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/*
* Copyright (c) 2008-2025 Jonathan Schleifer <js@nil.im>
*
* All rights reserved.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License version 3.0 only,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* version 3.0 for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* version 3.0 along with this program. If not, see
* <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#import "ObjFW.h"
#import "ObjFWTest.h"
@interface OFMatrix4x4Tests: OTTestCase
{
OFMatrix4x4 *_matrix;
}
@end
@implementation OFMatrix4x4Tests
- (void)setUp
{
[super setUp];
_matrix = [[OFMatrix4x4 alloc] initWithValues: (const float [4][4]){
{ 1, 2, 3, 4 },
{ 5, 6, 7, 8 },
{ 9, 10, 11, 12 },
{ 13, 14, 15, 16 }
}];
}
- (void)dealloc
{
objc_release(_matrix);
[super dealloc];
}
- (void)testIdentityMatrix
{
OTAssertEqual(memcmp([[OFMatrix4x4 identityMatrix] values],
(const float [4][4]){
{ 1, 0, 0, 0 },
{ 0, 1, 0, 0 },
{ 0, 0, 1, 0 },
{ 0, 0, 0, 1 }
}, 16 * sizeof(float)),
0);
}
- (void)testDescription
{
OTAssertEqualObjects(_matrix.description,
@"<OFMatrix4x4: {\n"
@"\t1 2 3 4\n"
@"\t5 6 7 8\n"
@"\t9 10 11 12\n"
@"\t13 14 15 16\n"
@"}>");
}
- (void)testIsEqual
{
OTAssertEqualObjects([OFMatrix4x4 identityMatrix],
([OFMatrix4x4 matrixWithValues: (const float [4][4]){
{ 1, 0, 0, 0 },
{ 0, 1, 0, 0 },
{ 0, 0, 1, 0 },
{ 0, 0, 0, 1 }
}]));
}
- (void)testHash
{
OTAssertEqual([[OFMatrix4x4 identityMatrix] hash],
[([OFMatrix4x4 matrixWithValues: (const float [4][4]){
{ 1, 0, 0, 0 },
{ 0, 1, 0, 0 },
{ 0, 0, 1, 0 },
{ 0, 0, 0, 1 }
}]) hash]);
}
- (void)testCopy
{
OTAssertEqualObjects(objc_autorelease([_matrix copy]), _matrix);
}
- (void)testMultiplyWithMatrix
{
OFMatrix4x4 *matrix;
matrix = objc_autorelease([_matrix copy]);
[matrix multiplyWithMatrix: [OFMatrix4x4 identityMatrix]];
OTAssertEqualObjects(matrix, _matrix);
matrix = [OFMatrix4x4 matrixWithValues: (const float [4][4]){
{ 100, 200, 300, 400 },
{ 500, 600, 700, 800 },
{ 900, 1000, 1100, 1200 },
{ 1300, 1400, 1500, 1600 }
}];
[matrix multiplyWithMatrix: _matrix];
OTAssertEqualObjects(matrix,
([OFMatrix4x4 matrixWithValues: (const float [4][4]){
{ 9000, 10000, 11000, 12000 },
{ 20200, 22800, 25400, 28000 },
{ 31400, 35600, 39800, 44000 },
{ 42600, 48400, 54200, 60000 }
}]));
}
- (void)testTranslateWithVector
{
OFMatrix4x4 *matrix = [OFMatrix4x4 identityMatrix];
OFVector4D point;
[matrix translateWithVector: OFMakeVector3D(1, 2, 3)];
point = [matrix transformedVector: OFMakeVector4D(2, 3, 4, 1)];
OTAssertEqual(point.x, 3);
OTAssertEqual(point.y, 5);
OTAssertEqual(point.z, 7);
OTAssertEqual(point.w, 1);
}
- (void)testScaleWithVector
{
OFMatrix4x4 *matrix = [OFMatrix4x4 identityMatrix];
OFVector4D point;
[matrix translateWithVector: OFMakeVector3D(1, 2, 3)];
[matrix scaleWithVector: OFMakeVector3D(-1, 0.5f, 2)];
point = [matrix transformedVector: OFMakeVector4D(2, 3, 4, 1)];
OTAssertEqual(point.x, -3);
OTAssertEqual(point.y, 2.5);
OTAssertEqual(point.z, 14);
OTAssertEqual(point.w, 1);
}
- (void)testTransformVectorsCount
{
OF_ALIGN(16) OFVector4D points[2] = {{ 1, 2, 3, 1 }, { 7, 8, 9, 2 }};
[_matrix transformVectors: points count: 2];
OTAssertEqual(points[0].x, 18);
OTAssertEqual(points[0].y, 46);
OTAssertEqual(points[0].z, 74);
OTAssertEqual(points[0].w, 102);
OTAssertEqual(points[1].x, 58);
OTAssertEqual(points[1].y, 162);
OTAssertEqual(points[1].z, 266);
OTAssertEqual(points[1].w, 370);
}
@end
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