mirror of https://git.sr.ht/~kikoodx/kble
62 lines
1.5 KiB
Zig
62 lines
1.5 KiB
Zig
//! This module provides functions for creating and manipulating 2D
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//! vectors with integer precision.
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const expect = @import("std").testing.expect;
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const Self = @This();
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x: i32,
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y: i32,
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/// Create a vector with `x` and `y` values.
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pub fn init(x: i32, y: i32) Self {
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return Self {
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.x = x,
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.y = y,
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};
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}
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/// Return the sum of `self` and `other`.
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pub fn add(self: Self, other: Self) Self {
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return Self {
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.x = self.x + other.x,
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.y = self.y + other.y,
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};
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}
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/// Return the difference between `self` and `other`.
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pub fn sub(self: Self, other: Self) Self {
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return Self {
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.x = self.x - other.x,
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.y = self.y - other.y,
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};
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}
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test "create Self w/ positive values" {
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const vector = Self.init(15984, 95715);
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expect(vector.x == 15984);
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expect(vector.y == 95715);
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}
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test "create Self w/ negative values" {
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const vector = Self.init(-51428, -56123);
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expect(vector.x == -51428);
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expect(vector.y == -56123);
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}
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test "add two Self using dot syntax" {
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const vector_1 = Self.init(6712, 981);
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const vector_2 = Self.init(-1823, 12);
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const vector_sum = vector_1.add(vector_2);
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expect(vector_sum.x == 4889);
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expect(vector_sum.y == 993);
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}
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test "calculate difference between two Self using dot syntax" {
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const vector_1 = Self.init(6712, 981);
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const vector_2 = Self.init(-1823, 12);
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const vector_diff = vector_1.sub(vector_2);
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expect(vector_diff.x == 8535);
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expect(vector_diff.y == 969);
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}
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