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e6fdf0e22c
Changes draw command implementation to properly follow
command design pattern. All drawing commands have been
moved to separate inheriting draw commands from renderer.
Other changes:
- New draw methods overloads have been added to pixel renderer.
Now pixel rendering methods are in one class.
- Simplified draw commands naming.
- Changed variable naming in draw commands to be more verbose.
- Changed {x,y} pairs to Points where possible.
49 lines
1.7 KiB
C++
49 lines
1.7 KiB
C++
// Copyright (c) 2017-2020, Mudita Sp. z.o.o. All rights reserved.
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// For licensing, see https://github.com/mudita/MuditaOS/LICENSE.md
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#include "CircleRenderer.hpp"
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#include "ArcRenderer.hpp"
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#include "PixelRenderer.hpp"
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namespace gui::renderer
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{
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auto CircleRenderer::DrawableStyle::from(const DrawCircle &command) -> DrawableStyle
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{
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return DrawableStyle{command.width, command.borderColor, command.filled ? command.fillColor : ColorNoColor};
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}
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void CircleRenderer::draw(Context *ctx, Point center, Length radius, const DrawableStyle &style)
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{
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if (style.fillColor == ColorNoColor) {
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draw(ctx, center, radius, style.borderColor, style.penWidth);
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}
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else {
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draw(ctx, center, radius, style.borderColor, style.penWidth, style.fillColor);
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}
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}
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void CircleRenderer::draw(
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Context *ctx, Point center, Length radius, Color borderColor, Length borderWidth, Color fillColor)
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{
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// First, fill the desired area.
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const auto r = static_cast<int>(radius);
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const auto rr = r * r;
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for (auto x = -r; x < r; ++x) {
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const auto height = static_cast<int>(std::sqrt(rr - (x * x)));
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for (auto y = -height; y < height; ++y) {
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PixelRenderer::draw(ctx, Point(center.x + x, center.y + y), fillColor);
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}
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}
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// Next, draw a border on top.
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draw(ctx, center, radius, borderColor, borderWidth);
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}
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void CircleRenderer::draw(Context *ctx, Point center, Length radius, Color color, Length width)
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{
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ArcRenderer::draw(ctx, center, radius, 0, trigonometry::FullAngle, ArcRenderer::DrawableStyle{width, color});
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}
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} // namespace gui::renderer
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