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tlib/oversampling/WDL/lice/lice_arc.cpp
Chris 989dba5a6b add oversampler
2024-05-24 13:28:31 +02:00

732 lines
28 KiB
C++
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#ifndef WDL_NO_DEFINE_MINMAX
#define WDL_NO_DEFINE_MINMAX
#endif
#include "lice.h"
#include "lice_combine.h"
#include <math.h>
#define _PI 3.141592653589793238f
#define IGNORE_SCALING(mode) ((mode)&LICE_BLIT_IGNORE_SCALING)
template <class T> inline void _SWAP(T& a, T& b) { T tmp = a; a = b; b = tmp; }
#define A(x) ((LICE_pixel_chan)((x)*255.0+0.5))
#define AF(x) (255)
#define DEF_ALPHAS(dim) \
static const LICE_pixel_chan alphas_unfill[] = { __ALPHAS__(A) }; \
static const LICE_pixel_chan alphas_fill[] = { __ALPHAS__(AF) }; \
const LICE_pixel_chan * const alphas = fill ? alphas_fill : alphas_unfill; \
((void)sizeof(char[1 - 2*(sizeof(alphas_unfill) != dim*dim)])); \
((void)sizeof(char[1 - 2*(sizeof(alphas_fill) != dim*dim)]));
static bool CachedCircle(LICE_IBitmap* dest, float cx, float cy, float r, LICE_pixel color, float alpha, int mode, bool aa, bool fill)
{
// fast draw for some small circles
if (r == 1.5f)
{
if (aa)
{
#define __ALPHAS__(B) \
A(0.31), A(1.00), A(1.00), A(0.31), \
A(1.00), B(0.06), B(0.06), A(1.00), \
A(1.00), B(0.06), B(0.06), A(1.00), \
A(0.31), A(1.00), A(1.00), A(0.31),
DEF_ALPHAS(4)
#undef __ALPHAS__
LICE_DrawGlyph(dest, cx-r, cy-r, color, alphas, 4, 4, alpha, mode);
}
else
{
#define __ALPHAS__(B) \
A(0.00), A(1.00), A(1.00), A(0.00), \
A(1.00), B(0.00), B(0.00), A(1.00), \
A(1.00), B(0.00), B(0.00), A(1.00), \
A(0.00), A(1.00), A(1.00), A(0.00),
DEF_ALPHAS(4)
#undef __ALPHAS__
LICE_DrawGlyph(dest, cx-r, cy-r, color, alphas, 4, 4, alpha, mode);
}
return true;
}
else if (r == 2.0f)
{
if (aa)
{
#define __ALPHAS__(B) \
A(0.06), A(0.75), A(1.00), A(0.75), A(0.06), \
A(0.75), A(0.82), B(0.31), A(0.82), A(0.75), \
A(1.00), B(0.31), B(0.00), B(0.31), A(1.00), \
A(0.75), A(0.82), B(0.31), A(0.82), A(0.75), \
A(0.06), A(0.75), A(1.00), A(0.75), A(0.06)
DEF_ALPHAS(5)
#undef __ALPHAS__
LICE_DrawGlyph(dest, cx-r, cy-r, color, alphas, 5, 5, alpha, mode);
}
else
{
#define __ALPHAS__(B) \
A(0.00), A(0.00), A(1.00), A(0.00), A(0.00), \
A(0.00), A(1.00), B(0.00), A(1.00), A(0.00), \
A(1.00), B(0.00), B(0.00), B(0.00), A(1.00), \
A(0.00), A(1.00), B(0.00), A(1.00), A(0.00), \
A(0.00), A(0.00), A(1.00), A(0.00), A(0.00)
DEF_ALPHAS(5)
#undef __ALPHAS__
LICE_DrawGlyph(dest, cx-r, cy-r, color, alphas, 5, 5, alpha, mode);
}
return true;
}
else if (r == 2.5f) {
if (aa) {
#define __ALPHAS__(B) \
A(0.06), A(0.75), A(1.00), A(1.00), A(0.75), A(0.06), \
A(0.75), A(0.82), B(0.31), B(0.31), A(0.82), A(0.75), \
A(1.00), B(0.31), B(0.00), B(0.00), B(0.31), A(1.00), \
A(1.00), B(0.31), B(0.00), B(0.00), B(0.31), A(1.00), \
A(0.75), A(0.82), B(0.31), B(0.31), A(0.82), A(0.75), \
A(0.06), A(0.75), A(1.00), A(1.00), A(0.75), A(0.06)
DEF_ALPHAS(6)
#undef __ALPHAS__
LICE_DrawGlyph(dest, cx-r, cy-r, color, alphas, 6, 6, alpha, mode);
}
else {
#define __ALPHAS__(B) \
A(0.00), A(0.00), A(1.00), A(1.00), A(0.00), A(0.00), \
A(0.00), A(1.00), B(0.00), B(0.00), A(1.00), A(0.00), \
A(1.00), B(0.00), B(0.00), B(0.00), B(0.00), A(1.00), \
A(1.00), B(0.00), B(0.00), B(0.00), B(0.00), A(1.00), \
A(0.00), A(1.00), B(0.00), B(0.00), A(1.00), A(0.00), \
A(0.00), A(0.00), A(1.00), A(1.00), A(0.00), A(0.00)
DEF_ALPHAS(6)
#undef __ALPHAS__
LICE_DrawGlyph(dest, cx-r, cy-r, color, alphas, 6, 6, alpha, mode);
}
return true;
}
else if (r == 3.0f) {
if (aa) {
#define __ALPHAS__(B) \
A(0.00), A(0.56), A(1.00), A(1.00), A(1.00), A(0.56), A(0.00), \
A(0.56), A(1.00), B(0.38), B(0.25), B(0.38), A(1.00), A(0.56), \
A(1.00), B(0.44), B(0.00), B(0.00), B(0.00), B(0.44), A(1.00), \
A(1.00), B(0.19), B(0.00), B(0.00), B(0.00), B(0.19), A(1.00), \
A(1.00), B(0.44), B(0.00), B(0.00), B(0.00), B(0.44), A(1.00), \
A(0.56), A(1.00), B(0.38), B(0.25), B(0.38), A(1.00), A(0.56), \
A(0.00), A(0.56), A(1.00), A(1.00), A(1.00), A(0.56), A(0.00)
DEF_ALPHAS(7)
#undef __ALPHAS__
LICE_DrawGlyph(dest, cx-r, cy-r, color, alphas, 7, 7, alpha, mode);
}
else {
#define __ALPHAS__(B) \
A(0.00), A(0.00), A(1.00), A(1.00), A(1.00), A(0.00), A(0.00), \
A(0.00), A(1.00), B(0.00), B(0.00), B(0.00), A(1.00), A(0.00), \
A(1.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), A(1.00), \
A(1.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), A(1.00), \
A(1.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), A(1.00), \
A(0.00), A(1.00), B(0.00), B(0.00), B(0.00), A(1.00), A(0.00), \
A(0.00), A(0.00), A(1.00), A(1.00), A(1.00), A(0.00), A(0.00)
DEF_ALPHAS(7)
#undef __ALPHAS__
LICE_DrawGlyph(dest, cx-r, cy-r, color, alphas, 7, 7, alpha, mode);
}
return true;
}
else if (r == 3.5f) {
if (aa) {
#define __ALPHAS__(B) \
A(0.00), A(0.31), A(0.87), A(1.00), A(1.00), A(0.87), A(0.31), A(0.00), \
A(0.31), A(1.00), A(0.69), B(0.25), B(0.25), A(0.69), A(1.00), A(0.31), \
A(0.87), A(0.69), B(0.00), B(0.00), B(0.00), B(0.00), A(0.69), A(0.87), \
A(1.00), B(0.25), B(0.00), B(0.00), B(0.00), B(0.00), B(0.25), A(1.00), \
A(1.00), B(0.25), B(0.00), B(0.00), B(0.00), B(0.00), B(0.25), A(1.00), \
A(0.87), A(0.69), B(0.00), B(0.00), B(0.00), B(0.00), A(0.69), A(0.87), \
A(0.31), A(1.00), A(0.69), B(0.25), B(0.25), A(0.69), A(1.00), A(0.31), \
A(0.00), A(0.31), A(0.87), A(1.00), A(1.00), A(0.87), A(0.31), A(0.00)
DEF_ALPHAS(8)
#undef __ALPHAS__
LICE_DrawGlyph(dest, cx-r, cy-r, color, alphas, 8, 8, alpha, mode);
}
else {
#define __ALPHAS__(B) \
A(0.00), A(0.00), A(1.00), A(1.00), A(1.00), A(1.00), A(0.00), A(0.00), \
A(0.00), A(1.00), A(1.00), B(0.00), B(0.00), A(1.00), A(1.00), A(0.00), \
A(1.00), A(1.00), B(0.00), B(0.00), B(0.00), B(0.00), A(1.00), A(1.00), \
A(1.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), A(1.00), \
A(1.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), A(1.00), \
A(1.00), A(1.00), B(0.00), B(0.00), B(0.00), B(0.00), A(1.00), A(1.00), \
A(0.00), A(1.00), A(1.00), B(0.00), B(0.00), A(1.00), A(1.00), A(0.00), \
A(0.00), A(0.00), A(1.00), A(1.00), A(1.00), A(1.00), A(0.00), A(0.00)
DEF_ALPHAS(8)
#undef __ALPHAS__
LICE_DrawGlyph(dest, cx-r, cy-r, color, alphas, 8, 8, alpha, mode);
}
return true;
}
else if (r == 4.0f) {
if (aa) {
#define __ALPHAS__(B) \
A(0.00), A(0.12), A(0.69), A(1.00), A(1.00), A(1.00), A(0.69), A(0.12), A(0.00), \
A(0.12), A(0.94), A(0.82), B(0.31), B(0.25), B(0.31), A(0.82), A(0.94), A(0.12), \
A(0.69), A(0.82), B(0.06), B(0.00), B(0.00), B(0.00), B(0.06), A(0.82), A(0.69), \
A(1.00), B(0.31), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.31), A(1.00), \
A(1.00), B(0.19), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.19), A(1.00), \
A(1.00), B(0.31), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.31), A(1.00), \
A(0.69), A(0.82), B(0.06), B(0.00), B(0.00), B(0.00), B(0.06), A(0.82), A(0.69), \
A(0.12), A(0.94), A(0.82), B(0.31), B(0.25), B(0.31), A(0.82), A(0.94), A(0.12), \
A(0.00), A(0.12), A(0.69), A(1.00), A(1.00), A(1.00), A(0.69), A(0.12), A(0.00)
DEF_ALPHAS(9)
#undef __ALPHAS__
LICE_DrawGlyph(dest, cx-r, cy-r, color, alphas, 9, 9, alpha, mode);
}
else {
#define __ALPHAS__(B) \
A(0.00), A(0.00), A(1.00), A(1.00), A(1.00), A(1.00), A(1.00), A(0.00), A(0.00), \
A(0.00), A(1.00), A(1.00), B(0.00), B(0.00), B(0.00), A(1.00), A(1.00), A(0.00), \
A(1.00), A(1.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), A(1.00), A(1.00), \
A(1.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), A(1.00), \
A(1.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), A(1.00), \
A(1.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), A(1.00), \
A(1.00), A(1.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), A(1.00), A(1.00), \
A(0.00), A(1.00), A(1.00), B(0.00), B(0.00), B(0.00), A(1.00), A(1.00), A(0.00), \
A(0.00), A(0.00), A(1.00), A(1.00), A(1.00), A(1.00), A(1.00), A(0.00), A(0.00)
DEF_ALPHAS(9)
#undef __ALPHAS__
LICE_DrawGlyph(dest, cx-r, cy-r, color, alphas, 9, 9, alpha, mode);
}
return true;
}
else if (r == 5.0f)
{
if (aa) {
#define __ALPHAS__(B) \
A(0.00), A(0.00), A(0.00), A(0.58), A(0.90), A(1.00), A(0.90), A(0.58), A(0.00), A(0.00), A(0.00), \
A(0.00), A(0.00), A(1.00), B(0.42), B(0.10), B(0.00), B(0.10), B(0.42), A(1.00), A(0.00), A(0.00), \
A(0.00), A(1.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), A(1.00), A(0.00), \
A(0.58), B(0.42), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.42), A(0.58), \
A(0.90), B(0.10), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.10), A(0.90), \
A(1.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), A(1.00), \
A(0.90), B(0.10), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.10), A(0.90), \
A(0.58), B(0.42), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.42), A(0.58), \
A(0.00), A(1.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), A(1.00), A(0.00), \
A(0.00), A(0.00), A(1.00), B(0.42), B(0.10), B(0.00), B(0.10), B(0.42), A(1.00), A(0.00), A(0.00), \
A(0.00), A(0.00), A(0.00), A(0.58), A(0.90), A(1.00), A(0.90), A(0.58), A(0.00), A(0.00), A(0.00)
DEF_ALPHAS(11)
#undef __ALPHAS__
LICE_DrawGlyph(dest, cx-r, cy-r, color, alphas, 11, 11, alpha, mode);
return true;
}
}
else if (r == 6.0f)
{
if (aa) {
#define __ALPHAS__(B) \
A(0.00), A(0.00), A(0.00), A(0.20), A(0.66), A(0.92), A(1.00), A(0.92), A(0.66), A(0.20), A(0.00), A(0.00), A(0.00), \
A(0.00), A(0.00), A(0.47), A(0.81), B(0.35), B(0.09), B(0.00), B(0.09), B(0.35), A(0.81), A(0.47), A(0.00), A(0.00), \
A(0.00), A(0.47), B(0.53), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.53), A(0.47), A(0.00), \
A(0.20), A(0.81), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), A(0.81), A(0.20), \
A(0.66), B(0.35), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.35), A(0.66), \
A(0.92), B(0.09), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.09), A(0.92), \
A(1.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), A(1.00), \
A(0.92), B(0.09), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.09), A(0.92), \
A(0.66), B(0.35), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.35), A(0.66), \
A(0.20), A(0.81), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), A(0.81), A(0.20), \
A(0.00), A(0.47), B(0.53), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.53), A(0.47), A(0.00), \
A(0.00), A(0.00), A(0.47), A(0.81), B(0.35), B(0.09), B(0.00), B(0.09), B(0.35), A(0.81), A(0.47), A(0.00), A(0.00), \
A(0.00), A(0.00), A(0.00), A(0.20), A(0.66), A(0.92), A(1.00), A(0.92), A(0.66), A(0.20), A(0.00), A(0.00), A(0.00),
DEF_ALPHAS(13)
#undef __ALPHAS__
LICE_DrawGlyph(dest, cx-r, cy-r, color, alphas, 13, 13, alpha, mode);
return true;
}
}
else if (r == 7.0f)
{
if (aa) {
#define __ALPHAS__(B) \
A(0.00), A(0.00), A(0.00), A(0.00), A(0.33), A(0.71), A(0.93), A(1.00), A(0.93), A(0.71), A(0.33), A(0.00), A(0.00), A(0.00), A(0.00), \
A(0.00), A(0.00), A(0.00), A(0.75), A(0.68), B(0.29), B(0.07), B(0.00), B(0.07), B(0.29), A(0.68), A(0.75), A(0.00), A(0.00), A(0.00), \
A(0.00), A(0.00), A(0.90), B(0.26), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.34), A(0.90), A(0.00), A(0.00), \
A(0.00), A(0.75), B(0.34), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.26), A(0.75), A(0.00), \
A(0.33), A(0.68), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), A(0.68), A(0.33), \
A(0.71), B(0.29), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.29), A(0.71), \
A(0.93), B(0.07), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.07), A(0.93), \
A(1.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), A(1.00), \
A(0.93), B(0.07), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.07), A(0.93), \
A(0.71), B(0.29), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.29), A(0.71), \
A(0.33), A(0.68), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), A(0.68), A(0.33), \
A(0.00), A(0.75), B(0.34), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.26), A(0.75), A(0.00), \
A(0.00), A(0.00), A(0.90), B(0.26), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.00), B(0.34), A(0.90), A(0.00), A(0.00), \
A(0.00), A(0.00), A(0.00), A(0.75), A(0.68), B(0.29), B(0.07), B(0.00), B(0.07), B(0.29), A(0.68), A(0.75), A(0.00), A(0.00), A(0.00), \
A(0.00), A(0.00), A(0.00), A(0.00), A(0.33), A(0.71), A(0.93), A(1.00), A(0.93), A(0.71), A(0.33), A(0.00), A(0.00), A(0.00), A(0.00),
DEF_ALPHAS(15)
#undef __ALPHAS__
LICE_DrawGlyph(dest, cx-r, cy-r, color, alphas, 15, 15, alpha, mode);
return true;
}
}
return false;
}
template <class COMBFUNC> class _LICE_CircleDrawer
{
public:
static void DrawClippedPt(LICE_IBitmap* dest, int x, int y, const int *clip,
int r, int g, int b, int a, int alpha, bool doclip)
{
if (doclip && (x < clip[0] || x >= clip[2] || y < clip[1] || y >= clip[3])) return;
LICE_pixel* px = dest->getBits()+y*dest->getRowSpan()+x;
COMBFUNC::doPix((LICE_pixel_chan*)px, r, g, b, a, alpha);
}
static void DrawClippedHorzLine(LICE_IBitmap* dest, int y, int xlo, int xhi, const int *clip,
int r, int g, int b, int a, int alpha, bool doclip)
{
if (doclip)
{
if (y < clip[1] || y >= clip[3]) return;
xlo = lice_max(xlo, clip[0]);
xhi = lice_min(xhi, clip[2]-1);
}
LICE_pixel* px = dest->getBits()+y*dest->getRowSpan()+xlo;
while (xlo <= xhi)
{
COMBFUNC::doPix((LICE_pixel_chan*)px, r, g, b, a, alpha);
++px;
++xlo;
}
}
static void DrawClippedVertLine(LICE_IBitmap* dest, int x, int ylo, int yhi, const int *clip,
int r, int g, int b, int a, int alpha, bool doclip)
{
if (doclip)
{
if (x < clip[0] || x >= clip[2]) return;
ylo = lice_max(ylo, clip[1]);
yhi = lice_min(yhi, clip[3]-1);
}
int span=dest->getRowSpan();
LICE_pixel* px = dest->getBits()+ylo*span+x;
while (ylo <= yhi)
{
COMBFUNC::doPix((LICE_pixel_chan*)px, r, g, b, a, alpha);
px += span;
++ylo;
}
}
static void DrawClippedCircleAA(LICE_IBitmap* dest, float cx, float cy, float rad,
const int *clip, LICE_pixel color, int ai, bool filled, bool doclip)
{
int r = LICE_GETR(color), g = LICE_GETG(color), b = LICE_GETB(color), a = LICE_GETA(color);
const int cx0=(int)floor(cx+0.5f);
const int cy0=(int)floor(cy+0.5f);
int y=(int)rad;
double w=rad-floor(rad);
int wa=(int)((double)ai*w);
DrawClippedPt(dest, cx0, cy0-y-1, clip, r, g, b, a, wa, doclip);
DrawClippedPt(dest, cx0, cy0+y+1, clip, r, g, b, a, wa, doclip);
DrawClippedPt(dest, cx0-y-1, cy0, clip, r, g, b, a, wa, doclip);
DrawClippedPt(dest, cx0+y+1, cy0, clip, r, g, b, a, wa, doclip);
if (filled)
{
DrawClippedVertLine(dest, cx0, cy0-y, cy0-1, clip, r, g, b, a, ai, doclip);
DrawClippedVertLine(dest, cx0, cy0+1, cy0+y, clip, r, g, b, a, ai, doclip);
DrawClippedHorzLine(dest, cy0, cx0-y, cx0+y, clip, r, g, b, a, ai, doclip);
}
else
{
int iwa=ai-wa;
DrawClippedPt(dest, cx0, cy0-y, clip, r, g, b, a, iwa, doclip);
DrawClippedPt(dest, cx0+y, cy0, clip, r, g, b, a, iwa, doclip);
DrawClippedPt(dest, cx0, cy0+y, clip, r, g, b, a, iwa, doclip);
DrawClippedPt(dest, cx0-y, cy0, clip, r, g, b, a, iwa, doclip);
}
double r2=rad*rad;
double yf=sqrt(r2-1.0);
int yl=(int)(yf+0.5);
int x=1;
while (x <= yl)
{
y=(int)yf;
w=yf-floor(yf);
wa=(int)((double)ai*w);
DrawClippedPt(dest, cx0-x, cy0-y-1, clip, r, g, b, a, wa, doclip);
DrawClippedPt(dest, cx0-x, cy0+y+1, clip, r, g, b, a, wa, doclip);
DrawClippedPt(dest, cx0+x, cy0-y-1, clip, r, g, b, a, wa, doclip);
DrawClippedPt(dest, cx0+x, cy0+y+1, clip, r, g, b, a, wa, doclip);
if (x != yl)
{
DrawClippedPt(dest, cx0-y-1, cy0-x, clip, r, g, b, a, wa, doclip);
DrawClippedPt(dest, cx0+y+1, cy0-x, clip, r, g, b, a, wa, doclip);
DrawClippedPt(dest, cx0-y-1, cy0+x, clip, r, g, b, a, wa, doclip);
DrawClippedPt(dest, cx0+y+1, cy0+x, clip, r, g, b, a, wa, doclip);
}
if (filled)
{
DrawClippedVertLine(dest, cx0-x, cy0-y, cy0-x-1, clip, r, g, b, a, ai, doclip);
DrawClippedVertLine(dest, cx0-x, cy0+x+1, cy0+y, clip, r, g, b, a, ai, doclip);
DrawClippedHorzLine(dest, cy0-x, cx0-y, cx0-x, clip, r, g, b, a, ai, doclip);
DrawClippedHorzLine(dest, cy0-x, cx0+x, cx0+y, clip, r, g, b, a, ai, doclip);
DrawClippedHorzLine(dest, cy0+x, cx0-y, cx0-x, clip, r, g, b, a, ai, doclip);
DrawClippedHorzLine(dest, cy0+x, cx0+x, cx0+y, clip, r, g, b, a, ai, doclip);
DrawClippedVertLine(dest, cx0+x, cy0-y, cy0-x-1, clip, r, g, b, a, ai, doclip);
DrawClippedVertLine(dest, cx0+x, cy0+x+1, cy0+y, clip, r, g, b, a, ai, doclip);
}
else
{
int iwa=ai-wa;
DrawClippedPt(dest, cx0-y, cy0-x, clip, r, g, b, a, iwa, doclip);
DrawClippedPt(dest, cx0+y, cy0-x, clip, r, g, b, a, iwa, doclip);
DrawClippedPt(dest, cx0-x, cy0+y, clip, r, g, b, a, iwa, doclip);
DrawClippedPt(dest, cx0+x, cy0+y, clip, r, g, b, a, iwa, doclip);
if (x != yl)
{
DrawClippedPt(dest, cx0-x, cy0-y, clip, r, g, b, a, iwa, doclip);
DrawClippedPt(dest, cx0+x, cy0-y, clip, r, g, b, a, iwa, doclip);
DrawClippedPt(dest, cx0-y, cy0+x, clip, r, g, b, a, iwa, doclip);
DrawClippedPt(dest, cx0+y, cy0+x, clip, r, g, b, a, iwa, doclip);
}
}
++x;
yf=sqrt(r2-(double)(x*x));
yl=(int)(yf+0.5);
}
}
static void DrawClippedCircle(LICE_IBitmap* dest, float cx, float cy, float rad,
const int *clip, LICE_pixel color, int ai, bool filled, bool doclip)
{
const int r = LICE_GETR(color), g = LICE_GETG(color), b = LICE_GETB(color), a = LICE_GETA(color);
const int cx0=(int)floor(cx+0.5f);
const int cy0=(int)floor(cy+0.5f);
const int r0=(int)(rad+0.5f);
if (filled)
{
DrawClippedVertLine(dest, cx0, cy0-r0, cy0-1, clip, r, g, b, a, ai, doclip);
DrawClippedVertLine(dest, cx0, cy0+1, cy0+r0, clip, r, g, b, a, ai, doclip);
DrawClippedHorzLine(dest, cy0, cx0-r0, cx0+r0, clip, r, g, b, a, ai, doclip);
}
else
{
DrawClippedPt(dest, cx0, cy0-r0, clip, r, g, b, a, ai, doclip);
DrawClippedPt(dest, cx0+r0, cy0, clip, r, g, b, a, ai, doclip);
DrawClippedPt(dest, cx0, cy0+r0, clip, r, g, b, a, ai, doclip);
DrawClippedPt(dest, cx0-r0, cy0, clip, r, g, b, a, ai, doclip);
}
int x=0;
int y=r0;
int e=-r0;
while (++x < y)
{
if (e < 0)
{
e += 2*x+1;
}
else
{
--y;
e += 2*(x-y)+1;
}
if (filled)
{
DrawClippedVertLine(dest, cx0-x, cy0-y, cy0-x-1, clip, r, g, b, a, ai, doclip);
DrawClippedVertLine(dest, cx0-x, cy0+x+1, cy0+y, clip, r, g, b, a, ai, doclip);
DrawClippedHorzLine(dest, cy0-x, cx0-y, cx0-x, clip, r, g, b, a, ai, doclip);
DrawClippedHorzLine(dest, cy0-x, cx0+x, cx0+y, clip, r, g, b, a, ai, doclip);
DrawClippedHorzLine(dest, cy0+x, cx0-y, cx0-x, clip, r, g, b, a, ai, doclip);
DrawClippedHorzLine(dest, cy0+x, cx0+x, cx0+y, clip, r, g, b, a, ai, doclip);
DrawClippedVertLine(dest, cx0+x, cy0-y, cy0-x-1, clip, r, g, b, a, ai, doclip);
DrawClippedVertLine(dest, cx0+ x, cy0+x+1, cy0+y, clip, r, g, b, a, ai, doclip);
}
else
{
DrawClippedPt(dest, cx0-x, cy0-y, clip, r, g, b, a, ai, doclip);
DrawClippedPt(dest, cx0-x, cy0+y, clip, r, g, b, a, ai, doclip);
DrawClippedPt(dest, cx0+x, cy0-y, clip, r, g, b, a, ai, doclip);
DrawClippedPt(dest, cx0+x, cy0+y, clip, r, g, b, a, ai, doclip);
if (x != y)
{
DrawClippedPt(dest, cx0-y, cy0-x, clip, r, g, b, a, ai, doclip);
DrawClippedPt(dest, cx0-y, cy0+x, clip, r, g, b, a, ai, doclip);
DrawClippedPt(dest, cx0+y, cy0-x, clip, r, g, b, a, ai, doclip);
DrawClippedPt(dest, cx0+y, cy0+x, clip, r, g, b, a, ai, doclip);
}
}
}
}
};
static void __DrawCircleClipped(LICE_IBitmap* dest, float cx, float cy, float rad,
LICE_pixel color, int ia, bool aa, bool filled, int mode, const int *clip, bool doclip)
{
// todo: more clipped/filled versions (to optimize constants out?)
if (aa)
{
#define __LICE__ACTION(COMBFUNC) _LICE_CircleDrawer<COMBFUNC>::DrawClippedCircleAA(dest, cx, cy, rad, clip, color, ia, filled, doclip)
__LICE_ACTION_NOSRCALPHA(mode, ia,false)
#undef __LICE__ACTION
}
else
{
#define __LICE__ACTION(COMBFUNC) _LICE_CircleDrawer<COMBFUNC>::DrawClippedCircle(dest, cx, cy, rad, clip, color, ia, filled, doclip)
__LICE_ACTION_CONSTANTALPHA(mode,ia,false)
#undef __LICE__ACTION
}
}
static void __DrawArc(int w, int h, LICE_IBitmap* dest, float cx, float cy, float rad, double anglo, double anghi,
LICE_pixel color, int ialpha, bool aa, int mode)
{
const int __sc = (int)dest->Extended(LICE_EXT_GET_SCALING,NULL);
if (__sc>0)
{
__LICE_SCU(w);
__LICE_SCU(h);
if (!IGNORE_SCALING(mode))
{
__LICE_SC(cx);
__LICE_SC(cy);
__LICE_SC(rad);
}
}
// -2PI <= anglo <= anghi <= 2PI
anglo += 2.0*_PI;
anghi += 2.0*_PI;
// 0 <= anglo <= anghi <= 4PI
double next_ang = anglo - fmod(anglo,0.5*_PI);
int ly = (int)floor(cy - rad*cos(anglo) + 0.5);
int lx = (int)floor(cx + rad*sin(anglo) + 0.5);
while (anglo < anghi)
{
next_ang += 0.5*_PI;
if (next_ang > anghi) next_ang = anghi;
int yhi = (int) floor(cy-rad*cos(next_ang)+0.5);
int xhi = (int) floor(cx+rad*sin(next_ang)+0.5);
int ylo = ly;
int xlo = lx;
ly = yhi;
lx = xhi;
if (yhi < ylo) { int tmp = ylo; ylo = yhi; yhi=tmp; }
if (xhi < xlo) { int tmp = xlo; xlo = xhi; xhi=tmp; }
anglo = next_ang;
if (xhi != cx) xhi++;
if (yhi != cy) yhi++;
const int clip[4]={lice_max(xlo,0),lice_max(0, ylo),lice_min(w,xhi+1),lice_min(h, yhi+1)};
__DrawCircleClipped(dest,cx,cy,rad,color,ialpha,aa,false,mode,clip,true);
}
}
void LICE_Arc(LICE_IBitmap* dest, float cx, float cy, float r, float minAngle, float maxAngle,
LICE_pixel color, float alpha, int mode, bool aa)
{
if (!dest) return;
if (dest->isFlipped()) { cy=dest->getHeight()-1-cy; minAngle=_PI-minAngle; maxAngle=_PI-maxAngle; }
if (maxAngle < minAngle)
{
float tmp=maxAngle;
maxAngle=minAngle;
minAngle=tmp;
}
if (maxAngle - minAngle >= 2.0f*_PI)
{
LICE_Circle(dest,cx,cy,r,color,alpha,mode,aa);
return;
}
if (maxAngle >= 2.0f*_PI)
{
float tmp = fmod(maxAngle,2.0f*_PI);
minAngle -= maxAngle - tmp; // reduce by factors of 2PI
maxAngle = tmp;
}
else if (minAngle <= -2.0f*_PI)
{
float tmp = fmod(minAngle,2.0f*_PI);
maxAngle -= minAngle - tmp; // toward zero by factors of 2pi
minAngle = tmp;
}
// -2PI <= minAngle <= maxAngle <= 2PI
int ia = (int) (alpha*256.0f);
if (!ia) return;
__DrawArc(dest->getWidth(),dest->getHeight(),dest,cx,cy,r,minAngle,maxAngle,color,ia,aa,mode);
}
void LICE_Circle(LICE_IBitmap* dest, float cx, float cy, float r, LICE_pixel color, float alpha, int mode, bool aa)
{
if (!dest) return;
int w = dest->getWidth(), h = dest->getHeight();
const int __sc = (int)dest->Extended(LICE_EXT_GET_SCALING,NULL);
if (__sc>0)
{
__LICE_SCU(w);
__LICE_SCU(h);
if (!IGNORE_SCALING(mode))
{
__LICE_SC(cx);
__LICE_SC(cy);
__LICE_SC(r);
}
}
const int clip[4] = { 0, 0, w, h };
if (w < 1 || h <1 || r<0 ||
(int)cx+(int)r < -2 || (int)cy + (int)r < - 2 ||
(int)cx-(int)r > w + 2 || (int)cy - (int)r > h + 2
) return;
int ia = (int) (alpha*256.0f);
if (!ia) return;
if (CachedCircle(dest, cx, cy, r, color, alpha, mode|LICE_BLIT_IGNORE_SCALING, aa, false)) return;
if (dest->isFlipped()) cy=h-1-cy;
const bool doclip = !(cx-r-2 >= 0 && cy-r-2 >= 0 && cx+r+2 < w && cy+r+2 < h);
__DrawCircleClipped(dest,cx,cy,r,color,ia,aa,false,mode,clip,doclip);
}
void LICE_FillCircle(LICE_IBitmap* dest, float cx, float cy, float r, LICE_pixel color, float alpha, int mode, bool aa)
{
if (!dest) return;
int w = dest->getWidth(), h = dest->getHeight();
const int __sc = (int)dest->Extended(LICE_EXT_GET_SCALING,NULL);
if (__sc>0)
{
__LICE_SCU(w);
__LICE_SCU(h);
if (!IGNORE_SCALING(mode))
{
__LICE_SC(cx);
__LICE_SC(cy);
__LICE_SC(r);
}
}
if (w < 1 || h < 1 || r < 0.0 ||
(int)cx+(int)r < -2 || (int)cy + (int)r < - 2 ||
(int)cx-(int)r > w + 2 || (int)cy - (int)r > h + 2
) return;
const int ia = (int) (alpha*256.0f);
if (!ia) return;
if (CachedCircle(dest, cx, cy, r, color, alpha, mode|LICE_BLIT_IGNORE_SCALING, aa, true)) return;
if (dest->isFlipped()) cy=h-1-cy;
const int clip[4] = { 0, 0, w, h };
const bool doclip = !(cx-r-2 >= 0 && cy-r-2 >= 0 && cx+r+2 < w && cy+r+2 < h);
__DrawCircleClipped(dest,cx,cy,r,color,ia,aa,true,mode,clip,doclip);
}
void LICE_RoundRect(LICE_IBitmap *drawbm, float xpos, float ypos, float w, float h, int cornerradius,
LICE_pixel col, float alpha, int mode, bool aa)
{
xpos = floor(xpos+0.5);
ypos = floor(ypos+0.5);
w = floor(w+0.5);
h = floor(h+0.5);
if (cornerradius>0)
{
float cr=cornerradius;
if (cr > w*0.5) cr=w*0.5;
if (cr > h*0.5) cr=h*0.5;
cr=floor(cr);
if (cr>=2)
{
double adj = 0.0;
const int __sc = IGNORE_SCALING(mode) ? 0 : drawbm ? (int)drawbm->Extended(LICE_EXT_GET_SCALING,NULL) : 0;
if (__sc>0)
{
adj = 1.0 - 256.0/__sc;
LICE_FLine(drawbm,xpos+cr+adj,ypos+adj,xpos+w-cr,ypos+adj,col,alpha,mode,true);
LICE_FLine(drawbm,xpos+cr-1+adj,ypos+h-adj,xpos+w-cr-adj,ypos+h-adj,col,alpha,mode,true);
LICE_FLine(drawbm,xpos+w-adj,ypos+cr+adj,xpos+w-adj,ypos+h-cr-adj,col,alpha,mode,true);
LICE_FLine(drawbm,xpos+adj,ypos+cr-1+adj,xpos+adj,ypos+h-cr-adj,col,alpha,mode,true);
// aa=true;
}
else
{
LICE_Line(drawbm,xpos+cr,ypos,xpos+w-cr,ypos,col,alpha,mode,aa);
LICE_Line(drawbm,xpos+cr-1,ypos+h,xpos+w-cr,ypos+h,col,alpha,mode,aa);
LICE_Line(drawbm,xpos+w,ypos+cr,xpos+w,ypos+h-cr,col,alpha,mode,aa);
LICE_Line(drawbm,xpos,ypos+cr-1,xpos,ypos+h-cr,col,alpha,mode,aa);
}
LICE_Arc(drawbm,xpos+cr+adj,ypos+cr+adj,cr,-_PI*0.5f,0,col,alpha,mode,aa);
LICE_Arc(drawbm,xpos+w-cr-adj,ypos+cr+adj,cr,0,_PI*0.5f,col,alpha,mode,aa);
LICE_Arc(drawbm,xpos+w-cr-adj,ypos+h-cr-adj,cr,_PI*0.5f,_PI,col,alpha,mode,aa);
LICE_Arc(drawbm,xpos+cr+adj,ypos+h-cr-adj,cr,_PI,_PI*1.5f,col,alpha,mode,aa);
return;
}
}
LICE_DrawRect(drawbm, (int)xpos, (int)ypos, (int)w, (int)h, col, alpha, mode);
}
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