650109e10f
Expand test coverage from ~19% to ~25% of GAL API with modular scenario files: - bezier-curves: Tests DrawCurve() with S-curves, waves, hearts, and control points - arc-segments: Tests DrawArcSegment() with thick arc strokes (PCB trace style) - segment-chain: Tests DrawSegmentChain() with zigzags, spirals, sharp corners - group-caching: Tests BeginGroup/EndGroup/DrawGroup for cached geometry Architecture: - New scenarios in separate files under scenarios/ - Forward declarations in main gal_test_scenarios.cpp - CMakeLists.txt updated to compile new scenario modules Also: - Remove unused build-wxwidgets-native.sh (using system wxWidgets) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
138 lines
3.7 KiB
C++
138 lines
3.7 KiB
C++
/**
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* Bezier Curves Scenario
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*
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* Tests GAL::DrawCurve() - cubic bezier splines
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*/
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#include <gal/graphics_abstraction_layer.h>
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#include <cmath>
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#ifndef M_PI
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#define M_PI 3.14159265358979323846
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#endif
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namespace GALTest {
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using KIGFX::COLOR4D;
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using KIGFX::GAL;
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void RenderBezierCurves(GAL* gal, int width, int height) {
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double cx = width / 2.0;
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double cy = height / 2.0;
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gal->SetIsFill(false);
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gal->SetIsStroke(true);
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// Simple S-curve
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gal->SetStrokeColor(COLOR4D(1.0, 0.3, 0.3, 1.0));
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gal->SetLineWidth(3.0);
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gal->DrawCurve(
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VECTOR2D(100, cy - 100), // start
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VECTOR2D(200, cy - 200), // control 1
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VECTOR2D(300, cy), // control 2
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VECTOR2D(400, cy - 100), // end
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0.0 // filter value
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);
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// Inverse S-curve below
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gal->SetStrokeColor(COLOR4D(0.3, 1.0, 0.3, 1.0));
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gal->DrawCurve(
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VECTOR2D(100, cy + 100),
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VECTOR2D(200, cy + 200),
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VECTOR2D(300, cy),
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VECTOR2D(400, cy + 100),
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0.0
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);
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// Loop curve (tight control points)
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gal->SetStrokeColor(COLOR4D(0.3, 0.3, 1.0, 1.0));
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gal->SetLineWidth(2.0);
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gal->DrawCurve(
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VECTOR2D(450, cy - 50),
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VECTOR2D(550, cy - 150),
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VECTOR2D(550, cy + 150),
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VECTOR2D(450, cy + 50),
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0.0
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);
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// Straight-ish curve (control points on line)
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gal->SetStrokeColor(COLOR4D(1.0, 1.0, 0.3, 1.0));
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gal->DrawCurve(
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VECTOR2D(500, 80),
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VECTOR2D(550, 80),
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VECTOR2D(650, 80),
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VECTOR2D(700, 80),
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0.0
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);
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// Wave pattern using multiple curves
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gal->SetStrokeColor(COLOR4D(0.8, 0.5, 0.8, 1.0));
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gal->SetLineWidth(2.5);
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double waveY = height - 100;
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double segWidth = 100;
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double amplitude = 40;
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for (int i = 0; i < 6; i++) {
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double x0 = 100 + i * segWidth;
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double x1 = x0 + segWidth;
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double dir = (i % 2 == 0) ? 1.0 : -1.0;
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gal->DrawCurve(
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VECTOR2D(x0, waveY),
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VECTOR2D(x0 + segWidth * 0.33, waveY + amplitude * dir),
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VECTOR2D(x0 + segWidth * 0.66, waveY + amplitude * dir),
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VECTOR2D(x1, waveY),
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0.0
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);
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}
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// Heart shape using two curves
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gal->SetStrokeColor(COLOR4D(1.0, 0.2, 0.4, 1.0));
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gal->SetLineWidth(3.0);
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double hx = cx + 150;
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double hy = cy - 50;
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double hs = 50; // heart scale
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// Left half of heart
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gal->DrawCurve(
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VECTOR2D(hx, hy + hs * 0.5), // bottom point
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VECTOR2D(hx - hs * 1.5, hy - hs), // left control
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VECTOR2D(hx - hs * 0.5, hy - hs * 1.5), // top control
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VECTOR2D(hx, hy - hs * 0.3), // top middle
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0.0
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);
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// Right half of heart
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gal->DrawCurve(
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VECTOR2D(hx, hy - hs * 0.3), // top middle
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VECTOR2D(hx + hs * 0.5, hy - hs * 1.5), // top control
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VECTOR2D(hx + hs * 1.5, hy - hs), // right control
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VECTOR2D(hx, hy + hs * 0.5), // bottom point
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0.0
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);
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// Control point visualization (draw handles)
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gal->SetStrokeColor(COLOR4D(0.5, 0.5, 0.5, 0.5));
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gal->SetLineWidth(1.0);
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// Show control points for the first curve
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VECTOR2D p0(100, cy - 100);
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VECTOR2D c0(200, cy - 200);
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VECTOR2D c1(300, cy);
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VECTOR2D p1(400, cy - 100);
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gal->DrawLine(p0, c0);
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gal->DrawLine(p1, c1);
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// Draw control point markers
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gal->SetIsFill(true);
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gal->SetIsStroke(false);
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gal->SetFillColor(COLOR4D(1.0, 0.5, 0.0, 0.8));
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gal->DrawCircle(c0, 5);
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gal->DrawCircle(c1, 5);
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gal->SetFillColor(COLOR4D(0.0, 0.5, 1.0, 0.8));
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gal->DrawCircle(p0, 5);
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gal->DrawCircle(p1, 5);
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}
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} // namespace GALTest
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