121 lines
2.9 KiB
C++
121 lines
2.9 KiB
C++
//
|
|
// Created by Wouter Groeneveld on 14/12/18.
|
|
//
|
|
|
|
|
|
|
|
#include <gtest/gtest.h>
|
|
#include <libgba-sprite-engine/math.h>
|
|
|
|
class MathSuite : public ::testing::Test {
|
|
protected:
|
|
|
|
virtual void TearDown() {
|
|
}
|
|
|
|
virtual void SetUp() {
|
|
}
|
|
};
|
|
|
|
TEST_F(MathSuite, LineBetween_Diagonal_ToTopRightCorner) {
|
|
auto points = Math::bresenhamLineBetween({120, 80}, {240, 0});
|
|
ASSERT_EQ(121, points.size());
|
|
VECTOR pt;
|
|
|
|
// some sampling
|
|
pt = points.at(1);
|
|
ASSERT_EQ(121, pt.x);
|
|
ASSERT_EQ(79, pt.y);
|
|
pt = points.at(2);
|
|
ASSERT_EQ(122, pt.x);
|
|
ASSERT_EQ(79, pt.y);
|
|
pt = points.at(10);
|
|
ASSERT_EQ(130, pt.x);
|
|
ASSERT_EQ(73, pt.y);
|
|
pt = points.at(100);
|
|
ASSERT_EQ(220, pt.x);
|
|
ASSERT_EQ(13, pt.y);
|
|
}
|
|
|
|
TEST_F(MathSuite, LineBetween_Diagonal_ToTopLeftCorner) {
|
|
auto points = Math::bresenhamLineBetween({120, 80}, {0, 0});
|
|
ASSERT_EQ(121, points.size());
|
|
VECTOR pt;
|
|
|
|
// some sampling
|
|
pt = points.at(1);
|
|
ASSERT_EQ(119, pt.x);
|
|
ASSERT_EQ(79, pt.y);
|
|
pt = points.at(2);
|
|
ASSERT_EQ(118, pt.x);
|
|
ASSERT_EQ(79, pt.y);
|
|
pt = points.at(10);
|
|
ASSERT_EQ(110, pt.x);
|
|
ASSERT_EQ(73, pt.y);
|
|
pt = points.at(100);
|
|
ASSERT_EQ(20, pt.x);
|
|
ASSERT_EQ(13, pt.y);
|
|
}
|
|
|
|
TEST_F(MathSuite, LineBetween_Diagonal_ToBottomLeftCorner) {
|
|
auto points = Math::bresenhamLineBetween({120, 80}, {0, 160});
|
|
ASSERT_EQ(121, points.size());
|
|
VECTOR pt;
|
|
|
|
// some sampling
|
|
pt = points.at(1);
|
|
ASSERT_EQ(119, pt.x);
|
|
ASSERT_EQ(81, pt.y);
|
|
pt = points.at(2);
|
|
ASSERT_EQ(118, pt.x);
|
|
ASSERT_EQ(81, pt.y);
|
|
pt = points.at(10);
|
|
ASSERT_EQ(110, pt.x);
|
|
ASSERT_EQ(87, pt.y);
|
|
pt = points.at(100);
|
|
ASSERT_EQ(20, pt.x);
|
|
ASSERT_EQ(147, pt.y);
|
|
}
|
|
|
|
TEST_F(MathSuite, LineBetween_Diagonal_ToBottomRightCorner) {
|
|
auto points = Math::bresenhamLineBetween({120, 80}, {240, 160});
|
|
ASSERT_EQ(121, points.size());
|
|
VECTOR pt;
|
|
|
|
// some sampling
|
|
pt = points.at(1);
|
|
ASSERT_EQ(121, pt.x);
|
|
ASSERT_EQ(81, pt.y);
|
|
pt = points.at(2);
|
|
ASSERT_EQ(122, pt.x);
|
|
ASSERT_EQ(81, pt.y);
|
|
pt = points.at(10);
|
|
ASSERT_EQ(130, pt.x);
|
|
ASSERT_EQ(87, pt.y);
|
|
pt = points.at(100);
|
|
ASSERT_EQ(220, pt.x);
|
|
ASSERT_EQ(147, pt.y);
|
|
}
|
|
|
|
TEST_F(MathSuite, LineBetween_Horizontal_FromCenterToHalfYZeroX) {
|
|
auto points = Math::bresenhamLineBetween({120, 80}, {0, 80});
|
|
ASSERT_EQ(121, points.size());
|
|
for(int i = 0; i <= 120; i++) {
|
|
auto &vec = points.front();
|
|
ASSERT_EQ(80, vec.y);
|
|
ASSERT_EQ(120 - i, vec.x);
|
|
points.pop_front();
|
|
}
|
|
}
|
|
|
|
TEST_F(MathSuite, LineBetween_Vertical_FromCenterToHalfXFullY) {
|
|
auto points = Math::bresenhamLineBetween({120, 80}, {120, 160});
|
|
ASSERT_EQ(81, points.size());
|
|
for(int i = 0; i <= (160 - 80); i++) {
|
|
auto &vec = points.front();
|
|
ASSERT_EQ(120, vec.x);
|
|
ASSERT_EQ(80 + i, vec.y);
|
|
points.pop_front();
|
|
}
|
|
}
|