Geometric Correction

Example KFLOP PC Program to prompt Operator for a Rotation Angle and then create a 4 point Geocorrection Table to apply this rotation

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#include "KMotionDef.h" #define TMP 10 // which spare persist to use to transfer data #include "KflopToKMotionCNCFunctions.c"   // Create KMotionCNC GeoCorrection File based on simple Transformation   double offsetx = 0.0;  // Transform values double offsety = 0.0; double theta = 0.0; double scale = 1.0;   void WriteGrid(int row, int col, FILE *f); double TransformX(double x, double y); double TransformY(double x, double y);   main() {     float value;           // Ask Operator desired rotation angle     if (!InputBox("Enter Angle in degrees",&value))      {         theta = value * PI/180.0;  // convert to radians                   // Create Simple 4 point Geo File         FILE *f=fopen("C:\\Temp\\MapFile.txt","wt");         fprintf(f,"2,2\n");        // rows, cols         fprintf(f,"1,1\n");        // gridx gridy         fprintf(f,"-0.5,-0.5\n");  // centerX centerY           WriteGrid(0, 0, f);  // write the 4 transformed points         WriteGrid(0, 1, f);         WriteGrid(1, 0, f);         WriteGrid(1, 1, f);         fclose(f);         DoPC(PC_COMM_RELOAD_GEOCORRECTION);  // tell KMotionCNC to reload the file     } }   // write a transformed point to Geo File void WriteGrid(int row, int col, FILE *f) {     double Centerx = 0.5;     double Centery = 0.5;     double x = col - Centerx;     double y = row - Centery;     fprintf(f,"%d,%d,%.11f,%.11f,0\n", row, col, TransformX(x, y), TransformY(x, y)); }   // Desired X Transformaion double TransformX(double x, double y) {     return (scale * (x * cos(theta) - y * sin(theta))) + offsetx; }   // Desired Y Transformaion double TransformY(double x, double y) {     return (scale * (x * sin(theta) + y * cos(theta))) + offsety; }