compressor data structure

1 files changed, 34 insertions, 0 deletions

diff --git a/compressor.c b/compressor.c
new file mode 100644
index 0000000..05aa9fc
--- /dev/null
+++ b/compressor.c
@@ -0,0 +1,34 @@
+#include <errno.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <strings.h>
+
+#include <dirent.h>
+
+#include "unit.h"
+
+
+static const char ROOT[] = "compressor_maps/";
+
+
+typedef struct {
+	int x, y;
+} Point;
+
+typedef enum { MASS_FLOW, VOLUME_FLOW } FlowType;
+
+typedef union {
+	MassFlowRate mfr;
+	VolumeFlowRate vfr;
+} Flow;
+
+typedef struct {
+	char brand[NAME_MAX+1]; /* e.g. Borgwarner. */
+	char series[NAME_MAX+1]; /* e.g. Airwerks. */
+	char model[NAME_MAX+1]; /* e.g. S200SX-E. */
+	char imgfile[NAME_MAX+1]; /* name of file containing image of the compressor map. */
+	Point origin, refpt; /* pixel coords of origin and reference point. */
+	double originpr, refpr; /* pressure ratio at origin and reference point. */
+	Flow originflow, refflow; /* flow at origin and reference point. */
+	FlowType flowtype; /* mass-flow or volume-flow (x-axis). */
+} Compressor;