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AnimationInfo.cpp
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AnimationInfo.cpp
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/* -*- C++ -*-
*
* AnimationInfo.cpp - General image storage class of ONScripter-EN
*
* Copyright (c) 2001-2011 Ogapee. All rights reserved.
* (original ONScripter, of which this is a fork).
*
* ogapee@aqua.dti2.ne.jp
*
* Copyright (c) 2007-2011 "Uncle" Mion Sonozaki
*
* UncleMion@gmail.com
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>
* or write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "AnimationInfo.h"
#include "BaseReader.h"
#include "graphics_sum.h"
#include "graphics_blend.h"
#include "graphics_resize.h"
#include <math.h>
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
#if !defined(BPP16)
static bool is_inv_alpha_lut_initialized = false;
static Uint32 inv_alpha_lut[256];
#endif
#ifdef BPP16
#define SET_PIXEL(rgb, alpha) {\
*dst_buffer = (rgb);\
*alphap++ = (alpha);\
}
#define SET_PIXEL32TO16(rgb, alpha) {\
*img_buffer = (((rgb)&0xf80000) >> 8) | (((rgb)&0xfc00) >> 5) | (((rgb)&0xf8) >> 3);\
*alphap++ = (alpha);\
}
#else
#define SET_PIXEL(rgb, alpha) {\
*dst_buffer = (rgb);\
*alphap = (alpha);\
alphap += 4;\
}
#endif //BPP16
AnimationInfo::AnimationInfo()
//Using an initialization list to make sure pointers start out NULL
: duration_list(NULL), color_list(NULL),
file_name(NULL), mask_file_name(NULL), image_name(NULL),
image_surface(NULL), alpha_buf(NULL)
{
is_copy = false;
stale_image = true;
trans_mode = TRANS_TOPLEFT;
affine_flag = false;
#if !defined(BPP16)
if (!is_inv_alpha_lut_initialized){
inv_alpha_lut[0] = 255;
for (int i=1; i<255; i++)
inv_alpha_lut[i] = (Uint32)(0xffff / i);
is_inv_alpha_lut_initialized = true;
}
#endif
reset();
}
AnimationInfo::AnimationInfo(const AnimationInfo &anim)
{
memcpy(this, &anim, sizeof(AnimationInfo));
is_copy = true;
}
AnimationInfo::~AnimationInfo()
{
if (!is_copy) reset();
}
AnimationInfo& AnimationInfo::operator =(const AnimationInfo &anim)
{
if (this != &anim){
memcpy(this, &anim, sizeof(AnimationInfo));
is_copy = true;
}
return *this;
}
//deepcopy everything but the image surface
void AnimationInfo::deepcopyTag(const AnimationInfo &anim)
{
if (this == &anim) return;
//clear old stuff first
reset();
//copy the whole object
memcpy(this, &anim, sizeof(AnimationInfo));
//unset the image_surface due to danger of accidental deletion
image_surface = NULL;
alpha_buf = NULL;
//now set dynamic variables
if (anim.duration_list){
duration_list = new int[num_of_cells];
memcpy(duration_list, anim.duration_list,
sizeof(int)*num_of_cells);
}
if (anim.color_list){
color_list = new uchar3[num_of_cells];
memcpy(color_list, anim.color_list,
sizeof(uchar3)*num_of_cells);
}
if (anim.image_name){
image_name = new char[ strlen(anim.image_name) + 1 ];
strcpy( image_name, anim.image_name );
}
if (anim.file_name){
file_name = new char[ strlen(anim.file_name) + 1 ];
strcpy( file_name, anim.file_name );
}
if (anim.mask_file_name){
mask_file_name = new char[ strlen(anim.mask_file_name) + 1 ];
strcpy( mask_file_name, anim.mask_file_name );
}
}
void AnimationInfo::deepcopy(const AnimationInfo &anim)
{
if (this == &anim) return;
deepcopyTag(anim);
if (anim.image_surface){
int w = anim.image_surface->w, h = anim.image_surface->h;
allocImage( w, h );
copySurface(anim.image_surface, NULL);
#ifdef BPP16
if (anim.alpha_buf)
memcpy(alpha_buf, anim.alpha_buf, w*h);
#endif
}
}
void AnimationInfo::reset()
{
remove();
trans = 256;
orig_pos.x = orig_pos.y = 0;
orig_pos.w = orig_pos.h = 0;
pos.x = pos.y = 0;
pos.w = pos.h = 0;
visible = false;
abs_flag = true;
scale_x = scale_y = rot = 0;
blending_mode = BLEND_NORMAL;
font_size_xy[0] = font_size_xy[1] = -1;
font_pitch = -1;
mat[0][0] = 1024;
mat[0][1] = 0;
mat[1][0] = 0;
mat[1][1] = 1024;
#ifndef NO_LAYER_EFFECTS
layer_no = -1;
#endif
}
void AnimationInfo::deleteImageName(){
if ( !is_copy && image_name ) delete[] image_name;
image_name = NULL;
}
void AnimationInfo::setImageName( const char *name ){
deleteImageName();
image_name = new char[ strlen(name) + 1 ];
strcpy( image_name, name );
}
void AnimationInfo::deleteImage(){
if (!is_copy) {
if ( image_surface ) SDL_FreeSurface( image_surface );
#ifdef BPP16
if (alpha_buf) delete[] alpha_buf;
#endif
}
image_surface = NULL;
alpha_buf = NULL;
stale_image = true;
}
void AnimationInfo::remove(){
deleteImageName();
deleteImage();
removeTag();
}
void AnimationInfo::removeTag(){
if (!is_copy) {
if ( duration_list ) delete[] duration_list;
if ( color_list ) delete[] color_list;
if ( file_name ) delete[] file_name;
if ( mask_file_name ) delete[] mask_file_name;
}
duration_list = NULL;
color_list = NULL;
file_name = NULL;
mask_file_name = NULL;
current_cell = 0;
num_of_cells = 0;
remaining_time = 0;
is_animatable = false;
is_single_line = true;
is_tight_region = true;
is_ruby_drawable = false;
skip_whitespace = true;
direction = 1;
color[0] = color[1] = color[2] = 0;
}
// 0 ... restart at the end
// 1 ... stop at the end
// 2 ... reverse at the end
// 3 ... no animation
bool AnimationInfo::proceedAnimation()
{
bool is_changed = false;
if ( loop_mode != 3 && num_of_cells > 1 ){
current_cell += direction;
is_changed = true;
}
if ( current_cell < 0 ){ // loop_mode must be 2
current_cell = 1;
direction = 1;
}
else if ( current_cell >= num_of_cells ){
if ( loop_mode == 0 ){
current_cell = 0;
}
else if ( loop_mode == 1 ){
current_cell = num_of_cells - 1;
is_changed = false;
}
else{
current_cell = num_of_cells - 2;
direction = -1;
}
}
remaining_time = duration_list[ current_cell ];
return is_changed;
}
void AnimationInfo::setCell(int cell)
{
if (cell < 0) cell = 0;
else if (cell >= num_of_cells) cell = num_of_cells - 1;
current_cell = cell;
}
int AnimationInfo::doClipping( SDL_Rect *dst, SDL_Rect *clip, SDL_Rect *clipped )
{
if ( clipped ) clipped->x = clipped->y = 0;
if ( !dst ||
dst->x >= clip->x + clip->w || dst->x + dst->w <= clip->x ||
dst->y >= clip->y + clip->h || dst->y + dst->h <= clip->y )
return -1;
if ( dst->x < clip->x ){
dst->w -= clip->x - dst->x;
if ( clipped ) clipped->x = clip->x - dst->x;
dst->x = clip->x;
}
if ( clip->x + clip->w < dst->x + dst->w ){
dst->w = clip->x + clip->w - dst->x;
}
if ( dst->y < clip->y ){
dst->h -= clip->y - dst->y;
if ( clipped ) clipped->y = clip->y - dst->y;
dst->y = clip->y;
}
if ( clip->y + clip->h < dst->y + dst->h ){
dst->h = clip->y + clip->h - dst->y;
}
if ( clipped ){
clipped->w = dst->w;
clipped->h = dst->h;
}
return 0;
}
SDL_Rect AnimationInfo::findOpaquePoint(SDL_Rect *clip)
//find the first opaque-enough pixel position for transbtn
{
int cell_width = image_surface->w/num_of_cells;
SDL_Rect cliprect = {0, 0, cell_width, image_surface->h};
if (clip) cliprect = *clip;
#ifdef BPP16
const int psize = 1;
unsigned char *alphap = alpha_buf;
#else
const int psize = 4;
unsigned char *alphap = (unsigned char *)image_surface->pixels;
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
alphap += 3;
#endif
#endif
SDL_Rect ret = {0, 0, 0, 0};
for (int i=cliprect.y ; i<cliprect.h ; ++i){
for (int j=cliprect.x ; j<cliprect.w ; ++j){
int alpha = *(alphap + (image_surface->w * i + j) * psize);
if (alpha > TRANSBTN_CUTOFF){
ret.x = j;
ret.y = i;
//want to break out of the for loops
i = cliprect.h;
break;
}
}
}
//want to find a pixel that's opaque across all cells, if possible
int xstart = ret.x;
for (int i=ret.y ; i<cliprect.h ; ++i){
for (int j=xstart ; j<cliprect.w ; ++j){
bool is_opaque = true;
for (int k=0 ; k<num_of_cells ; ++k){
int alpha = *(alphap + (image_surface->w * i + cell_width * k + j) * psize);
if (alpha <= TRANSBTN_CUTOFF){
is_opaque = false;
break;
}
}
if (is_opaque){
ret.x = j;
ret.y = i;
//want to break out of the for loops
i = cliprect.h;
break;
}
xstart = cliprect.x;
}
}
return ret;
}
int AnimationInfo::getPixelAlpha( int x, int y )
{
#ifdef BPP16
unsigned char *alphap = alpha_buf + image_surface->w * y + x +
image_surface->w*current_cell/num_of_cells;
#else
const int psize = 4;
const int total_width = image_surface->w * psize;
unsigned char *alphap = (unsigned char *)image_surface->pixels +
total_width * current_cell/num_of_cells +
total_width * y + x * psize;
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
alphap += 3;
#endif
#endif
return (int) *alphap;
}
void AnimationInfo::blendOnSurface( SDL_Surface *dst_surface, int dst_x, int dst_y,
SDL_Rect &clip, int alpha )
{
if ( image_surface == NULL ) return;
if ( alpha == 0 ) return;
SDL_Rect dst_rect = {dst_x, dst_y, pos.w, pos.h}, src_rect;
if ( doClipping( &dst_rect, &clip, &src_rect ) ) return;
/* ---------------------------------------- */
SDL_LockSurface( dst_surface );
SDL_LockSurface( image_surface );
#ifdef BPP16
const int total_width = image_surface->pitch / 2;
#else
const int total_width = image_surface->pitch / 4;
#endif
ONSBuf *src_buffer = (ONSBuf *)image_surface->pixels + total_width * src_rect.y + image_surface->w*current_cell/num_of_cells + src_rect.x;
ONSBuf *dst_buffer = (ONSBuf *)dst_surface->pixels + dst_surface->w * dst_rect.y + dst_rect.x;
#ifdef BPP16
unsigned char *alphap = alpha_buf + image_surface->w * src_rect.y + image_surface->w*current_cell/num_of_cells + src_rect.x;
#else
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
unsigned char *alphap = (unsigned char *)src_buffer + 3;
#else
unsigned char *alphap = (unsigned char *)src_buffer;
#endif
#endif
if (blending_mode == BLEND_NORMAL) {
if ((trans_mode == TRANS_COPY) && (alpha == 256)) {
ONSBuf* srcmax = (ONSBuf*)image_surface->pixels +
image_surface->w * image_surface->h;
for (int i=dst_rect.h ; i!=0 ; i--){
for (int j=dst_rect.w ; j!=0 ; j--, src_buffer++, dst_buffer++){
// If we've run out of source area, ignore the remainder.
if (src_buffer >= srcmax) goto break2;
SET_PIXEL(*src_buffer, 0xff);
}
src_buffer += total_width - dst_rect.w;
#ifdef BPP16
alphap += image_surface->w - dst_rect.w;
#else
alphap += (image_surface->w - dst_rect.w)*4;
#endif
dst_buffer += dst_surface->w - dst_rect.w;
}
} else {
ONSBuf* srcmax = (ONSBuf*)image_surface->pixels +
image_surface->w * image_surface->h;
for (int i=dst_rect.h ; i!=0 ; i--){
#if !defined(BPP16)
if (src_buffer >= srcmax) goto break2;
ons_gfx::imageFilterBlend(dst_buffer, src_buffer, alphap, alpha, dst_rect.w);
src_buffer += total_width;
dst_buffer += dst_surface->w;
alphap += (image_surface->w)*4;
#else //!BPP16
for (int j=dst_rect.w ; j!=0 ; j--, src_buffer++, dst_buffer++){
// If we've run out of source area, ignore the remainder.
if (src_buffer >= srcmax) goto break2;
BLEND_PIXEL();
}
src_buffer += total_width - dst_rect.w;
dst_buffer += dst_surface->w - dst_rect.w;
#ifdef BPP16
alphap += image_surface->w - dst_rect.w;
#else
alphap += (image_surface->w - dst_rect.w)*4;
#endif //BPP16
#endif
}
}
#ifndef NO_LAYER_EFFECTS // currently only the "rain" layer uses this section
} else if (blending_mode == BLEND_ADD) {
#ifndef BPP16
if ((trans_mode == TRANS_COPY) && (alpha == 256)) {
// "add" the src pix value to the dst
Uint8* srcmax = (Uint8*) ((Uint32*)image_surface->pixels +
image_surface->w * image_surface->h);
Uint8* src_buf = (Uint8*) src_buffer;
Uint8* dst_buf = (Uint8*) dst_buffer;
for (int i=dst_rect.h ; i!=0 ; i--){
if (src_buf >= srcmax) goto break2;
ons_gfx::imageFilterAddTo(dst_buf, src_buf, dst_rect.w*4);
src_buf += total_width * 4;
dst_buf += dst_surface->w * 4;
}
} else
#endif //!BPP16
{
// gotta do additive alpha blending
ONSBuf* srcmax = (ONSBuf*)image_surface->pixels +
image_surface->w * image_surface->h;
for (int i=dst_rect.h ; i!=0 ; i--){
for (int j=dst_rect.w ; j!=0 ; j--, src_buffer++, dst_buffer++){
// If we've run out of source area, ignore the remainder.
if (src_buffer >= srcmax) goto break2;
ADDBLEND_PIXEL();
}
src_buffer += total_width - dst_rect.w;
#ifdef BPP16
alphap += image_surface->w - dst_rect.w;
#else
alphap += (image_surface->w - dst_rect.w)*4;
#endif
dst_buffer += dst_surface->w - dst_rect.w;
}
}
#endif // !NO_LAYER_EFFECTS
#if 0 // currently no non-affine routines use subtractive blending
} else if (blending_mode == BLEND_SUB) {
#ifndef BPP16
if ((trans_mode == TRANS_COPY) && (alpha == 256)) {
// "subtract" the src pix value from the dst
Uint8* srcmax = (Uint8*) ((Uint32*)image_surface->pixels +
image_surface->w * image_surface->h);
Uint8* src_buf = (Uint8*) src_buffer;
Uint8* dst_buf = (Uint8*) dst_buffer;
for (int i=dst_rect.h ; i!=0 ; i--){
if (src_buf >= srcmax) goto break2;
ons_gfx::imageFilterSubFrom(dst_buf, src_buf, dst_rect.w*4);
src_buf += total_width * 4;
dst_buf += dst_surface->w * 4;
}
} else
#endif //!BPP16
{
// gotta do subtractive alpha blending
ONSBuf* srcmax = (ONSBuf*)image_surface->pixels +
image_surface->w * image_surface->h;
for (int i=dst_rect.h ; i!=0 ; i--){
for (int j=dst_rect.w ; j!=0 ; j--, src_buffer++, dst_buffer++){
// If we've run out of source area, ignore the remainder.
if (src_buffer >= srcmax) goto break2;
SUBBLEND_PIXEL();
}
src_buffer += total_width - dst_rect.w;
#ifdef BPP16
alphap += image_surface->w - dst_rect.w;
#else
alphap += (image_surface->w - dst_rect.w)*4;
#endif
dst_buffer += dst_surface->w - dst_rect.w;
}
}
#endif //0
}
break2:
SDL_UnlockSurface( image_surface );
SDL_UnlockSurface( dst_surface );
}
void AnimationInfo::blendOnSurface2( SDL_Surface *dst_surface, int dst_x, int dst_y,
SDL_Rect &clip, int alpha )
{
if ( image_surface == NULL ) return;
if ( alpha == 0 ) return;
if (scale_x == 0 || scale_y == 0) return;
int i, x=0, y=0;
// project corner point and calculate bounding box
int min_xy[2]={bounding_rect.x, bounding_rect.y};
int max_xy[2]={bounding_rect.x+bounding_rect.w-1,
bounding_rect.y+bounding_rect.h-1};
// clip bounding box
if (max_xy[0] < clip.x) return;
if (max_xy[0] >= (clip.x + clip.w)) max_xy[0] = clip.x + clip.w - 1;
if (min_xy[0] >= (clip.x + clip.w)) return;
if (min_xy[0] < clip.x) min_xy[0] = clip.x;
if (max_xy[1] < clip.y) return;
if (max_xy[1] >= (clip.y + clip.h)) max_xy[1] = clip.y + clip.h - 1;
if (min_xy[1] >= (clip.y + clip.h)) return;
if (min_xy[1] < clip.y) min_xy[1] = clip.y;
if (min_xy[1] < 0) min_xy[1] = 0;
if (max_xy[1] >= dst_surface->h) max_xy[1] = dst_surface->h - 1;
SDL_LockSurface( dst_surface );
SDL_LockSurface( image_surface );
#ifdef BPP16
int total_width = image_surface->pitch / 2;
#else
int total_width = image_surface->pitch / 4;
#endif
// set pixel by inverse-projection with raster scan
for (y=min_xy[1] ; y<= max_xy[1] ; y++){
// calculate the start and end point for each raster scan
int raster_min = min_xy[0], raster_max = max_xy[0];
for (i=0 ; i<4 ; i++){
int i2 = (i+1)&3; // = (i+1)%4
if (corner_xy[i][1] == corner_xy[i2][1]) continue;
x = (corner_xy[i2][0] - corner_xy[i][0])*(y-corner_xy[i][1])/(corner_xy[i2][1] - corner_xy[i][1]) + corner_xy[i][0];
if (corner_xy[i2][1] - corner_xy[i][1] > 0){
if (raster_min < x) raster_min = x;
}
else{
if (raster_max > x) raster_max = x;
}
}
if (raster_min < 0) raster_min = 0;
if (raster_max >= dst_surface->w) raster_max = dst_surface->w - 1;
ONSBuf *dst_buffer = (ONSBuf *)dst_surface->pixels + dst_surface->w * y + raster_min;
// inverse-projection
int x_offset2 = (inv_mat[0][1] * (y-dst_y) >> 9) + pos.w;
int y_offset2 = (inv_mat[1][1] * (y-dst_y) >> 9) + pos.h;
for (x=raster_min-dst_x ; x<=raster_max-dst_x ; x++, dst_buffer++){
int x2 = ((inv_mat[0][0] * x >> 9) + x_offset2) / 2;
int y2 = ((inv_mat[1][0] * x >> 9) + y_offset2) / 2;
if (x2 < 0 || x2 >= pos.w ||
y2 < 0 || y2 >= pos.h) continue;
ONSBuf *src_buffer = (ONSBuf *)image_surface->pixels + total_width * y2 + x2 + pos.w*current_cell;
#ifdef BPP16
unsigned char *alphap = alpha_buf + image_surface->w * y2 + x2 + pos.w*current_cell;
#else
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
unsigned char *alphap = (unsigned char *)src_buffer + 3;
#else
unsigned char *alphap = (unsigned char *)src_buffer;
#endif
#endif
if (blending_mode == BLEND_NORMAL) {
if ((trans_mode == TRANS_COPY) && (alpha == 256)) {
SET_PIXEL(*src_buffer, 0xff);
} else {
BLEND_PIXEL();
}
} else if (blending_mode == BLEND_ADD) {
ADDBLEND_PIXEL();
} else if (blending_mode == BLEND_SUB) {
SUBBLEND_PIXEL();
}
}
}
// unlock surface
SDL_UnlockSurface( image_surface );
SDL_UnlockSurface( dst_surface );
}
// used to draw characters on text_surface
// Alpha = 1 - (1-Da)(1-Sa)
// Color = (DaSaSc + Da(1-Sa)Dc + Sa(1-Da)Sc)/A
void AnimationInfo::blendText( SDL_Surface *surface, int dst_x, int dst_y,
SDL_Color &color, SDL_Rect *clip,
bool rotate_flag )
{
if (image_surface == NULL || surface == NULL) return;
SDL_Rect dst_rect = {dst_x, dst_y, surface->w, surface->h};
if (rotate_flag){
dst_rect.w = surface->h;
dst_rect.h = surface->w;
}
SDL_Rect src_rect = {0, 0, 0, 0};
SDL_Rect clipped_rect;
/* ---------------------------------------- */
/* 1st clipping */
if ( clip ){
if ( doClipping( &dst_rect, clip, &clipped_rect ) ) return;
src_rect.x += clipped_rect.x;
src_rect.y += clipped_rect.y;
}
/* ---------------------------------------- */
/* 2nd clipping */
SDL_Rect clip_rect = {0, 0, image_surface->w, image_surface->h};
if ( doClipping( &dst_rect, &clip_rect, &clipped_rect ) ) return;
src_rect.x += clipped_rect.x;
src_rect.y += clipped_rect.y;
/* ---------------------------------------- */
SDL_LockSurface( surface );
SDL_LockSurface( image_surface );
#ifdef BPP16
int total_width = image_surface->pitch / 2;
Uint32 src_color = ((color.r >> RLOSS) << RSHIFT) |
((color.g >> GLOSS) << GSHIFT) |
(color.b >> BLOSS);
src_color = (src_color | src_color << 16) & BLENDMASK;
#else
int total_width = image_surface->pitch / 4;
Uint32 src_color1 = color.r << RSHIFT | color.b;
Uint32 src_color2 = color.g << GSHIFT;
Uint32 src_color3 = src_color1 | src_color2 | AMASK;
#endif
ONSBuf *dst_buffer = (ONSBuf *)image_surface->pixels +
total_width * dst_rect.y +
image_surface->w*current_cell/num_of_cells +
dst_rect.x;
#ifdef BPP16
unsigned char *alphap = alpha_buf + image_surface->w * dst_rect.y +
image_surface->w*current_cell/num_of_cells +
dst_rect.x;
#endif
if (!rotate_flag){
unsigned char *src_buffer = (unsigned char*)surface->pixels +
surface->pitch*src_rect.y + src_rect.x;
for ( int i=dst_rect.h ; i!=0 ; i-- ){
for ( int j=dst_rect.w ; j!=0 ; j--, dst_buffer++, src_buffer++ ){
BLEND_TEXT_ALPHA();
}
dst_buffer += total_width - dst_rect.w;
#ifdef BPP16
alphap += image_surface->w - dst_rect.w;
#endif
src_buffer += surface->pitch - dst_rect.w;
}
}
else{
for ( int i=0 ; i<dst_rect.h ; i++ ){
unsigned char *src_buffer = (unsigned char*)surface->pixels +
surface->pitch*(surface->h - src_rect.x - 1) +
src_rect.y + i;
for ( int j=dst_rect.w ; j!=0 ; j--, dst_buffer++ ){
BLEND_TEXT_ALPHA();
src_buffer -= surface->pitch;
}
dst_buffer += total_width - dst_rect.w;
#ifdef BPP16
alphap += image_surface->w - dst_rect.w;
#endif
}
}
SDL_UnlockSurface( image_surface );
SDL_UnlockSurface( surface );
}
void AnimationInfo::calcAffineMatrix()
{
// calculate forward matrix
// |mat[0][0] mat[0][1]|
// |mat[1][0] mat[1][1]|
int cos_i = 1024, sin_i = 0;
if (rot != 0){
cos_i = (int)(1024.0 * cos(-M_PI*rot/180));
sin_i = (int)(1024.0 * sin(-M_PI*rot/180));
}
mat[0][0] = cos_i*scale_x/100;
mat[0][1] = -sin_i*scale_y/100;
mat[1][0] = sin_i*scale_x/100;
mat[1][1] = cos_i*scale_y/100;
// calculate bounding box
int min_xy[2] = { 0, 0 }, max_xy[2] = { 0, 0 };
for (int i=0 ; i<4 ; i++){
//Mion: need to make sure corners are in the right order
//(UL,LL,LR,UR of the original image)
int c_x = (i<2)?(-pos.w/2):(pos.w/2);
int c_y = ((i+1)&2)?(pos.h/2):(-pos.h/2);
if (scale_x < 0) c_x = -c_x;
if (scale_y < 0) c_y = -c_y;
corner_xy[i][0] = (mat[0][0] * c_x + mat[0][1] * c_y) / 1024 + pos.x;
corner_xy[i][1] = (mat[1][0] * c_x + mat[1][1] * c_y) / 1024 + pos.y;
if (i==0 || min_xy[0] > corner_xy[i][0]) min_xy[0] = corner_xy[i][0];
if (i==0 || max_xy[0] < corner_xy[i][0]) max_xy[0] = corner_xy[i][0];
if (i==0 || min_xy[1] > corner_xy[i][1]) min_xy[1] = corner_xy[i][1];
if (i==0 || max_xy[1] < corner_xy[i][1]) max_xy[1] = corner_xy[i][1];
}
bounding_rect.x = min_xy[0];
bounding_rect.y = min_xy[1];
bounding_rect.w = max_xy[0]-min_xy[0]+1;
bounding_rect.h = max_xy[1]-min_xy[1]+1;
// calculate inverse matrix
int denom = scale_x*scale_y;
if (denom == 0) return;
inv_mat[0][0] = mat[1][1] * 10000 / denom;
inv_mat[0][1] = -mat[0][1] * 10000 / denom;
inv_mat[1][0] = -mat[1][0] * 10000 / denom;
inv_mat[1][1] = mat[0][0] * 10000 / denom;
}
SDL_Surface *AnimationInfo::allocSurface( int w, int h )
{
return SDL_CreateRGBSurface(SDL_SWSURFACE, w, h, BPP, RMASK, GMASK, BMASK, AMASK);
}
void AnimationInfo::allocImage( int w, int h )
{
if (!image_surface ||
image_surface->w != w ||
image_surface->h != h){
deleteImage();
image_surface = allocSurface( w, h );
#ifdef BPP16
if (image_surface)
alpha_buf = new unsigned char[w*h];
#endif
}
abs_flag = true;
pos.w = w / num_of_cells;
pos.h = h;
}
void AnimationInfo::copySurface( SDL_Surface *surface, SDL_Rect *src_rect, SDL_Rect *dst_rect )
{
if (!image_surface || !surface) return;
SDL_Rect _dst_rect = {0, 0, image_surface->w, image_surface->h};
if (dst_rect) _dst_rect = *dst_rect;
SDL_Rect _src_rect = {0, 0, surface->w, surface->h};
if (src_rect) _src_rect = *src_rect;
if (_src_rect.x >= surface->w) return;
if (_src_rect.y >= surface->h) return;
if (_src_rect.x+_src_rect.w >= surface->w)
_src_rect.w = surface->w - _src_rect.x;
if (_src_rect.y+_src_rect.h >= surface->h)
_src_rect.h = surface->h - _src_rect.y;
if (_dst_rect.x+_src_rect.w > image_surface->w)
_src_rect.w = image_surface->w - _dst_rect.x;
if (_dst_rect.y+_src_rect.h > image_surface->h)
_src_rect.h = image_surface->h - _dst_rect.y;
SDL_LockSurface( surface );
SDL_LockSurface( image_surface );
int i;
for (i=0 ; i<_src_rect.h ; i++)
memcpy( (ONSBuf*)((unsigned char*)image_surface->pixels + image_surface->pitch * (_dst_rect.y+i)) + _dst_rect.x,
(ONSBuf*)((unsigned char*)surface->pixels + surface->pitch * (_src_rect.y+i)) + _src_rect.x,
_src_rect.w*sizeof(ONSBuf) );
#if defined(BPP16)
for (i=0 ; i<_src_rect.h ; i++)
memset( alpha_buf + image_surface->w * (_dst_rect.y+i) + _dst_rect.x, 0xff, _src_rect.w );
#endif
SDL_UnlockSurface( image_surface );
SDL_UnlockSurface( surface );
}
void AnimationInfo::fill( Uint8 r, Uint8 g, Uint8 b, Uint8 a )
{
if (!image_surface) return;
SDL_LockSurface( image_surface );
ONSBuf *dst_buffer = (ONSBuf *)image_surface->pixels;
#ifdef BPP16
Uint32 rgb = ((r>>RLOSS) << RSHIFT) | ((g>>GLOSS) << GSHIFT) | (b>>BLOSS);
unsigned char *alphap = alpha_buf;
int dst_margin = image_surface->w % 2;
#else
Uint32 rgb = (r << RSHIFT) | (g << GSHIFT) | b;
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
unsigned char *alphap = (unsigned char *)dst_buffer + 3;
#else
unsigned char *alphap = (unsigned char *)dst_buffer;
#endif
int dst_margin = 0;
#endif
for (int i=image_surface->h ; i!=0 ; i--){
for (int j=image_surface->w ; j!=0 ; j--, dst_buffer++)
SET_PIXEL(rgb, a);
dst_buffer += dst_margin;
}
SDL_UnlockSurface( image_surface );
}
SDL_Surface *AnimationInfo::setupImageAlpha( SDL_Surface *surface,
SDL_Surface *surface_m,
bool has_alpha )
{
if (surface == NULL) return NULL;
SDL_LockSurface( surface );
Uint32 *buffer = (Uint32 *)surface->pixels;
SDL_PixelFormat *fmt = surface->format;
int w = surface->w;
int h = surface->h;
int w2 = w / num_of_cells;
orig_pos.w = w;
orig_pos.h = h;
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
unsigned char *alphap = (unsigned char *)buffer + 3;
#else
unsigned char *alphap = (unsigned char *)buffer;
#endif
Uint32 ref_color=0;
if ( trans_mode == TRANS_TOPLEFT ){
ref_color = *buffer;
}
else if ( trans_mode == TRANS_TOPRIGHT ){
ref_color = *(buffer + surface->w - 1);
}
else if ( trans_mode == TRANS_DIRECT ) {
ref_color = direct_color[0] << fmt->Rshift |
direct_color[1] << fmt->Gshift |
direct_color[2] << fmt->Bshift;
}
ref_color &= RGBMASK;
int i, j, c;
if ( trans_mode == TRANS_ALPHA && !has_alpha ){
const int w22 = w2/2;
const int w3 = w22 * num_of_cells;
orig_pos.w = w3;
SDL_PixelFormat *fmt = surface->format;
SDL_Surface *surface2 = SDL_CreateRGBSurface( SDL_SWSURFACE, w3, h,
fmt->BitsPerPixel, fmt->Rmask, fmt->Gmask, fmt->Bmask, fmt->Amask );
SDL_LockSurface( surface2 );
Uint32 *buffer2 = (Uint32 *)surface2->pixels;
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
alphap = (unsigned char *)buffer2 + 3;
#else
alphap = (unsigned char *)buffer2;
#endif
for (i=h ; i!=0 ; i--){
for (c=num_of_cells ; c!=0 ; c--){
for (j=w22 ; j!=0 ; j--, buffer++, alphap+=4){
*buffer2++ = *buffer;
*alphap = (*(buffer + w22) & 0xff) ^ 0xff;
}
buffer += (w2 - w22);
}
buffer += surface->w - w2 *num_of_cells;
buffer2 += surface2->w - w22*num_of_cells;
alphap += (surface2->w - w22*num_of_cells)*4;
}
SDL_UnlockSurface( surface );
SDL_FreeSurface( surface );
surface = surface2;
}
else if ( trans_mode == TRANS_MASK ){
if (surface_m){
//apply mask (replacing existing alpha values, if any)
SDL_LockSurface( surface_m );
const int mw = surface_m->w;
const int mwh = surface_m->w * surface_m->h;
const int cw = mw / num_of_cells;
int i2 = 0;
for (i=h ; i!=0 ; i--){
Uint32 *buffer_m = (Uint32 *)surface_m->pixels + i2;
for (c=num_of_cells ; c!=0 ; c--){
int j2 = 0;
for (j=w2 ; j!=0 ; j--, buffer++, alphap+=4){
*alphap = (*(buffer_m + j2) & 0xff) ^ 0xff;
if (j2 >= mw) j2 = 0;
else j2++;
}
}
buffer += mw - (cw * num_of_cells);
i2 += mw;
if (i2 >= mwh) i2 = 0;
}
SDL_UnlockSurface( surface_m );
}
}
else if ( trans_mode == TRANS_TOPLEFT ||
trans_mode == TRANS_TOPRIGHT ||
trans_mode == TRANS_DIRECT ){
const int trans_value = RGBMASK & MEDGRAY;
for (i=h ; i!=0 ; i--){
for (j=w ; j!=0 ; j--, buffer++, alphap+=4){
if ( (*buffer & RGBMASK) == ref_color )
*buffer = trans_value;