bitmap.cpp
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bitmap.cpp
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	#include "r-tech1/funcs.h"
	#include "r-tech1/graphics/bitmap.h"
	#include "r-tech1/file-system.h"
	#include <string>
	#include <stdio.h>
	#include <math.h>

	namespace Graphics{

	static Bitmap * Screen = NULL;
	/* bitmaps that should always be resized to the dimensions of the screen */
	static std::vector<Bitmap*> needResize;

	Util::Parameter<Bitmap*> screenParameter;
	Util::Parameter<Util::ReferenceCount<ShaderManager> > shaderManager;

	ShaderManager::ShaderManager(){
	}

	ShaderManager::~ShaderManager(){
	}

	Util::ReferenceCount<Shader> ShaderManager::getShader(const std::string & name, Util::ReferenceCount<Shader> (*create)()){
	std::map<std::string, Util::ReferenceCount<Shader> >::iterator it = shaders.find(name);
	if (it == shaders.end()){
	shaders[name] = create();
	it = shaders.find(name);
	}

	return it->second;
	}

	/* implementation independant definitions can go here */

	Bitmap * Bitmap::temporary_bitmap = NULL;
	Bitmap * Bitmap::temporary_bitmap2 = NULL;

	/*
	int SCALE_X = 0;
	int SCALE_Y = 0;
	*/

	/*
	const int Bitmap::MODE_TRANS = 0;
	const int Bitmap::MODE_SOLID = 1;
	*/

	const int SPRITE_NO_FLIP = 0;
	const int SPRITE_V_FLIP = 1;
	const int SPRITE_H_FLIP = 2;

	const int SPRITE_NORMAL = 1;
	const int SPRITE_LIT = 2;
	const int SPRITE_TRANS = 3;

	static inline int max(int a, int b){
	return a > b ? a : b;
	}

	INTERNAL_COLOR Color::defaultColor(){
	return makeColor(0, 0, 0).color;
	}

	void initializeExtraStuff();

	Bitmap::Bitmap(Storage::File & file):
	mustResize(false),
	error(false),
	bit8MaskColor(makeColor(0, 0, 0)){
	int length = file.getSize();
	if (length == -1){
	throw BitmapException(__FILE__, __LINE__, std::string("Could not read from file"));
	}
	char * data = new char[length];
	try{
	file.readLine(data, length);
	loadFromMemory(data, length);
	delete[] data;
	} catch (const BitmapException & fail){
	delete[] data;
	throw;
	} catch (...){
	delete[] data;
	throw;
	}
	}

	QualityFilter qualityFilterName(const std::string & type){
	if (type == "xbr"){
	return XbrFilter;
	}
	if (type == "hqx"){
	return HqxFilter;
	}
	return NoFilter;
	}

	Bitmap::~Bitmap(){
	if (mustResize){
	for (std::vector<Bitmap*>::iterator it = needResize.begin(); it != needResize.end(); it++){
	Bitmap * who = *it;
	if (who == this){
	needResize.erase(it);
	break;
	}
	}
	}
	}

	static Bitmap makeTemporaryBitmap(Bitmap *& temporary, int w, int h){
	if (temporary == NULL){
	temporary = new Bitmap(w, h);
	} else if (temporary->getWidth() < w \|\| temporary->getHeight() < h){
	int mw = max(temporary->getWidth(), w);
	int mh = max(temporary->getHeight(), h);
	// printf("Create temporary bitmap %d %d\n", mw, mh);
	delete temporary;
	temporary = new Bitmap(mw, mh);
	}
	if (temporary == NULL){
	printf("bug temporary bitmap is null\n");
	}
	return Bitmap(*temporary, 0, 0, w, h);
	}

	/*
	Bitmap Bitmap::temporaryBitmap(int w, int h){
	return makeTemporaryBitmap(temporary_bitmap, w, h);
	}

	Bitmap Bitmap::temporaryBitmap2(int w, int h){
	return makeTemporaryBitmap(temporary_bitmap2, w, h);
	}
	*/

	void Bitmap::cleanupTemporaryBitmaps(){
	if (temporary_bitmap != NULL){
	delete temporary_bitmap;
	temporary_bitmap = NULL;
	}

	if (temporary_bitmap2 != NULL){
	delete temporary_bitmap2;
	temporary_bitmap2 = NULL;
	}
	}

	Bitmap & Bitmap::operator=(const Bitmap & copy){
	path = copy.getPath();
	this->width = copy.getWidth();
	this->height = copy.getHeight();
	setData(copy.getData());
	return *this;
	}

	double Bitmap::getScale(){
	/* the game is pretty much hard coded to run at 320 scaled upto 640
	* and then scaled to whatever the user wants, but as long as
	* 320 and 640 remain this number will be 2.
	* maybe calculate this at some point
	*/
	return 2;
	/*
	if (Scaler != NULL && Buffer != NULL){
	double x1 = Scaler->getWidth();
	double x2 = Buffer->getWidth();
	return x2 / x1;
	}
	return 1;
	*/
	}

	bool Bitmap::isEmpty() const {
	return getWidth() == 0 \|\| getHeight() == 0;
	}

	/* taken from the color addon from allegro 4.9 */
	static void al_color_cmyk_to_rgb(float cyan, float magenta, float yellow, float key, float red, float green, float *blue){
	float max = 1 - key;
	red = max - cyan max;
	green = max - magenta max;
	blue = max - yellow max;
	}

	void Bitmap::cymkToRGB(int c, int y, int m, int k, int * r, int * g, int * b){
	float fc = (float)c / 255.0;
	float fy = (float)y / 255.0;
	float fm = (float)m / 255.0;
	float fk = (float)k / 255.0;

	float fr, fg, fb;
	al_color_cmyk_to_rgb(fc, fm, fy, fk, &fr, &fg, &fb);
	r = (int)(fr 255.0);
	g = (int)(fg 255.0);
	b = (int)(fb 255.0);
	}

	void Bitmap::updateOnResize(){
	if (!mustResize){
	mustResize = true;
	needResize.push_back(this);
	}
	}

	void Bitmap::updateSize(const int width, const int height){
	if (getWidth() == width && getHeight() == height){
	return;
	}

	Bitmap created(width, height);
	*this = created;
	}

	/* resize the internal bitmap. not guaranteed to destroy the internal bitmap */
	void Bitmap::resize(const int width, const int height){

	/* if internal bitmap is already the proper size, do nothing */
	if (getWidth() == width && getHeight() == height){
	return;
	}

	Bitmap created(width, height);
	Stretch(created);
	*this = created;
	}


	/* decrement bitmap reference counter and free memory if counter hits 0 */
	#if 0
	void Bitmap::releaseInternalBitmap(){
	const int MAGIC_DEBUG = 0xa5a5a5;
	if (own != NULL){
	if (*own == MAGIC_DEBUG){
	printf("[bitmap] Trying to delete an already deleted reference counter %p\n", own);
	}

	(*own) -= 1;
	if ( *own == 0 ){
	*own = MAGIC_DEBUG;
	delete own;
	destroyPrivateData();
	own = NULL;
	}
	}
	}
	#endif

	void Bitmap::BlitToScreen() const {
	// this->Blit( *Bitmap::Screen );
	this->BlitToScreen(0, 0);
	}

	void Bitmap::load( const std::string & str ){
	// releaseInternalBitmap();
	internalLoadFile( str.c_str() );
	}

	Bitmap Bitmap::scaleBy(const double widthRatio, const double heightRatio) const {
	return scaleTo(getWidth() * widthRatio, getHeight() * heightRatio);
	}

	void Bitmap::border( int min, int max, Color color ) const {
	int w = getWidth();
	int h = getHeight();
	for (int i = min; i < max; i++){
	rectangle(i, i, w - 1 - i, h - 1 - i, color);
	}
	}

	void Bitmap::drawHFlip(const int x, const int y, const int startWidth, const int startHeight, const int width, const int height, const Bitmap & where) const {
	drawHFlip(x, y, startWidth, startHeight, width, height, NULL, where);
	}

	void Bitmap::drawHFlip(const int x, const int y, const int startWidth, const int startHeight, const int width, const int height, Filter * filter, const Bitmap & where) const {
	Bitmap sub(*this, getWidth() - width, getHeight() - height, getWidth() - startWidth, getHeight() - startHeight);
	sub.drawHFlip(x + startWidth, y + startHeight, filter, where);
	}

	void Bitmap::drawRotateCenter(const int x, const int y, const int angle, const Bitmap & where){
	drawRotate(x - getWidth() / 2, y - getHeight() / 2, angle, where);
	}

	void Bitmap::drawCenter(const int x, const int y, const Bitmap & where) const {
	draw(x - getWidth() / 2, y - getHeight() / 2, where);
	}

	void Bitmap::drawStretched(const Bitmap & who) const {
	drawStretched(0, 0, who.getWidth(), who.getHeight(), who);
	}

	void Bitmap::draw(const int x, const int y, const int startWidth, const int startHeight, const int width, const int height, const Bitmap & where) const {
	draw(x, y, startWidth, startHeight, width, height, NULL, where);
	/*
	Bitmap sub(*this, startWidth, startHeight, width, height);
	sub.draw(x + startWidth, y + startHeight, where);
	*/
	}

	void Bitmap::draw(const int x, const int y, const int startWidth, const int startHeight, const int width, const int height, Filter * filter, const Bitmap & where) const {
	Bitmap sub(*this, startWidth, startHeight, width, height);
	sub.draw(x + startWidth, y + startHeight, filter, where);
	}

	void Bitmap::horizontalLine( const int x1, const int y, const int x2, const Graphics::Color color ) const{
	this->hLine(x1, y, x2, color);
	}

	void Bitmap::equilateralTriangle(int x, int y, int angle, int size, Color color) const {
	double radians = Util::radians(angle);
	int x1 = x + size / 2 * cos(radians + 2 * Util::pi / 3);
	int y1 = y + size / 2 * sin(radians + 2 * Util::pi / 3);
	int x2 = x + size / 2 * cos(radians - 2 * Util::pi / 3);
	int y2 = y + size / 2 * sin(radians - 2 * Util::pi / 3);
	int x3 = x + size / 2 * cos(radians);
	int y3 = y + size / 2 * sin(radians);
	triangle(x1, y1, x2, y2, x3, y3, color);
	}

	Bitmap Bitmap::greyScale(){
	Bitmap grey(getWidth(), getHeight());

	for (int x = 0; x < getWidth(); x++){
	for (int y = 0; y < getHeight(); y++){
	Color pixel = getPixel(x, y);
	int val = (int)((0.299getRed(pixel) + 0.587getGreen(pixel) + 0.114*getBlue(pixel) + 0.5) + 16);
	if (val > 255){
	val = 255;
	}
	grey.putPixel(x, y, makeColor(val, val, val));
	}
	}

	return grey;
	}

	bool Bitmap::inRange(int x, int y) const {
	int x1 = 0, y1 = 0, x2 = 0, y2 = 0;
	getClipRect(x1, y1, x2, y2);
	return (x >= x1 && x <= x2 &&
	y >= y1 && y <= y2);
	}

	void Bitmap::drawMask( const int _x, const int _y, const Bitmap & where ){
	Color mask = MaskColor();
	for (int x = 0; x < getWidth(); x++){
	for (int y = 0; y < getHeight(); y++){
	if (getPixel(x,y) == mask){
	where.putPixel(x+_x, y+_y, mask);
	}
	}
	}
	}

	void Bitmap::set8BitMaskColor(const Color & color){
	bit8MaskColor = color;
	}

	Color Bitmap::get8BitMaskColor(){
	return bit8MaskColor;
	}

	void Bitmap::setFakeGraphicsMode(int width, int height){
	initializeExtraStuff();
	Screen = new Bitmap(width, height);
	}

	void Bitmap::Blit( const std::string & xpath ) const {
	Bitmap duh(xpath);
	duh.Blit(*this);
	}

	void Bitmap::Blit(const Bitmap & where) const {
	this->Blit(0, 0, where);
	}

	void Bitmap::Blit(const int x, const int y, const Bitmap & where) const {
	Blit(0, 0, x, y, where);
	}

	void Bitmap::Blit(const int mx, const int my, const int wx, const int wy, const Bitmap & where) const {
	Blit(mx, my, getWidth(), getHeight(), wx, wy, where);
	}

	void Bitmap::BlitFromScreen(const int x, const int y) const {
	Screen->Blit(x, y, getWidth(), getHeight(), 0, 0, *this);
	}

	//! min (borrowed from allegro)
	static inline int Min(int x, int y){ return (((x) < (y)) ? (x) : (y)); }

	//! max (borrowed from allegro)
	static inline int Max(int x, int y){ return (((x) > (y)) ? (x) : (y)); }

	//! mid (borrowed from allegro)
	static inline int Mid(int x,int y,int z){ return (Max((x), Min((y), (z)))); }

	int Bitmap::getScreenWidth(){
	if (Screen != 0){
	return Screen->getWidth();
	}
	return 0;
	}

	int Bitmap::getScreenHeight(){
	if (Screen != 0){
	return Screen->getHeight();
	}
	return 0;
	}

	void Bitmap::clear() const {
	fill(makeColor(0, 0, 0));
	}

	void Bitmap::copy(const Bitmap & him){
	resize(him.getWidth(), him.getHeight());
	him.Blit(*this);
	}

	void Bitmap::Stretch( const Bitmap & where ) const {
	if (getWidth() == where.getWidth() && getHeight() == where.getHeight()){
	Blit(where);
	} else {
	Stretch(where, 0, 0, getWidth(), getHeight(), 0, 0, where.getWidth(), where.getHeight());
	}
	}

	void Bitmap::StretchHqx(const Bitmap & where) const {
	if (getWidth() == where.getWidth() && getHeight() == where.getHeight()){
	Blit(where);
	} else {
	StretchHqx(where, 0, 0, getWidth(), getHeight(), 0, 0, where.getWidth(), where.getHeight());
	}
	}

	void Bitmap::StretchXbr(const Bitmap & where) const {
	if (getWidth() == where.getWidth() && getHeight() == where.getHeight()){
	Blit(where);
	} else {
	StretchXbr(where, 0, 0, getWidth(), getHeight(), 0, 0, where.getWidth(), where.getHeight());
	}
	}

	Bitmap Bitmap::aspectRatio(int aspectWidth, int aspectHeight) const {
	double width = getWidth();
	double height = getHeight();

	double ratio = (double) aspectWidth / (double) aspectHeight;

	width = (double) height * ratio;
	if (width > getWidth()){
	width = getWidth();
	height = width / ratio;
	}

	int x = (getWidth() - width) / 2;
	int y = (getHeight() - height) / 2;
	return Bitmap(*this, x, y, (int) width, (int) height);
	}

	Color darken(Color color, double factor ){
	int r = (int)((double)getRed(color) / factor);
	int g = (int)((double)getGreen(color) / factor);
	int b = (int)((double)getBlue(color) / factor);

	return makeColor(r, g, b);
	}

	LitBitmap::LitBitmap(const Bitmap & b):
	Bitmap(b){
	int x1, y1, x2, y2;
	b.getClipRect(x1, y1, x2, y2);
	setClipRect(x1, y1, x2, y2);
	}

	LitBitmap::LitBitmap():
	Bitmap(){
	}

	LitBitmap::~LitBitmap(){
	}

	LitBitmap Bitmap::lit() const {
	return LitBitmap(*this);
	}

	TranslucentBitmap Bitmap::translucent() const {
	return TranslucentBitmap(*this);
	}

	TranslucentBitmap Bitmap::translucent(int red, int green, int blue, int alpha) const {
	transBlender(red, green, blue, alpha);
	return TranslucentBitmap(*this);
	}

	TranslucentBitmap::TranslucentBitmap(const Bitmap & b):
	Bitmap(b){
	int x1, y1, x2, y2;
	b.getClipRect(x1, y1, x2, y2);
	setClipRect(x1, y1, x2, y2);
	}

	TranslucentBitmap::TranslucentBitmap():
	Bitmap(){
	}

	TranslucentBitmap::~TranslucentBitmap(){
	}

	void TranslucentBitmap::fill(Color color) const {
	Bitmap::applyTrans(color);
	}

	int StretchedBitmap::getWidth() const {
	return width;
	}

	int StretchedBitmap::getHeight() const {
	return height;
	}

	double StretchedBitmap::getScaleWidth() const {
	return (double) where.getWidth() / (double) getWidth();
	}

	double StretchedBitmap::getScaleHeight() const {
	return (double) where.getHeight() / (double) getHeight();
	}

	BlendPoint::BlendPoint(const Color & color, int length):
	color(color),
	length(length){
	}

	void blend_palette(Color * pal, int mp, const Color & startColor, const Color & endColor){
	/*
	ASSERT(pal);
	ASSERT(mp != 0);
	*/

	int sc_r = Graphics::getRed(startColor);
	int sc_g = Graphics::getGreen(startColor);
	int sc_b = Graphics::getBlue(startColor);

	int ec_r = Graphics::getRed(endColor);
	int ec_g = Graphics::getGreen(endColor);
	int ec_b = Graphics::getBlue(endColor);

	for ( int q = 0; q < mp; q++ ) {
	float j = (float)( q + 1 ) / (float)( mp );
	int f_r = (int)( 0.5 + (float)( sc_r ) + (float)( ec_r-sc_r ) * j );
	int f_g = (int)( 0.5 + (float)( sc_g ) + (float)( ec_g-sc_g ) * j );
	int f_b = (int)( 0.5 + (float)( sc_b ) + (float)( ec_b-sc_b ) * j );
	pal[q] = Graphics::makeColor( f_r, f_g, f_b );
	}
	}

	std::vector<Color> blend_palette(const std::vector<BlendPoint> & in){
	std::vector<Color> out;

	int here = 0;

	for (int i = 1; i < in.size(); i++){
	const BlendPoint & start = in[here];
	const BlendPoint & end = in[i];

	Color * save = new Color[start.length];
	blend_palette(save, start.length, start.color, end.color);

	for (int use = 0; use < start.length; use++){
	out.push_back(save[use]);
	}

	delete[] save;

	here = i;
	}

	return out;
	}

	}

	#ifdef USE_ALLEGRO
	#include "allegro/bitmap.cpp"
	#endif
	#ifdef USE_SDL
	#include "sdl/bitmap.cpp"
	#endif
	#ifdef USE_ALLEGRO5
	#include "allegro5/bitmap.cpp"
	#endif

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