Implement gr_line() and gr_render_circle()
Change-Id: I63c8dcfa276bbeb550ca051a3a1a0646a2d07dc6
Signed-off-by: Vojtech Bocek <vbocek@gmail.com>
diff --git a/minuitwrp/graphics.c b/minuitwrp/graphics.c
index 7160c7e..0772110 100644
--- a/minuitwrp/graphics.c
+++ b/minuitwrp/graphics.c
@@ -586,6 +586,51 @@
gl->enable(gl, GGL_BLEND);
}
+void gr_line(int x0, int y0, int x1, int y1, int width)
+{
+ GGLContext *gl = gr_context;
+
+ if(gr_is_curr_clr_opaque)
+ gl->disable(gl, GGL_BLEND);
+
+ const int coords0[2] = { x0 << 4, y0 << 4 };
+ const int coords1[2] = { x1 << 4, y1 << 4 };
+ gl->linex(gl, coords0, coords1, width << 4);
+
+ if(gr_is_curr_clr_opaque)
+ gl->enable(gl, GGL_BLEND);
+}
+
+gr_surface gr_render_circle(int radius, unsigned char r, unsigned char g, unsigned char b, unsigned char a)
+{
+ int rx, ry;
+ GGLSurface *surface;
+ const int diameter = radius*2 + 1;
+ const int radius_check = radius*radius + radius*0.8;
+ const uint32_t px = (a << 24) | (b << 16) | (g << 8) | r;
+ uint32_t *data;
+
+ surface = malloc(sizeof(GGLSurface));
+ memset(surface, 0, sizeof(GGLSurface));
+
+ data = malloc(diameter * diameter * 4);
+ memset(data, 0, diameter * diameter * 4);
+
+ surface->version = sizeof(surface);
+ surface->width = diameter;
+ surface->height = diameter;
+ surface->stride = diameter;
+ surface->data = (GGLubyte*)data;
+ surface->format = GGL_PIXEL_FORMAT_RGBA_8888;
+
+ for(ry = -radius; ry <= radius; ++ry)
+ for(rx = -radius; rx <= radius; ++rx)
+ if(rx*rx+ry*ry <= radius_check)
+ *(data + diameter*(radius + ry) + (radius+rx)) = px;
+
+ return surface;
+}
+
void gr_blit(gr_surface source, int sx, int sy, int w, int h, int dx, int dy) {
if (gr_context == NULL) {
return;