2 commits

Author	SHA1	Message	Date
John McCardle	a702d3cab4	Implement Shape rendering and Transform math for SDL2 backend ... Shape rendering now works: - Shape::draw() generates triangle vertices for fill and outline - RectangleShape, CircleShape, ConvexShape provide getPointCount()/getPoint() - Shapes render with correct fill color, outline color, and outline thickness Transform class fully implemented: - translate(), rotate(), scale() modify the 3x3 affine matrix - transformPoint() applies transform to Vector2f - operator* combines transforms - getInverse() computes inverse transform Transformable::getTransform() now computes proper transform from: - position, rotation, scale, and origin RenderStates now has transform, blendMode, shader members Canvas sizing fixed for Emscripten: - EM_ASM sets canvas size after SDL window creation - SDL_GL_MakeCurrent called after canvas resize Result: RectangleShape UI elements render in correct positions! Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>	2026-01-31 11:58:42 -05:00
John McCardle	c5cc022aa2	Add SDL2+OpenGL ES 2 renderer backend for Emscripten/WebGL ... Implements Phase 1 of renderer abstraction plan: - SDL2Types.h: SFML-compatible type stubs in sf:: namespace - SDL2Renderer.h/cpp: OpenGL ES 2 rendering implementation - EmscriptenStubs.cpp: Stubs for missing POSIX functions (wait3, wait4, wcsftime) Build system changes: - Add MCRF_SDL2 compile-time backend selection - Add Emscripten SDL2 link options (-sUSE_SDL=2, -sFULL_ES2=1) - Fix LONG_BIT mismatch for Emscripten in pyport.h Code changes for SDL2/headless compatibility: - Guard ImGui includes with !MCRF_HEADLESS && !MCRF_SDL2 - Defer GL shader initialization until after context creation Current status: Python runs in browser, rendering WIP (canvas sizing issues) Build commands: emcmake cmake -DMCRF_SDL2=ON -B build-emscripten emmake make -C build-emscripten Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>	2026-01-31 11:13:15 -05:00