irrlicht/tests/testLine2d.cpp
cutealien 8310a3fbad Avoid warning and make local variable lower-case.
git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@6000 dfc29bdd-3216-0410-991c-e03cc46cb475
2019-12-12 16:32:41 +00:00

302 lines
9.1 KiB
C++

// Copyright (C) 2008-2012 Colin MacDonald
// No rights reserved: this software is in the public domain.
#include "testUtils.h"
using namespace irr;
using namespace core;
static bool testLines(line2df const & line1,
line2df const & line2,
bool expectedHit,
const vector2df & expectedIntersection)
{
bool gotExpectedResult = true;
logTestString("\nLine 1 = %.1f %.1f to %.1f %.1f \n",
line1.start.X, line1.start.Y,
line1.end.X, line1.end.Y);
logTestString("Line 2 = %.1f %.1f to %.1f %.1f\n",
line2.start.X, line2.start.Y,
line2.end.X, line2.end.Y);
vector2df intersection;
logTestString("line1 with line2 = ");
if(line1.intersectWith(line2, intersection))
{
logTestString("hit at %.1f %.1f - ",
intersection.X, intersection.Y);
if(!line1.isPointOnLine(intersection) || !line2.isPointOnLine(intersection))
{
logTestString("ERROR! point is not on both lines - ");
gotExpectedResult = false;
}
if(expectedHit)
{
if(intersection == expectedIntersection)
{
logTestString("expected\n");
}
else
{
logTestString("unexpected intersection (expected %.1f %.1f)\n",
expectedIntersection.X, expectedIntersection.Y);
gotExpectedResult = false;
}
}
else
{
logTestString("UNEXPECTED\n");
gotExpectedResult = false;
}
}
else
{
logTestString("miss - ");
if(!expectedHit)
{
logTestString("expected\n");
}
else
{
logTestString("UNEXPECTED\n");
gotExpectedResult = false;
}
}
logTestString("line2 with line1 = ");
if(line2.intersectWith(line1, intersection))
{
logTestString("hit at %.1f %.1f - ",
intersection.X, intersection.Y);
if(!line1.isPointOnLine(intersection) || !line2.isPointOnLine(intersection))
{
logTestString("ERROR! point is not on both lines - ");
gotExpectedResult = false;
}
if(expectedHit)
{
if(intersection == expectedIntersection)
{
logTestString("expected\n");
}
else
{
logTestString("unexpected intersection (expected %.1f %.1f)\n",
expectedIntersection.X, expectedIntersection.Y);
gotExpectedResult = false;
}
}
else
{
logTestString("UNEXPECTED\n");
gotExpectedResult = false;
}
}
else
{
logTestString("miss - ");
if(!expectedHit)
{
logTestString("expected\n");
}
else
{
logTestString("UNEXPECTED\n");
gotExpectedResult = false;
}
}
return gotExpectedResult;
}
// Test the functionality of line2d>T>::intersectWith().
/** Validation is done with assert_log() against expected results. */
bool line2dIntersectWith(void)
{
bool allExpected = true;
// Crossing lines, horizontal and vertical
allExpected &= testLines(line2df(vector2df(1,1),vector2df(1,3)),
line2df(vector2df(0,2),vector2df(2,2)),
true, vector2df(1,2));
assert_log(allExpected);
// Crossing lines, both diagonal
allExpected &= testLines(line2df(vector2df(0,0),vector2df(2,2)),
line2df(vector2df(0,2),vector2df(2,0)),
true, vector2df(1,1));
assert_log(allExpected);
// Non-crossing lines, horizontal and vertical
allExpected &= testLines(line2df(vector2df(1,1),vector2df(1,3)),
line2df(vector2df(0,4),vector2df(2,4)),
false, vector2df());
assert_log(allExpected);
// Non-crossing lines, both diagonal
allExpected &= testLines(line2df(vector2df(0,0),vector2df(2,2)),
line2df(vector2df(3,4),vector2df(4,3)),
false, vector2df());
assert_log(allExpected);
// Meeting at a common point
allExpected &= testLines(line2df(vector2df(0,0),vector2df(1,0)),
line2df(vector2df(1,0),vector2df(2,0)),
true, vector2df(1,0));
assert_log(allExpected);
allExpected &= testLines(line2df(vector2df(0,0),vector2df(1,0)),
line2df(vector2df(1,0),vector2df(0,1)),
true, vector2df(1,0));
assert_log(allExpected);
allExpected &= testLines(line2df(vector2df(0,0),vector2df(1,0)),
line2df(vector2df(1,0),vector2df(0,-1)),
true, vector2df(1,0));
assert_log(allExpected);
allExpected &= testLines(line2df(vector2df(0,0),vector2df(0,1)),
line2df(vector2df(0,1),vector2df(1,1)),
true, vector2df(0,1));
assert_log(allExpected);
allExpected &= testLines(line2df(vector2df(0,0),vector2df(0,1)),
line2df(vector2df(0,1),vector2df(1,-1)),
true, vector2df(0,1));
assert_log(allExpected);
allExpected &= testLines(line2df(vector2df(0,0),vector2df(0,1)),
line2df(vector2df(0,1),vector2df(0,2)),
true, vector2df(0,1));
assert_log(allExpected);
allExpected &= testLines(line2df(vector2df(0,0),vector2df(1,0)),
line2df(vector2df(1,0),vector2df(2,0)),
true, vector2df(1,0));
assert_log(allExpected);
allExpected &= testLines(line2df(vector2df(0,0),vector2df(1,1)),
line2df(vector2df(1,1),vector2df(0,2)),
true, vector2df(1,1));
assert_log(allExpected);
allExpected &= testLines(line2df(vector2df(0,0),vector2df(1,1)),
line2df(vector2df(1,1),vector2df(2,0)),
true, vector2df(1,1));
assert_log(allExpected);
allExpected &= testLines(line2df(vector2df(0,0),vector2df(1,1)),
line2df(vector2df(1,1),vector2df(2,2)),
true, vector2df(1,1));
assert_log(allExpected);
// Parallel lines, no intersection
allExpected &= testLines(line2df(vector2df(0,0),vector2df(1,0)),
line2df(vector2df(0,1),vector2df(1,1)),
false, vector2df());
assert_log(allExpected);
allExpected &= testLines(line2df(vector2df(0,0),vector2df(0,1)),
line2df(vector2df(1,0),vector2df(1,1)),
false, vector2df());
assert_log(allExpected);
// Non parallel lines, no intersection
allExpected &= testLines(line2df(vector2df(0,0),vector2df(1,0)),
line2df(vector2df(0,1),vector2df(0,2)),
false, vector2df());
assert_log(allExpected);
allExpected &= testLines(line2df(vector2df(0,0),vector2df(0,1)),
line2df(vector2df(1,0),vector2df(2,0)),
false, vector2df());
assert_log(allExpected);
// Coincident (and thus parallel) lines
allExpected &= testLines(line2df(vector2df(0,0),vector2df(1,0)),
line2df(vector2df(0,0),vector2df(1,0)),
true, vector2df(0,0));
assert_log(allExpected);
allExpected &= testLines(line2df(vector2df(2,0),vector2df(0,2)),
line2df(vector2df(2,0),vector2df(0,2)),
true, vector2df(2,0));
assert_log(allExpected);
// Two segments of the same unlimited line, but no intersection
allExpected &= testLines(line2df(vector2df(0,0),vector2df(1,1)),
line2df(vector2df(2,2),vector2df(3,3)),
false, vector2df());
assert_log(allExpected);
allExpected &= testLines(line2df(vector2df(0,0),vector2df(1,0)),
line2df(vector2df(2,0),vector2df(3,0)),
false, vector2df());
assert_log(allExpected);
allExpected &= testLines(line2df(vector2df(0,0),vector2df(0,1)),
line2df(vector2df(0,2),vector2df(0,3)),
false, vector2df());
assert_log(allExpected);
// Overlapping parallel lines
allExpected &= testLines(line2df(vector2df(1,0),vector2df(2,0)),
line2df(vector2df(0,0),vector2df(3,0)),
true, vector2df(1.5f, 0));
assert_log(allExpected);
allExpected &= testLines(line2df(vector2df(0,1),vector2df(0,2)),
line2df(vector2df(0,0),vector2df(0,3)),
true, vector2df(0, 1.5f));
assert_log(allExpected);
allExpected &= testLines(line2df(vector2df(1,0),vector2df(2,0)),
line2df(vector2df(0,0),vector2df(3,0)),
true, vector2df(1.5f, 0));
assert_log(allExpected);
allExpected &= testLines(line2df(vector2df(0,1),vector2df(0,2)),
line2df(vector2df(0,0),vector2df(0,3)),
true, vector2df(0, 1.5f));
assert_log(allExpected);
allExpected &= testLines(line2df(vector2df(1,1),vector2df(2,2)),
line2df(vector2df(0,0),vector2df(3,3)),
true, vector2df(1.5f, 1.5f));
assert_log(allExpected);
allExpected &= testLines(line2df(vector2df(1,2),vector2df(2,1)),
line2df(vector2df(0,3),vector2df(3,0)),
true, vector2df(1.5f, 1.5f));
assert_log(allExpected);
allExpected &= testLines(line2df(vector2df(0,0),vector2df(10,8)),
line2df(vector2df(2.5f,2.0f),vector2df(5.0f,4.0f)),
true, vector2df(3.75f, 3.0f));
assert_log(allExpected);
allExpected &= testLines(line2df(vector2df(0,0),vector2df(2000,1000)),
line2df(vector2df(2,1),vector2df(2.2f,1.4f)),
true, vector2df(2.0f, 1.0f));
assert_log(allExpected);
if(!allExpected)
logTestString("\nline2dIntersectWith failed\n");
return allExpected;
}
bool getClosestPoint(void)
{
// testcase that fails when integers are handled like floats
irr::core::line2di line(-283, -372, 374, 289);
irr::core::vector2di p1 = line.getClosestPoint( irr::core::vector2di(290,372) );
irr::core::vector2di p2 = line.getClosestPoint( irr::core::vector2di(135,372) );
if( p1 == p2 )
{
logTestString("getClosestPoint failed\n");
return false;
}
return true;
}
bool testLine2d(void)
{
bool allExpected = true;
allExpected &= line2dIntersectWith();
allExpected &= getClosestPoint();
if(allExpected)
logTestString("\nAll tests passed\n");
else
logTestString("\nFAIL!\n");
return allExpected;
}