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Viewing changes to imagery/i.ortho.photo/photo.2target/conv.c

  • Committer: Bazaar Package Importer
  • Author(s): Francesco Paolo Lovergine
  • Date: 2011-04-13 17:08:41 UTC
  • mfrom: (8.1.7 sid)
  • Revision ID: james.westby@ubuntu.com-20110413170841-ss1t9bic0d0uq0gz
Tags: 6.4.1-1
* New upstream version.
* Now build-dep on libjpeg-dev and current libreadline6-dev.
* Removed patch swig: obsolete.
* Policy bumped to 3.9.2, without changes.

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imagery/i.ortho.photo/photo.2target/conv.c
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#include "globals.h"
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/* conversion routines to convert from view x,y to cell col,row
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 * as well as cell col,row to cell east,north
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 */
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int view_to_col(View * view, int x)
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{
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    return x - view->cell.left;
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}
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int view_to_row(View * view, int y)
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{
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    return y - view->cell.top;
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}
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int col_to_view(View * view, int col)
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{
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    return view->cell.left + col;
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}
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int row_to_view(View * view, int row)
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{
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    return view->cell.top + row;
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}
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/* in these next 2 routines, location determines if we are
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 * converting from center of the cell (location == .5)
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 * top or left edge (location == 0.0)
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 * bottom or right edge (location == 1.0)
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 */
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double row_to_northing(struct Cell_head *cellhd, int row, double location)
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{
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    return cellhd->north - (row + location) * cellhd->ns_res;
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}
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double col_to_easting(struct Cell_head *cellhd, int col, double location)
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{
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    return cellhd->west + (col + location) * cellhd->ew_res;
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}
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double northing_to_row(struct Cell_head *cellhd, double north)
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{
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    return (cellhd->north - north) / cellhd->ns_res;
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}
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double easting_to_col(struct Cell_head *cellhd, double east)
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{
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    return (east - cellhd->west) / cellhd->ew_res;
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}