot *plot, int num_ticks, int first, int last)
{
int pixels_per_tick;
double step;
int i;
int tick_y = axis_y_off(graph_tick_len) + graph_inner_y_margin;
int tick_x = axis_x();
int tick_only = plot->add_xlabel == 0;
int text_y = axis_y() + tick_label_pad;
char *middle = "middle";
char *start = "start";
step = find_step(first, last, num_ticks);
/*
* We don't want last two ticks to be too close together so subtract
* 20% of the step from the interval
*/
num_ticks = (double)(last - first - step) / step + 1;
pixels_per_tick = graph_width * step / (double)(last - first);
for (i = 0; i < num_ticks; i++) {
char *anchor;
if (i != 0) {
snprintf(line, line_len, "<rect x=\"%d\" y=\"%d\" width=\"2\" height=\"%d\" style=\"stroke:none;fill:black;\"/>\n",
tick_x, tick_y, graph_tick_len);
write_check(plot->fd, line, strlen(line));
anchor = middle;
} else {
anchor = start;
}
if (!tick_only) {
if (step >= 1)
snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" "
"fill=\"black\" style=\"text-anchor: %s\">%d</text>\n",
tick_x, text_y, font_family, tick_font_size, anchor,
(int)(first + step * i));
else
snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" "
"fill=\"black\" style=\"text-anchor: %s\">%.2f</text>\n",
tick_x, text_y, font_family, tick_font_size, anchor,
first + step * i);
write_check(plot->fd, line, strlen(line));
}
tick_x += pixels_per_tick;
}
if (!tick_only) {
if (step >= 1)
snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" "
"fill=\"black\" style=\"text-anchor: middle\">%d</text>\n",
axis_x_off(graph_width - 2),
text_y, font_family, tick_font_size, last);
else
snprintf(line, line_len, "<text x=\"%d\" y=\"%d\" font-family=\"%s\" font-size=\"%d\" "
"fill=\"black\" style=\"text-anchor: middle\">%.2f</text>\n",
axis_x_off(graph_width - 2),
text_y, font_family, tick_font_size, (double)last);
write_check(plot->fd, line, strlen(line));
}
}
static void close_svg(int fd)
{
char *close_line = "</svg>\n";
write_check(fd, close_line, strlen(close_line));
}