1 files changed, 66 insertions, 0 deletions
diff --git a/src/imageDraw.cpp b/src/imageDraw.cpp
new file mode 100644
index 0000000..cd40c4a
--- /dev/null
+++ b/src/imageDraw.cpp
@@ -0,0 +1,66 @@
+#include "FLD.hpp"
+
+FLD::Error
+FLD::Image::draw(const DrawImageOpts &opts) const
+{
+	if (invalid())
+		return -1;
+
+	const bool center = opts.f & CENTER;
+	const bool flip_x = opts.f & FLIP_X;
+	const bool flip_y = opts.f & FLIP_Y;
+
+	const Uint8 r = fld->drawColor.r * 0xff;
+	const Uint8 g = fld->drawColor.g * 0xff;
+	const Uint8 b = fld->drawColor.b * 0xff;
+	const Uint8 a = fld->drawColor.a * 0xff;
+	if (SDL_SetTextureColorMod(ptr, r, g, b) < 0)
+		return fld->sdlError();
+	if (SDL_SetTextureAlphaMod(ptr, a) < 0)
+		return fld->sdlError();
+
+	auto scale_x = opts.sx;
+	auto simg_width = (opts.w == INT_MIN) ? width : opts.w;
+	if (simg_width < 0) {
+		simg_width *= -1;
+		scale_x *= -1;
+	}
+	if (simg_width + opts.ix > width)
+		simg_width = width - opts.ix;
+
+	auto scale_y = opts.sy;
+	auto simg_height = (opts.h == INT_MIN) ? height : opts.h;
+	if (simg_height < 0) {
+		simg_height *= -1;
+		scale_y *= -1;
+	}
+	if (simg_height + opts.iy > height)
+		simg_height = height - opts.iy;
+
+	int flip = 0;
+	flip |= SDL_FLIP_HORIZONTAL * ((scale_x < 0) ^ flip_x);
+	flip |= SDL_FLIP_VERTICAL * ((scale_y < 0) ^ flip_y);
+
+	const int w = simg_width * fabs(scale_x);
+	const int h = simg_height * fabs(scale_y);
+	const int x = opts.p.x - ((scale_x < 0) ? w : 0);
+	const int y = opts.p.y - ((scale_y < 0) ? h : 0);
+
+	const SDL_Rect src {
+		.x = opts.ix,
+		.y = opts.iy,
+		.w = simg_width,
+		.h = simg_height
+	};
+	const SDL_Rect dst {
+		.x = x - (center ? (int)(simg_width * scale_x / 2) : 0),
+		.y = y - (center ? (int)(simg_height * scale_y / 2) : 0),
+		.w = w,
+		.h = h
+	};
+
+	if (SDL_RenderCopyEx(fld->renderer, ptr, &src, &dst, opts.r * 360,
+	                     nullptr, static_cast<SDL_RendererFlip>(flip)) < 0)
+		return fld->sdlError();
+	return 0;
+}