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Consolidate cluster state into cluster object

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This commit is contained in:
XANTRONIX 2019-06-09 16:05:06 -05:00
parent d167b58b24
commit 7cd217bef4
3 changed files with 26 additions and 25 deletions
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21
examples/cluster.c
View file

@ -10,33 +10,30 @@
#include <hexagram/window.h>
#include <hexagram/cluster.h>
static hexagram_cluster_state state = {
0, 0, 0, 0
};
static void cluster_update(struct can_frame *frame) {
static void cluster_update(hexagram_cluster *cluster,
struct can_frame *frame) {
switch (frame->can_id) {
case 0x280: {
state.rpm = 0.25 *
cluster->state.rpm = 0.25 *
(double)(frame->data[2] | (frame->data[3] << 8));
break;
}
case 0x288: {
state.temp = (double)(frame->data[1] - 48 * 0.75);
cluster->state.temp = (double)(frame->data[1] - 48 * 0.75);
break;
}
case 0x320: {
state.fuel = (double)(frame->data[2] & 0xf) / 16.0;
cluster->state.fuel = (double)(frame->data[2] & 0xf) / 16.0;
break;
}
case 0x5a0: {
state.rps = 0.001 * (double)(frame->data[1]
cluster->state.rps = 0.001 * (double)(frame->data[1]
| (frame->data[2] << 8));
break;
@ -136,7 +133,7 @@ int main(int argc, char **argv) {
case MapNotify:
case Expose:
hexagram_window_refresh_bg(window);
hexagram_cluster_draw_fg(cluster, fg, &state);
hexagram_cluster_draw_fg(cluster, fg);
hexagram_window_swap_buffer(window);
break;
@ -168,14 +165,14 @@ int main(int argc, char **argv) {
case 0x5a0: {
struct timeval now;
cluster_update(&frame);
cluster_update(cluster, &frame);
(void)gettimeofday(&now, NULL);
if (now.tv_sec - last.tv_sec
|| now.tv_usec - last.tv_usec > 16666) {
hexagram_window_refresh_bg(window);
hexagram_cluster_draw_fg(cluster, fg, &state);
hexagram_cluster_draw_fg(cluster, fg);
hexagram_window_swap_buffer(window);
(void)memcpy(&last, &now, sizeof(now));

11
include/hexagram/cluster.h
View file

@ -9,10 +9,6 @@
#include <hexagram/fuel.h>
#include <hexagram/mfd.h>
typedef struct _hexagram_cluster_state {
double rpm, rps, temp, fuel;
} hexagram_cluster_state;
typedef struct _hexagram_cluster {
hexagram_tacho tacho;
hexagram_speedo speedo;
@ -22,6 +18,10 @@ typedef struct _hexagram_cluster {
double width,
height;
struct {
double rpm, rps, temp, fuel;
} state;
} hexagram_cluster;
hexagram_cluster *hexagram_cluster_new(double width,
@ -31,7 +31,6 @@ void hexagram_cluster_draw_bg(hexagram_cluster *cluster,
cairo_t *cr);
void hexagram_cluster_draw_fg(hexagram_cluster *cluster,
cairo_t *cr,
hexagram_cluster_state *state);
cairo_t *cr);
#endif /* _HEXAGRAM_CLUSTER_H */

17
src/cluster.c
View file

@ -1,4 +1,5 @@
#include <stdlib.h>
#include <string.h>
#include <hexagram/cluster.h>
@ -41,6 +42,11 @@ hexagram_cluster *hexagram_cluster_new(double width, double height) {
cluster->width = width;
cluster->height = height;
/*
* Initialize mutable state
*/
memset(&cluster->state, '\0', sizeof(cluster->state));
return cluster;
error_malloc_cluster:
@ -63,16 +69,15 @@ void hexagram_cluster_draw_bg(hexagram_cluster *cluster,
}
void hexagram_cluster_draw_fg(hexagram_cluster *cluster,
cairo_t *cr,
hexagram_cluster_state *state) {
hexagram_tacho_draw_needle(&cluster->tacho, cr, state->rpm);
cairo_t *cr) {
hexagram_tacho_draw_needle(&cluster->tacho, cr, cluster->state.rpm);
hexagram_speedo_draw_needle(&cluster->speedo, cr,
(2.032 * state->rps * 3600) / 1000.0);
(2.032 * cluster->state.rps * 3600) / 1000.0);
hexagram_thermo_draw_needle(&cluster->thermo, cr,
state->temp);
cluster->state.temp);
hexagram_fuel_draw_needle(&cluster->fuel, cr,
state->fuel);
cluster->state.fuel);
}