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glimage.cpp
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glimage.cpp
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/*
This file is part of Presenter,
copyright (c) 2013--2014 Jiří Župka.
Presenter 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 3 of the License, or
(at your option) any later version.
Presenter 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 darktable. If not, see <http://www.gnu.org/licenses/>.
*/
#include "paintCore.h"
#include "QDebug"
#include "tools.h"
#include <cmath>
GLImage::GLImage(CacheImage *img, GLWidget *painter, GLuint *textures, int max_texture_size, int loader_id):
GLAnimatedImage(loader_id)
{
this->img = img;
this->angle = img->angle;
this->no_slide = img->no_slide;
this->textures = textures;
this->max_texture_size = max_texture_size;
this->painter = painter;
this->loaded = true;
//this->mouse_pos_constant = this->painter->hw / this->geom->height / 1.5;
this->init();
}
GLImage::GLImage(const GLImage& image):
GLAnimatedImage(image.image_id)
{
this->img = image.img;
this->textures = image.textures;
this->max_texture_size = image.max_texture_size;
}
GLImage::~GLImage()
{
glDeleteTextures(this->sgeom.vbo_data.size(), this->textures);
delete[] this->textures;
delete geom;
}
void GLImage::init(){
this->create_geometry_squear();
this->create_geometry_cylinder();
this->geom = 0;
this->switch_geometry(GT_SQUEAR);
GLAnimatedImage::init();
}
void GLImage::update_view(){
if (this->geom->type == GT_SQUEAR){
if(this->painter->hw < this->geom->height){
this->img_zoom = 3.0 * this->painter->hw / this->geom->height;
this->mouse_pos_constant = this->geom->height / this->painter->hw;
}else{
this->img_zoom = 3.0;
this->mouse_pos_constant = 1.0;
}
}else if (this->geom->type == GT_CYLINDER){
this->img_zoom = 2.5 * this->painter->hw / this->geom->height;
this->mouse_pos_constant = this->geom->height / (this->painter->hw);
}
}
void GLImage::create_geometry_squear()
{
//qDebug() << (float)this->img->width() << this->img->height();
this->sgeom.type = GT_SQUEAR;
this->sgeom.height = ((float)this->img->height()) / this->img->width();
this->sgeom.width = 1.0;
int texture_block_x = int(ceil(((float)this->img->width()) / this->max_texture_size));
int texture_block_y = int(ceil(((float)this->img->height()) / this->max_texture_size));
int corners = 20;
float st_x = 2 * this->sgeom.width / texture_block_x;
float st_y = 2 * this->sgeom.height / texture_block_y;
int q = 0;
float stb = st_x / corners;
for(int x = 0; x < texture_block_x; ++x){
for(int y = 0; y < texture_block_y; ++y){
float *data = static_cast<float*> (::operator new (sizeof(float) * (corners + 1)*6));
q = 0;
for(int i = 0; i <= (corners)*6;i+=6){
data[i] = -this->sgeom.width + q * stb + x * st_x;
data[i+1] = this->sgeom.height - (y + 1) * st_y;
data[i+2] = -1.0;
data[i+3] = -this->sgeom.width + q * stb + x * st_x;
data[i+4] = this->sgeom.height - y * st_y;
data[i+5] = -1.0;
q++;
}
this->sgeom.vbo_data.append(data);
}
}
st_x = 1.0 / corners;
q = 0;
this->sgeom.tex_data = static_cast<float*> (::operator new (sizeof(float) * (corners + 1)*4));
for(int i = 0; i < (corners+1)*4;i+=4){
this->sgeom.tex_data[i] = q * st_x;
this->sgeom.tex_data[i+1] = 1.0;
this->sgeom.tex_data[i+2] = q * st_x;
this->sgeom.tex_data[i+3] = 0.0;
q++;
}
/*for(int i=0; i < (corners+1)*4; ++i){
qDebug() << this->sgeom.tex_data[i];
}*/
this->sgeom.count = (corners+1) * 2;
this->sgeom.update();
}
void GLImage::create_geometry_cylinder()
{
//qDebug() << (float)this->img->width() << this->img->height();
this->cgeom.type = GT_CYLINDER;
float img_hw = ((float)this->img->height()) / this->img->width();
this->cgeom.width = 1.0;
int texture_block_x = int(ceil(((float)this->img->width()) / this->max_texture_size));
int texture_block_y = int(ceil(((float)this->img->height()) / this->max_texture_size));
int corners = 20;
float start_angle = -this->angle / 2;
float circuid = (this->angle) / texture_block_x;
float height = (img_hw * circuid * texture_block_x) * 0.5;
this->cgeom.height = height;
this->cgeom.width = circuid * texture_block_x;
float c_alfa = circuid / corners;
int q = 0;
float stb = (2.0 * (float)height) / texture_block_y;
for(int x = 0; x < texture_block_x; ++x){
for(int y = 0; y < texture_block_y; ++y){
float *data = static_cast<float*> (::operator new (sizeof(float) * (corners + 1)*6));
q = 0;
for(int i = 0; i <= (corners)*6;i+=6){
data[i] = sin(start_angle + c_alfa * q + x * circuid);
data[i+1] = height - (y + 1) * stb;
data[i+2] = -cos(start_angle + c_alfa * q + x * circuid);
data[i+3] = sin(start_angle + c_alfa * q + x * circuid);
data[i+4] = height - y * stb;
data[i+5] = -cos(start_angle + c_alfa * q + x * circuid);
q++;
}
this->cgeom.vbo_data.append(data);
}
}
float st_x = 1.0 / corners;
q = 0;
this->cgeom.tex_data = static_cast<float*> (::operator new (sizeof(float) * (corners + 1)*4));
for(int i = 0; i < (corners+1)*4;i+=4){
this->cgeom.tex_data[i] = q * st_x;
this->cgeom.tex_data[i+1] = 1.0;
this->cgeom.tex_data[i+2] = q * st_x;
this->cgeom.tex_data[i+3] = 0.0;
q++;
}
/*for(int i=0; i < (corners+1)*4; ++i){
qDebug() << this->cgeom.tex_data[i];
}*/
this->cgeom.count = (corners+1) * 2;
this->cgeom.update();
}
void GLImage::switch_geometry(char cylinder)
{
if(this->geom){
delete geom;
}
if (cylinder == GT_SQUEAR){
this->geom = this->sgeom.clone();
}else if (cylinder == GT_CYLINDER){
this->geom = this->cgeom.clone();
}
this->geom->update();
this->update_view();
}
void GLImage::reset()
{
GLAnimatedImage::reset();
this->update_view();
}