1 files changed, 117 insertions, 0 deletions
diff --git a/Plugins/pixels.h b/Plugins/pixels.h
new file mode 100644
index 0000000..4dd1264
--- /dev/null
+++ b/Plugins/pixels.h
@@ -0,0 +1,117 @@
+// Easy iteration thru pixels, see green.cpp and tile.cpp for examples
+// NOTE: using this class could be a bit slower than manipulating the bits directly..
+//
+// changes to 0.20
+// - pixelformat-aware functions red() green() blue() and putrgb()
+// - dot16() dot24() and dot32() added
+// - get/put dot() removed, use above
+
+#include "plugin.h"
+
+#ifndef _PIXELSH
+#define _PIXELSH
+
+class pixels
+{
+private:
+	_frame m_f;
+	pixel8 *p8;	// pointer to a row of 8-bit pixels
+	pixel16 *p16;
+	pixel24 *p24;
+	pixel32 *p32;
+
+	__inline void updaterowp();
+public:
+	int x, y;
+
+	pixels(const _frame &f)
+	{
+		m_f = f;
+		x = -1;
+		y = 0;
+		p8 = 0;
+		next();
+	}
+
+	__inline pixel8 dot8() { return p8[x]; }
+	__inline pixel16 dot16() { return p16[x]; }
+	__inline pixel24 dot24() { return p24[x]; }
+	__inline pixel32 dot32() { return p32[x]; }
+
+	__inline void dot8(pixel8 c) { p8[x] = c; }
+	__inline void dot16(pixel16 c) { p16[x] = c; }
+	__inline void dot24(pixel24 c) { p24[x] = c; }
+	__inline void dot32(pixel32 c) { p32[x] = c; }
+
+	__inline byte red();
+	__inline byte green();
+	__inline byte blue();
+
+	__inline void putrgb(byte r, byte g, byte b);
+
+	__inline void moveto(int tox, int toy)
+	 { if(tox<m_f.width) x=tox; if(toy<m_f.height) { y=toy; updaterowp(); } }
+
+	__inline int eof() { return y==m_f.height ? 1 : 0; }
+	void next();
+};
+
+byte pixels::red()
+{
+	switch(m_f.pixelformat)
+	{
+		case 16: return r16(p16[x]);
+		case 24: return r24(p24[x]);
+		case 32: return r32(p32[x]);
+		default: return 0;
+	}
+}
+
+byte pixels::green()
+{
+	switch(m_f.pixelformat)
+	{
+		case 16: return g16(p16[x]);
+		case 24: return g24(p24[x]);
+		case 32: return g32(p32[x]);
+		default: return 0;
+	}
+}
+
+byte pixels::blue()
+{
+	switch(m_f.pixelformat)
+	{
+		case 16: return b16(p16[x]);
+		case 24: return b24(p24[x]);
+		case 32: return b32(p32[x]);
+		default: return 0;
+	}
+}
+
+void pixels::putrgb(byte r, byte g, byte b)
+{
+	switch(m_f.pixelformat)
+	{
+		case 16: p16[x] = rgbtocolor16(r, g, b); break;
+		case 24: p24[x] = rgbtocolor24(r, g, b); break;
+		case 32: p32[x] = rgbtocolor32(r, g, b); break;
+	}
+}
+
+void pixels::next()
+{
+	x++;
+	if(x==m_f.width) { y++; x=0; p8=0; }
+	if(!p8) updaterowp();
+}
+
+void pixels::updaterowp()
+{
+	p8 = scanline(m_f, y);
+	p16 = (pixel16 *)p8;
+	p24 = (pixel24 *)p8;
+	p32 = (pixel32 *)p8;
+}
+
+#endif // #ifndef _PIXELSH