在Android层实现触摸屏校验

核心提示：for (j = 0; j < 5; j++) {z += (float)cal.xfb[j];zx += (float)(cal.xfb[j] * cal.x[j]);zy += (float)(cal.xfb[j] * cal.y[j]);}// Now multiply out to get the cal

for (j = 0; j < 5; j++) {

z += (float)cal.xfb[j];

zx += (float)(cal.xfb[j] * cal.x[j]);

zy += (float)(cal.xfb[j] * cal.y[j]);

}

// Now multiply out to get the calibration for framebuffer x coord

cal.a[0] = (int)((a * z + b * zx + c * zy) * (scaling));

cal.a[1] = (int)((b * z + e * zx + f * zy) * (scaling));

cal.a[2] = (int)((c * z + f * zx + i * zy) * (scaling));

System.out.printf("%f %f %f ", (a * z + b * zx + c * zy), (b * z + e * zx + f * zy), (c

* z + f * zx + i * zy));

// Get sums for y calibration

z = zx = zy = 0;

for (j = 0; j < 5; j++) {

z += (float)cal.yfb[j];

zx += (float)(cal.yfb[j] * cal.x[j]);

zy += (float)(cal.yfb[j] * cal.y[j]);

}

// Now multiply out to get the calibration for framebuffer y coord

cal.a[3] = (int)((a * z + b * zx + c * zy) * (scaling));

cal.a[4] = (int)((b * z + e * zx + f * zy) * (scaling));

cal.a[5] = (int)((c * z + f * zx + i * zy) * (scaling));

System.out.printf("%f %f %f ", (a * z + b * zx + c * zy), (b * z + e * zx + f * zy), (c

* z + f * zx + i * zy));

// If we got here, we're OK, so assign scaling to a[6] and return

cal.a[6] = (int)scaling;

return true;

/*

* // This code was here originally to just insert default values

* for(j=0;j<7;j++) { c->a[j]=0; } c->a[1] = c->a[5] = c->a[6] = 1;

* return 1;

*/

}

void get_sample(int index, int x1, int y1, int x, int y) {

Log.i("XXW", "get_sample");

cal.x[index] = x1;

cal.y[index] = y1;

cal.xfb[index] = x;

cal.yfb[index] = y;

}

int calibrate_main() {

int result = 0;

Log.i("XXW", "calibrate_main");