bb
157c6af18e
Avoid cases of filenames Update years in terms and other legal(ish) documents Don't update years in license headers, since change is not meaningful Will add linter rule in seperate commit Happy recompiling everyone! Original Patch By: Nescio Comment By: Gallaecio Differential Revision: D2620 This was SVN commit r27786.
104 lines
3.1 KiB
C++
104 lines
3.1 KiB
C++
/* Copyright (C) 2022 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef INCLUDED_CANVAS2D
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#define INCLUDED_CANVAS2D
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#include "graphics/Texture.h"
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#include "maths/Vector2D.h"
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#include "renderer/backend/IDeviceCommandContext.h"
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#include <memory>
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#include <vector>
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class CRect;
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class CTextRenderer;
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struct CColor;
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// Encapsulates 2D drawing functionality to hide and optimize
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// low level API calls.
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class CCanvas2D
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{
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public:
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CCanvas2D(
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const uint32_t widthInPixels, const uint32_t heightInPixels, const float scale,
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Renderer::Backend::IDeviceCommandContext* deviceCommandContext);
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~CCanvas2D();
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CCanvas2D(const CCanvas2D&) = delete;
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CCanvas2D& operator=(const CCanvas2D&) = delete;
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CCanvas2D(CCanvas2D&&) = delete;
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CCanvas2D& operator=(CCanvas2D&&) = delete;
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/**
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* Draws a line by the given points with the width and color.
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*/
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void DrawLine(
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const std::vector<CVector2D>& points,
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const float width, const CColor& color);
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/**
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* Draws the rect filled with the color.
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*/
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void DrawRect(const CRect& rect, const CColor& color);
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/**
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* Draws a piece of the texture from the source rect into the
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* destination rect. The result color is set by the following formula:
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* TEXTURE_COLOR * COLOR_MULTIPLY + COLOR_ADD
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* The texture color is blended with its own grayscale version according to
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* the grayscale factor.
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*/
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void DrawTexture(
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const CTexturePtr& texture, const CRect& destination, const CRect& source,
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const CColor& multiply, const CColor& add, const float grayscaleFactor);
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/**
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* A simpler version of the previous one, draws the texture into the
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* destination rect without color modifications.
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*/
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void DrawTexture(const CTexturePtr& texture, const CRect& destination);
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/**
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* A similar to the original one, draws the texture into the
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* destination rect but rotates it first around the origin point by angle
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* radians (a positive angle denotes a clockwise rotation).
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*/
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void DrawRotatedTexture(
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const CTexturePtr& texture, const CRect& destination, const CRect& source,
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const CColor& multiply, const CColor& add, const float grayscaleFactor,
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const CVector2D& origin, const float angle);
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/**
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* Draws a text using canvas materials.
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*/
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void DrawText(CTextRenderer& textRenderer);
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/**
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* Unbinds all binded resources and clears caches. Frequent calls might
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* affect performance. Useful to call a custom rendering code.
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*/
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void Flush();
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private:
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class Impl;
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std::unique_ptr<Impl> m;
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};
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#endif // INCLUDED_CANVAS2D
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