92 lines
2.4 KiB
C++
92 lines
2.4 KiB
C++
// Copyright (c) 2011, Thomas Goyne <plorkyeran@aegisub.org>
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//
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// Permission to use, copy, modify, and distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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//
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// Aegisub Project http://www.aegisub.org/
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/// @file vector2d.cpp
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/// @brief 2D mathematical vector used in visual typesetting
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/// @ingroup utility visual_ts
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///
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#include "vector2d.h"
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#include "utils.h"
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#include <libaegisub/format.h>
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#include <limits>
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Vector2D::Vector2D()
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: x(std::numeric_limits<float>::min())
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, y(std::numeric_limits<float>::min())
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{
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}
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Vector2D operator *(float f, Vector2D v) {
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return Vector2D(v.X() * f, v.Y() * f);
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}
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Vector2D operator /(float f, Vector2D v) {
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return Vector2D(f / v.X(), f / v.Y());
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}
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Vector2D operator +(float f, Vector2D v) {
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return Vector2D(v.X() + f, v.Y() + f);
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}
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Vector2D operator -(float f, Vector2D v) {
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return Vector2D(f - v.X(), f - v.Y());
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}
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Vector2D Vector2D::Unit() const {
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float len = Len();
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if (len == 0)
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return Vector2D(0, 0);
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return *this / len;
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}
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Vector2D Vector2D::SingleAxis() const {
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if (abs(x) < abs(y))
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return Vector2D(0, y);
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else
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return Vector2D(x, 0);
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}
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Vector2D Vector2D::Max(Vector2D param) const {
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return Vector2D(std::max(x, param.x), std::max(y, param.y));
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}
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Vector2D Vector2D::Min(Vector2D param) const {
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return Vector2D(std::min(x, param.x), std::min(y, param.y));
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}
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Vector2D Vector2D::Round(float step) const {
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return Vector2D(floorf(x / step + .5f) * step, floorf(y / step + .5f) * step);
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}
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Vector2D::operator unspecified_bool_type() const {
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return *this == Vector2D() ? nullptr : &Vector2D::x;
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}
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std::string Vector2D::PStr(char sep) const {
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return "(" + Str(sep) + ")";
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}
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std::string Vector2D::DStr(char sep) const {
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return agi::format("%d%c%d", (int)x, sep, (int)y);
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}
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std::string Vector2D::Str(char sep) const {
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return float_to_string(x) + sep + float_to_string(y);
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}
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