77 lines
No EOL
2.8 KiB
C++
77 lines
No EOL
2.8 KiB
C++
/*
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Crafter®.Graphics
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Copyright (C) 2026 Catcrafts®
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catcrafts.net
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License version 3.0 as published by the Free Software Foundation;
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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export module Crafter.Graphics:Transform2D;
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import std;
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import :Types;
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import :ForwardDeclarations;
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export namespace Crafter {
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struct Anchor2D {
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float x;
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float y;
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float width;
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float height;
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float offsetX;
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float offsetY;
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std::uint8_t z;
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bool maintainAspectRatio;
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Anchor2D() = default;
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Anchor2D(float x, float y, float width, float height, float offsetX, float offsetY, std::uint8_t z, bool maintainAspectRatio = false);
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};
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struct Transform2D {
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Anchor2D anchor;
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ScaleData2D scaled;
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std::vector<Transform2D*> children;
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Transform2D() = default;
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Transform2D(Anchor2D anchor) : anchor(anchor) {
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}
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Transform2D(Transform2D&) = delete;
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Transform2D(Transform2D&&) = delete;
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Transform2D& operator=(Transform2D&) = delete;
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virtual ~Transform2D() = default;
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virtual void UpdatePosition(RendertargetBase& window, Transform2D& parent) {
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ScaleElement(parent);
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for(Transform2D* child : children) {
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child->UpdatePosition(window, *this);
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}
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}
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void ScaleElement(Transform2D& parent) {
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if(anchor.maintainAspectRatio) {
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if(parent.scaled.size.x > parent.scaled.size.y) {
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scaled.size.x = anchor.width * parent.scaled.size.y;
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scaled.size.y = anchor.height * parent.scaled.size.y;
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} else {
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scaled.size.x = anchor.width * parent.scaled.size.x;
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scaled.size.y = anchor.height * parent.scaled.size.x;
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}
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} else {
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scaled.size.x = anchor.width * parent.scaled.size.x;
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scaled.size.y = anchor.height * parent.scaled.size.y;
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}
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scaled.position.x = parent.scaled.position.x + (anchor.x * parent.scaled.size.x - anchor.offsetX * scaled.size.x);
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scaled.position.y = parent.scaled.position.y + (anchor.y * parent.scaled.size.y - anchor.offsetY * scaled.size.y);
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}
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};
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} |