void test_render_to_normalizing()
{
static unsigned char expected[] = {
0, 0, 0, 0, 127, 127, 127, 255, 0, 0, 0, 0,
127, 127, 127, 255, 255, 255, 255, 255, 127, 127, 127, 255,
0, 0, 0, 0, 127, 127, 127, 255, 0, 0, 0, 0,
};
heatmap_t* hm = heatmap_new(3, 3);
heatmap_add_point_with_stamp(hm, 1, 1, &g_3x3_stamp);
unsigned char img[3*3*4] = {1};
heatmap_render_to(hm, heatmap_cs_b2w, img);
ENSURE_THAT("simple rendered 3x3 heatmap is correct", 0 == memcmp(img, expected, 3*3*4));
heatmap_add_point_with_stamp(hm, 1, 1, &g_3x3_stamp);
heatmap_render_to(hm, heatmap_cs_b2w, img);
ENSURE_THAT("two points on one spot don't change the outcome, due to normalization.", 0 == memcmp(img, expected, 3*3*4));
heatmap_free(hm);
// TODO: (Also try negative and non-one-max stamps?)
}
void test_render_to_nothing()
{
static unsigned char expected[] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};
heatmap_t* hm = heatmap_new(3, 3);
unsigned char img[3*3*4] = {1};
heatmap_render_to(hm, heatmap_cs_b2w, img);
ENSURE_THAT("empty rendered 3x3 heatmap is correct", 0 == memcmp(img, expected, 3*3*4));
heatmap_free(hm);
}
void test_render_to_creation()
{
static unsigned char expected[] = {
0, 0, 0, 0, 127, 127, 127, 255, 0, 0, 0, 0,
127, 127, 127, 255, 255, 255, 255, 255, 127, 127, 127, 255,
0, 0, 0, 0, 127, 127, 127, 255, 0, 0, 0, 0,
};
heatmap_t* hm = heatmap_new(3, 3);
heatmap_add_point_with_stamp(hm, 1, 1, &g_3x3_stamp);
unsigned char* img = heatmap_render_to(hm, heatmap_cs_b2w, nullptr);
ENSURE_THAT("simple rendered 3x3 heatmap is correct", 0 == memcmp(img, expected, 3*3*4));
heatmap_free(hm);
free(img);
}
unsigned char* heatmap_render_default_to(const heatmap_t* h, unsigned char* colorbuf)
{
return heatmap_render_to(h, heatmap_cs_default, colorbuf);
}