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https://gitea.wildfiregames.com/0ad/0ad
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2f3837e0b5
Implements DrawLine for charts. Differential Revision: https://code.wildfiregames.com/D4024 This was SVN commit r25588.
64 lines
1.9 KiB
C++
64 lines
1.9 KiB
C++
/* Copyright (C) 2021 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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#include "precompiled.h"
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#include "Canvas2D.h"
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#include "graphics/Color.h"
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#include "graphics/ShaderManager.h"
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#include "gui/GUIMatrix.h"
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#include "maths/Vector2D.h"
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#include "ps/CStrInternStatic.h"
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#include "renderer/Renderer.h"
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void CCanvas2D::DrawLine(const std::vector<CVector2D>& points, const float width, const CColor& color)
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{
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std::vector<float> vertices;
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vertices.reserve(points.size() * 3);
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for (const CVector2D& point : points)
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{
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vertices.emplace_back(point.X);
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vertices.emplace_back(point.Y);
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vertices.emplace_back(0.0f);
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}
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// Setup the render state
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CMatrix3D transform = GetDefaultGuiMatrix();
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CShaderDefines lineDefines;
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CShaderTechniquePtr tech = g_Renderer.GetShaderManager().LoadEffect(str_gui_solid, g_Renderer.GetSystemShaderDefines(), lineDefines);
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tech->BeginPass();
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CShaderProgramPtr shader = tech->GetShader();
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shader->Uniform(str_transform, transform);
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shader->Uniform(str_color, color );
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shader->VertexPointer(3, GL_FLOAT, 0, &vertices[0]);
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shader->AssertPointersBound();
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#if !CONFIG2_GLES
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glEnable(GL_LINE_SMOOTH);
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#endif
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glLineWidth(width);
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if (!g_Renderer.DoSkipSubmit())
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glDrawArrays(GL_LINE_STRIP, 0, vertices.size() / 3);
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glLineWidth(1.0f);
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#if !CONFIG2_GLES
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glDisable(GL_LINE_SMOOTH);
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#endif
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tech->EndPass();
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}
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