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GP_GeneralPaintModule.cpp
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#include "GP_GeneralPaintModule.hpp"
#include "GP_VCycle.hpp"
#include <Graphics/Graphics.hpp>
#include <Graphics/Font.hpp>
#include <Graphics/GLExtensions.hpp>
#include <Graphics/GLSLShader.hpp>
#include <Vector/VectorGL.hpp>
#include <iostream>
#include <sstream>
#include <vector>
REQUIRE_GL_EXTENSION(GL_ARB_multitexture);
#undef ERROR
#define ERROR( X ) std::cerr << X << std::endl
#define WARNING( X ) std::cout << X << std::endl
#define INFO( X ) std::cout << X << std::endl
using std::vector;
using std::cerr;
using std::cout;
using std::endl;
using std::swap;
using std::ostringstream;
using std::istringstream;
#include "gp_load_ppm.hpp"
namespace {
Module *create_module(const std::string ¶ms_in) {
string params = params_in;
char mode = 'p';
char blend = 'a';
if (params.size() == 2 || (params.size() > 2 && params[2] == ' ')) {
mode = params[0];
blend = params[1];
if (params.size() == 2) params = "";
else params.erase(0,3);
}
Vector3f grey = make_vector(0.0f, 0.0f, 0.0f);
{
vector< float > r,g,b;
unsigned int width, height;
if (load_ppm_channels(params, width, height, r, g, b)) {
for (unsigned int i = 0; i < r.size(); ++i) {
grey.x += r[i];
}
if (!r.empty()) {
grey.x /= r.size();
}
for (unsigned int i = 0; i < g.size(); ++i) {
grey.y += g[i];
}
if (!g.empty()) {
grey.y /= g.size();
}
for (unsigned int i = 0; i < b.size(); ++i) {
grey.z += b[i];
}
if (!b.empty()) {
grey.z /= b.size();
}
grey -= make_vector(0.5f, 0.5f, 0.5f);
}
}
GeneralPaintModule *m = new GeneralPaintModule(params, new VCycle(grey));
if (mode == 'c') {
m->mode = GeneralPaintModule::CLONE_MODE;
} else if (mode == 'e') {
m->mode = GeneralPaintModule::EDGE_MODE;
} else {
m->mode = GeneralPaintModule::PAINT_MODE;
}
string target_name = "";
if (blend == 'o') {
target_name = "over";
} else if (blend == 'd') {
target_name = "dir";
} else if (blend == 'm') {
target_name = "min";
} else if (blend == 'M') {
target_name = "max";
} else if (blend == 'a') {
target_name = "add";
}
for (unsigned int b = 0; b < m->blend_modes.size(); ++b) {
if (m->blend_modes[b].name == target_name) {
m->current_blend_mode = b;
break;
}
}
return m;
}
class Fred {
public:
Fred() {
register_module("generalpaint", create_module, "[[pce][odmMa]] filespec");
}
} fred;
}
REQUIRE_GL_EXTENSION( GL_EXT_framebuffer_object )
REQUIRE_GL_EXTENSION( GL_ARB_texture_rectangle )
REQUIRE_GL_EXTENSION( GL_ARB_texture_float )
REQUEST_GL_EXTENSION( GL_ARB_color_buffer_float )
REQUIRE_GL_EXTENSION( GL_ARB_shader_objects )
//REQUIRE_GL_EXTENSION( GL_ARB_multitexture )
#include "gp_gl_helpers.hpp"
#include "gp_hsv_helpers.hpp"
BlendMode::BlendMode(string const &_name, string const &filename) : name(_name) {
{
Graphics::ShaderObjectRef frag = Graphics::get_shader_object("#define DO_X\n"
#ifdef ATI_HACK
"#define ATI_HACK\n"
#endif
, filename, GL_FRAGMENT_SHADER_ARB);
assert(frag.ref);
gx_shader = Graphics::get_program_object(frag);
assert(gx_shader.ref);
glUseProgramObjectARB(gx_shader->handle);
glUniform1iARB(glGetUniformLocationARB(gx_shader->handle, "base_gx_tex"), 0);
glUniform1iARB(glGetUniformLocationARB(gx_shader->handle, "base_gy_tex"), 1);
glUniform1iARB(glGetUniformLocationARB(gx_shader->handle, "brush_gx_tex"), 2);
glUniform1iARB(glGetUniformLocationARB(gx_shader->handle, "brush_gy_tex"), 3);
glUseProgramObjectARB(0);
}
{
Graphics::ShaderObjectRef frag = Graphics::get_shader_object("#define DO_Y\n"
#ifdef ATI_HACK
"#define ATI_HACK\n"
#endif
, filename, GL_FRAGMENT_SHADER_ARB);
assert(frag.ref);
gy_shader = Graphics::get_program_object(frag);
assert(gy_shader.ref);
glUseProgramObjectARB(gy_shader->handle);
glUniform1iARB(glGetUniformLocationARB(gy_shader->handle, "base_gx_tex"), 0);
glUniform1iARB(glGetUniformLocationARB(gy_shader->handle, "base_gy_tex"), 1);
glUniform1iARB(glGetUniformLocationARB(gy_shader->handle, "brush_gx_tex"), 2);
glUniform1iARB(glGetUniformLocationARB(gy_shader->handle, "brush_gy_tex"), 3);
glUseProgramObjectARB(0);
}
}
GeneralPaintModule::GeneralPaintModule(string const &filename, Integrator *_integrator) : integrator(_integrator) {
drew_recently = true;
brush_fade = 0.0f;
text_fade = 0.0f;
grad_dirty = true;
painting = false;
edge_selecting = false;
edge_detail = false;
brush_size = 4;
single_stepping = false;
step = false;
dump_frame = false;
help_on = false;
mode = PAINT_MODE;
current_stroke = NULL;
show_stroke_line = false;
dragging_stroke = false;
paint_color = make_vector(0.1f, 0.1f, 0.1f);
paint_stroke.Step = 1.0f;
paint_stroke.smoothing_kernel.clear();
{ //a tad smoother.
float sum = 0.0f;
for (int x = -4; x <= 4; ++x) {
float v = x / float(2.0f);
paint_stroke.smoothing_kernel.push_back(expf(-v*v));
sum += paint_stroke.smoothing_kernel.back();
}
INFO("Kernel sum is " << sum);
for (unsigned int i = 0; i < paint_stroke.smoothing_kernel.size(); ++i) {
paint_stroke.smoothing_kernel[i] /= sum;
}
}
paint_color_selecting = false;
example_edge_stroke.smoothing_kernel = paint_stroke.smoothing_kernel;
clone_point = make_vector(0.0f, 0.0f);
center_color_acc = make_vector(0.0f, 0.0f, 0.0f);
min_color_acc = make_vector(0.0f, 0.0f, 0.0f);
max_color_acc = make_vector(0.0f, 0.0f, 0.0f);
color_adapt = false;
super_scale = false;
compare = false;
edge_sample_tex = edge_sample_fb = 0;
edge_perp_tex = edge_perp_fb = 0;
edge_tan_tex = edge_tan_fb = 0;
edge_rad = 16;
edge_steps = 0;
//--------------------------------------------------
//Load an image, possibly:
vector< float > r,g,b;
loaded_filename = filename;
bool have_image = load_ppm_channels(filename, ImageWidth, ImageHeight, r, g, b);
if (!have_image) {
loaded_filename = "blank";
istringstream dim(filename);
char c;
if (dim >> ImageWidth >> c >> ImageHeight && c == 'x') {
INFO("Interpreting filename as image dimensions.");
if (ImageWidth * ImageHeight > 100000000) {
INFO("Image too big, I'm not going to allocate that for you.");
ImageWidth = ImageHeight = 1025;
}
} else {
ImageWidth = ImageHeight = 257;
}
}
vector< Vector3f > f(ImageWidth * ImageHeight, make_vector< float, 3 >(0));
vector< Vector3f > gx((ImageWidth-1) * ImageHeight, make_vector< float, 3 >(0));
vector< Vector3f > gy(ImageWidth * (ImageHeight-1), make_vector< float, 3 >(0));
if (have_image) {
for (unsigned int y = 0; y < ImageHeight; ++y) {
for (unsigned int x = 0; x < ImageWidth; ++x) {
float R = r[y * ImageWidth + x];
float G = g[y * ImageWidth + x];
float B = b[y * ImageWidth + x];
/*float Y_ = Kr * R + (1 - Kr - Kb) * G + Kb * B;
f[y * ImageWidth + x].x = Y_;
f[y * ImageWidth + x].y = 0.5f * (B - Y_) / (1 - Kb);
f[y * ImageWidth + x].z = 0.5f * (R - Y_) / (1 - Kr);*/
f[y * ImageWidth + x].x = R;
f[y * ImageWidth + x].y = G;
f[y * ImageWidth + x].z = B;
}
}
for (unsigned int y = 0; y < ImageHeight; ++y) {
for (unsigned int x = 0; x < ImageWidth; ++x) {
if (x + 1 < ImageWidth) {
gx[y*(ImageWidth-1)+x] = f[y * ImageWidth + x+1] - f[y * ImageWidth + x];
}
if (y + 1 < ImageHeight) {
gy[y*ImageWidth+x] = f[(y+1) * ImageWidth + x] - f[y * ImageWidth + x];
}
}
}
}
f_orig = f;
//-------------------------------------------------
//Set up textures:
alloc_tex(ImageWidth-1, ImageHeight, gx_tex, gx);
alloc_fb(gx_tex, gx_fb);
alloc_tex(ImageWidth, ImageHeight-1, gy_tex, gy);
alloc_fb(gy_tex, gy_fb);
alloc_tex(ImageWidth, ImageHeight, f_tex, f);
alloc_fb(f_tex, f_fb);
alloc_tex(ImageWidth, ImageHeight, f_orig_tex, f);
//alloc_tex(ImageWidth-1, ImageHeight, gx_residual_tex);
//alloc_fb(gx_residual_tex, gx_residual_fb);
//alloc_tex(ImageWidth, ImageHeight-1, gy_residual_tex);
//alloc_fb(gy_residual_tex, gy_residual_fb);
alloc_tex(ImageWidth-1, ImageHeight, gx_src_tex);
alloc_tex(ImageWidth, ImageHeight-1, gy_src_tex);
viewable_textures.push_back(ViewableTexture(gx_tex, gx_fb, ImageWidth-1, ImageHeight, "gx"));
viewable_textures.push_back(ViewableTexture(gy_tex, gy_fb, ImageWidth, ImageHeight-1, "gy"));
viewable_textures.push_back(ViewableTexture(f_tex, f_fb, ImageWidth, ImageHeight, "f"));
current_viewing_texture = viewable_textures.size() - 1;
//--------------------------------------------------
//set up proper (lack of) color clamping:
if (have_ARB_color_buffer_float()) {
glClampColorARB(GL_CLAMP_VERTEX_COLOR_ARB, GL_FALSE);
glClampColorARB(GL_CLAMP_FRAGMENT_COLOR_ARB, GL_FALSE);
glClampColorARB(GL_CLAMP_READ_COLOR_ARB, GL_FALSE);
Graphics::gl_errors("Color clampping");
} else {
WARNING("Unable to set colors unclamped [no ARB_color_buffer_float] -- you may have problems.");
}
mouse_pos = make_vector(0.0f, 0.0f);
//--------------------------------------------------
{ //interpolate:
#ifdef ATI_HACK
Graphics::ShaderObjectRef frag = Graphics::get_shader_object("gp_shaders/vc_interpolate_ATI_HACK.glsl", GL_FRAGMENT_SHADER_ARB);
#else
Graphics::ShaderObjectRef frag = Graphics::get_shader_object("gp_shaders/vc_interpolate.glsl", GL_FRAGMENT_SHADER_ARB);
#endif
assert(frag.ref);
interpolate_shader = Graphics::get_program_object(frag);
assert(interpolate_shader.ref);
glUseProgramObjectARB(interpolate_shader->handle);
glUniform1iARB(glGetUniformLocationARB(interpolate_shader->handle, "small"), 0);
glUseProgramObjectARB(0);
}
{
Graphics::ShaderObjectRef frag = Graphics::get_shader_object("gp_shaders/gp_scale_bias.glsl", GL_FRAGMENT_SHADER_ARB);
assert(frag.ref);
scale_bias_shader = Graphics::get_program_object(frag);
assert(scale_bias_shader.ref);
glUseProgramObjectARB(scale_bias_shader->handle);
glUniform1iARB(glGetUniformLocationARB(scale_bias_shader->handle, "image"), 0);
glUseProgramObjectARB(0);
}
{
Graphics::ShaderObjectRef frag = Graphics::get_shader_object("gp_shaders/gp_scale_bias_subpixel.glsl", GL_FRAGMENT_SHADER_ARB);
assert(frag.ref);
scale_bias_subpixel_shader = Graphics::get_program_object(frag);
assert(scale_bias_subpixel_shader.ref);
glUseProgramObjectARB(scale_bias_subpixel_shader->handle);
glUniform1iARB(glGetUniformLocationARB(scale_bias_subpixel_shader->handle, "image"), 0);
glUseProgramObjectARB(0);
}
{
Graphics::ShaderObjectRef frag = Graphics::get_shader_object("gp_shaders/gp_compare.glsl", GL_FRAGMENT_SHADER_ARB);
assert(frag.ref);
compare_shader = Graphics::get_program_object(frag);
assert(compare_shader.ref);
glUseProgramObjectARB(compare_shader->handle);
glUniform1iARB(glGetUniformLocationARB(compare_shader->handle, "img"), 0);
glUniform1iARB(glGetUniformLocationARB(compare_shader->handle, "orig"), 1);
glUseProgramObjectARB(0);
}
{
Graphics::ShaderObjectRef frag = Graphics::get_shader_object("gp_shaders/gp_edge_gradient.glsl", GL_FRAGMENT_SHADER_ARB);
assert(frag.ref);
edge_gradient_shader = Graphics::get_program_object(frag);
assert(edge_gradient_shader.ref);
glUseProgramObjectARB(edge_gradient_shader->handle);
glUniform1iARB(glGetUniformLocationARB(edge_gradient_shader->handle, "edge"), 0);
glUseProgramObjectARB(0);
}
{
Graphics::ShaderObjectRef frag = Graphics::get_shader_object("gp_shaders/gp_sum.glsl", GL_FRAGMENT_SHADER_ARB);
assert(frag.ref);
sum_shader = Graphics::get_program_object(frag);
assert(sum_shader.ref);
glUseProgramObjectARB(sum_shader->handle);
glUniform1iARB(glGetUniformLocationARB(sum_shader->handle, "tex"), 0);
glUniform1iARB(glGetUniformLocationARB(sum_shader->handle, "base"), 1);
glUseProgramObjectARB(0);
}
blend_modes.push_back(BlendMode("add", "gp_shaders/gp_blend_add.glsl"));
blend_modes.push_back(BlendMode("dir", "gp_shaders/gp_blend_directional_add.glsl"));
blend_modes.push_back(BlendMode("max", "gp_shaders/gp_blend_max.glsl"));
blend_modes.push_back(BlendMode("min", "gp_shaders/gp_blend_min.glsl"));
blend_modes.push_back(BlendMode("over", "gp_shaders/gp_blend_over.glsl"));
current_blend_mode = 0;
//--------------------------------------------------
//set up depth renderbuffers for drawing.
glGenRenderbuffersEXT(1, &gx_depth_rb);
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, gx_depth_rb);
glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT, ImageWidth - 1, ImageHeight);
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
//Note: glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, gx_depth_rb);
glGenRenderbuffersEXT(1, &gy_depth_rb);
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, gy_depth_rb);
glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT, ImageWidth, ImageHeight - 1);
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
//--------------------------------------------------
if (integrator) {
integrator->init(this);
integrator->gradient_changed(this);
}
//-------------------------------------------------
//Set up ports:
out_ports.push_back(&gx_port);
out_ports.push_back(&gy_port);
gx_port.name = "gx";
gy_port.name = "gy";
gx_port.position = make_vector(1.0f, 0.1f);
gy_port.position = make_vector(1.0f, -0.1f);
gx_port().width = ImageWidth - 1;
gx_port().height = ImageHeight;
gx_port().tex = gx_tex;
gx_port().fb = gx_fb;
gy_port().width = ImageWidth;
gy_port().height = ImageHeight - 1;
gy_port().tex = gy_tex;
gy_port().fb = gy_fb;
out_ports.push_back(&edge_sample_port);
out_ports.push_back(&edge_tan_port);
out_ports.push_back(&edge_perp_port);
edge_sample_port.name = "edge-sample";
edge_tan_port.name = "edge-tan";
edge_perp_port.name = "edge-perp";
edge_sample_port.position = make_vector(-0.1f, -1.0f);
edge_tan_port.position = make_vector(0.0f, -1.0f);
edge_perp_port.position = make_vector(0.1f, -1.0f);
edge_tan_port().width = 0;
edge_tan_port().height = 0;
edge_tan_port().tex = edge_tan_tex;
edge_tan_port().fb = edge_tan_fb;
edge_perp_port().width = 0;
edge_perp_port().height = 0;
edge_perp_port().tex = edge_perp_tex;
edge_perp_port().fb = edge_perp_fb;
Graphics::gl_errors("init");
}
GeneralPaintModule::~GeneralPaintModule() {
}
Vector2f GeneralPaintModule::size() {
return make_vector(2.0f, 2.0f / ImageWidth * ImageHeight);
}
void GeneralPaintModule::update(float elapsed_time) {
//set up proper (lack of) color clamping:
if (have_ARB_color_buffer_float()) {
glClampColorARB(GL_CLAMP_VERTEX_COLOR_ARB, GL_FALSE);
glClampColorARB(GL_CLAMP_FRAGMENT_COLOR_ARB, GL_FALSE);
glClampColorARB(GL_CLAMP_READ_COLOR_ARB, GL_FALSE);
Graphics::gl_errors("Color clampping");
}
if (text_fade > 0.0f) {
text_fade -= elapsed_time;
if (text_fade < 0.0f) text_fade = 0.0f;
}
if (brush_fade > 0.0f) {
brush_fade -= elapsed_time;
if (brush_fade < 0.0f) brush_fade = 0.0f;
}
if (!drew_recently) return;
if (!drew_recently) return;
drew_recently = false;
glDisable(GL_BLEND);
/*
static Uint32 last_tick = SDL_GetTicks();
Uint32 cur_tick = SDL_GetTicks();
const float decay = 0.5f;
static float elapsed_avg = 0.0f;
elapsed_avg = (elapsed_avg * decay) + (cur_tick - last_tick) / 1000.0f;
last_tick = cur_tick;
float norm = elapsed_avg / (1.0f / (1.0f - decay));
static float unreported_time = 0.0f;
unreported_time += elapsed_time;
if (unreported_time > 1.0f) {
unreported_time = 0.0f;
INFO("Running " << ImageWidth << "x" << ImageHeight << " = " << (ImageWidth * ImageHeight) / 1000000.0f << " megapixel(s) at " << 1.0f / norm << " fps.");
}*/
if (mode == PAINT_MODE && (paint_stroke.new_points || paint_stroke.dirty)) {
render_paint_stroke();
}
if (mode == EDGE_MODE && (edge_stroke.new_points || edge_stroke.dirty)) {
render_edge_stroke();
}
if (mode == CLONE_MODE && (clone_stroke.new_points || clone_stroke.dirty)) {
render_clone_stroke();
}
gx_port().new_flag = false;
gy_port().new_flag = false;
if (grad_dirty) {
if (integrator) {
integrator->gradient_changed(this);
}
gx_port().new_flag = true;
gy_port().new_flag = true;
grad_dirty = false;
}
if (integrator) {
if (!single_stepping || step) {
integrator->update( this );
step = false;
}
}
//-----------------------------------------
//Sample color under cursor:
if (color_adapt) {
ViewableTexture const &viewing = viewable_textures.at(current_viewing_texture);
unsigned int show_scale = 1;
while ((show_scale + 1) * viewing.width <= ImageWidth && (show_scale + 1) * viewing.height <= ImageHeight) ++show_scale;
float show_x_offset = 0.0f; //0.5f * ((int)(ImageWidth * draw_scale) - (int)(viewing.width * show_scale));
float show_y_offset = 0.0f; //0.5f * ((int)(ImageHeight * draw_scale) - (int)(viewing.height * show_scale));
int sample_x = (int)( (mouse_pos.x - show_x_offset) / (int)show_scale + 0.5f);
int sample_y = (int)( viewing.height - (mouse_pos.y - show_y_offset) / (int)show_scale + 0.5f);
if (sample_x < 0) sample_x = 0;
if (sample_x >= (int)viewing.width) sample_x = viewing.width - 1;
if (sample_y < 0) sample_y = 0;
if (sample_y >= (int)viewing.height) sample_y = viewing.height - 1;
bind_fb(viewing.fb, viewing.width, viewing.height);
Vector3f sample_col;
glReadPixels(sample_x, sample_y, 1, 1, GL_RGB, GL_FLOAT, &sample_col);
unbind_fb();
//INFO("Center color: " << sample_col);
center_color_acc = center_color_acc * ColorRate + sample_col;
}
//keep texture ports up to date:
gx_port().tex = gx_tex;
gx_port().fb = gx_fb;
gy_port().tex = gy_tex;
gy_port().fb = gy_fb;
glEnable(GL_BLEND);
Graphics::gl_errors("update");
}
namespace {
string onoff(bool val) {
if (val) return "on";
else return "off";
}
};
bool GeneralPaintModule::handle_event(SDL_Event const &event, Vector2f local_mouse) {
drew_recently = true;
//so we can handle drawing:
if ((event.type == SDL_MOUSEBUTTONDOWN || event.type == SDL_MOUSEBUTTONUP) && event.button.button == SDL_BUTTON_MIDDLE) {
return false;
}
help.clear();
help.push_back("F1 -- toggle this help text");
if (event.type == SDL_KEYDOWN && event.key.keysym.sym == SDLK_F1) {
help_on = !help_on;
return true;
}
/*
help.push_back("ESC -- quit");
if (event.type == SDL_KEYDOWN && event.key.keysym.sym == SDLK_ESCAPE) {
quit_screen(this);
return;
}
*/
help.push_back("t -- toggle current stroke line visibility (currently " + onoff(show_stroke_line) + ")");
if (event.type == SDL_KEYDOWN && event.key.keysym.sym == SDLK_t) {
show_stroke_line = !show_stroke_line;
return true;
}
if (current_stroke) {
help.push_back("g -- start dragging current stroke");
if (event.type == SDL_KEYDOWN && event.key.keysym.sym == SDLK_g) {
dragging_stroke = true;
drag_start = mouse_pos;
drag_start_points = current_stroke->points;
return true;
}
}
help.push_back("LEFT/RIGHT -- change blend mode");
if (event.type == SDL_KEYDOWN && event.key.keysym.sym == SDLK_LEFT) {
text_fade = 1.0f;
current_blend_mode = (current_blend_mode + blend_modes.size() - 1) % blend_modes.size();
if (current_stroke) {
current_stroke->dirty = true;
}
return true;
}
if (event.type == SDL_KEYDOWN && event.key.keysym.sym == SDLK_RIGHT) {
text_fade = 1.0f;
current_blend_mode = (current_blend_mode + 1) % blend_modes.size();
if (current_stroke) {
current_stroke->dirty = true;
}
return true;
}
help.push_back("a -- toggle color adapt (currently " + onoff(color_adapt) + ")");
if (event.type == SDL_KEYDOWN && !(event.key.keysym.mod & KMOD_SHIFT) && event.key.keysym.sym == SDLK_a) {
color_adapt = !color_adapt;
return true;
}
help.push_back("DEBUG: shift + a -- toggle 10x color scale (currently " + onoff(super_scale) + ")");
if (event.type == SDL_KEYDOWN && (event.key.keysym.mod & KMOD_SHIFT) && event.key.keysym.sym == SDLK_a) {
super_scale = !super_scale;
return true;
}
help.push_back("backspace -- delete current stroke");
help.push_back("SHIFT+backspace -- delete current image");
if (event.type == SDL_KEYDOWN && event.key.keysym.sym == SDLK_BACKSPACE) {
if (current_stroke) {
current_stroke->clear();
current_stroke->dirty = true;
}
if (event.key.keysym.mod & KMOD_SHIFT) {
INFO("Clearing..."); //eh?
vector< Vector3f > gx((ImageWidth-1) * ImageHeight, make_vector< float, 3 >(0));
vector< Vector3f > gy(ImageWidth * (ImageHeight-1), make_vector< float, 3 >(0));
for (unsigned int y = 0; y < ImageHeight; ++y) {
for (unsigned int x = 0; x < ImageWidth; ++x) {
if (x + 1 < ImageWidth) {
gx[y*(ImageWidth-1)+x] = f_orig[y * ImageWidth + x+1] - f_orig[y * ImageWidth + x];
}
if (y + 1 < ImageHeight) {
gy[y*ImageWidth+x] = f_orig[(y+1) * ImageWidth + x] - f_orig[y * ImageWidth + x];
}
}
}
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, gx_tex);
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGB16F_ARB, ImageWidth-1, ImageHeight, 0, GL_RGB, GL_FLOAT, &(gx[0]));
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, gx_src_tex);
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGB16F_ARB, ImageWidth-1, ImageHeight, 0, GL_RGB, GL_FLOAT, &(gx[0]));
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, gy_tex);
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGB16F_ARB, ImageWidth, ImageHeight-1, 0, GL_RGB, GL_FLOAT, &(gy[0]));
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, gy_src_tex);
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGB16F_ARB, ImageWidth, ImageHeight-1, 0, GL_RGB, GL_FLOAT, &(gy[0]));
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0);
grad_dirty = true;
Graphics::gl_errors("Clearing");
}
return true;
}
help.push_back("d -- toggle extra edge detail");
if (event.type == SDL_KEYDOWN && event.key.keysym.sym == SDLK_d) {
edge_detail = !edge_detail;
}
/*
help.push_back("DEBUG: c -- toggle compare to orig (currently " + onoff(compare) + ")");
if (event.type == SDL_KEYDOWN && event.key.keysym.sym == SDLK_c) {
compare = !compare;
}
help.push_back("DEBUG: s -- turn on/single step (currently " + onoff(single_stepping) + ")");
if (event.type == SDL_KEYDOWN && event.key.keysym.sym == SDLK_s) {
single_stepping = true;
step = true;
}
help.push_back("d -- dump screenshot");
if (event.type == SDL_KEYDOWN && event.key.keysym.sym == SDLK_d && !(event.key.keysym.mod & KMOD_SHIFT)) {
dump_frame = true;
}
help.push_back("SHIFT + d -- dump operator");
if (event.type == SDL_KEYDOWN && event.key.keysym.sym == SDLK_d && (event.key.keysym.mod & KMOD_SHIFT)) {
VCycle *vc = dynamic_cast< VCycle * >(integrator);
if (vc) {
vc->dump_operator(this);
} else {
ERROR("Can't dump this.");
}
}
*/
//select other textures to view:
help.push_back("DEBUG: pgup/pgdn -- select other texture to view");
if (event.type == SDL_KEYDOWN && event.key.keysym.sym == SDLK_PAGEUP) {
current_viewing_texture = (current_viewing_texture + 1) % viewable_textures.size();
text_fade = 1.0f;
return true;
}
if (event.type == SDL_KEYDOWN && event.key.keysym.sym == SDLK_PAGEDOWN) {
current_viewing_texture = (current_viewing_texture + viewable_textures.size() - 1) % viewable_textures.size();
text_fade = 1.0f;
return true;
}
//go to a random image:
help.push_back("DEBUG: r -- randomize current guess");
help.push_back("DEBUG: shift + r -- zero current guess");
if (event.type == SDL_KEYDOWN && event.key.keysym.sym == SDLK_r) {
vector< Vector3f > f_temp(ImageWidth * ImageHeight, make_vector(0.0f, 0.0f, 0.0f));
if (!(event.key.keysym.mod & KMOD_SHIFT)) {
for (unsigned int i = 0; i < f_temp.size(); ++i) {
f_temp[i].x = rand() / float(RAND_MAX);
f_temp[i].y = rand() / float(RAND_MAX); // - 0.5f;
f_temp[i].z = rand() / float(RAND_MAX); // - 0.5f;
}
}
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, f_tex);
glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGB16F_ARB, ImageWidth, ImageHeight, 0, GL_RGB, GL_FLOAT, &(f_temp[0]));
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0);
return true;
}
//mode switch:
help.push_back("up/down -- switch mode");
if (!painting && !edge_selecting && !paint_color_selecting) {
if (event.type == SDL_KEYDOWN && event.key.keysym.sym == SDLK_UP) {
text_fade = 1.0f;
mode = (mode + 1) % NUM_MODES;
current_stroke = NULL;
return true;
}
if (event.type == SDL_KEYDOWN && event.key.keysym.sym == SDLK_DOWN) {
text_fade = 1.0f;
mode = (mode + NUM_MODES - 1) % NUM_MODES;
current_stroke = NULL;
return true;
}
}
help.push_back("mouse wheel -- brush size");
if (event.type == SDL_MOUSEWHEEL) {
brush_size += event.wheel.y;
if (brush_size < 0.5f) brush_size = 0.5f;
if (current_stroke) {
current_stroke->dirty = true;
}
brush_fade = 1.0f;
return true;
}
//"Configuration action" (different per mode)
if (mode == PAINT_MODE) {
help.push_back("hold right button -- color selector (hue, saturation)");
help.push_back("hold right button + shift -- color selector (value)");
} else if (mode == CLONE_MODE) {
help.push_back("hold right button -- set source point");
} else if (mode == EDGE_MODE) {
help.push_back("hold right button -- draw over example edge");
}
if (event.type == SDL_MOUSEBUTTONDOWN && event.button.button == SDL_BUTTON_RIGHT ) {
Vector2f draw_pos = mouse_pos;
draw_pos.y = ImageHeight - draw_pos.y;
if (dragging_stroke) {
if (current_stroke) {
current_stroke->points = drag_start_points;
current_stroke->dirty = true;
}
dragging_stroke = false;
}
if (mode == PAINT_MODE) {
paint_color_selecting = true;
} else if (mode == CLONE_MODE) {
clone_point = mouse_pos;
} else if (mode == EDGE_MODE) {
if (!painting) {
if (SDL_GetModState() & KMOD_SHIFT) {
example_edge_stroke.submit_point(draw_pos);
grab_current_edge();
} else {
example_edge_stroke.clear();
current_stroke = &example_edge_stroke;
current_stroke->submit_point(draw_pos);
edge_selecting = true;
}
}
}
brush_fade = 1.0f;
}
//Stop edge drawing:
if (event.type == SDL_MOUSEBUTTONUP && event.button.button == SDL_BUTTON_RIGHT) {
if (mode == PAINT_MODE) {
paint_color_selecting = false;
} else if (mode == EDGE_MODE) {
if (edge_selecting) {
edge_selecting = false;
grab_current_edge();
}
}
brush_fade = 1.0f;
}
//Stop Painting:
if (event.type == SDL_MOUSEBUTTONUP && event.button.button == SDL_BUTTON_LEFT) {
painting = false;
brush_fade = 1.0f;
}
if (current_stroke) {
help.push_back("shift + click left button -- line to cursor");
}
if (mode == PAINT_MODE) {
help.push_back("hold left button -- paint");
} else if (mode == CLONE_MODE) {
help.push_back("hold left button -- clone");
} else if (mode == EDGE_MODE) {
help.push_back("hold left button -- draw edge copy");
}
//Start Painting:
if (event.type == SDL_MOUSEBUTTONDOWN && event.button.button == SDL_BUTTON_LEFT) {
Vector2f draw_pos = mouse_pos;
draw_pos.y = ImageHeight - draw_pos.y;
if (edge_selecting) {
//do nothing.
} else if (dragging_stroke) {
//just put it down.
dragging_stroke = false;
} else if ((SDL_GetModState() & KMOD_SHIFT) && current_stroke != NULL) {
//SHIFT -> draw line.
current_stroke->submit_point(draw_pos);
} else {
//start new stroke:
painting = true;
//make a 'src' copy:
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, gx_fb);
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, gx_src_tex);
glCopyTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGB16F_ARB, 0, 0, ImageWidth-1, ImageHeight, 0);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, gy_fb);
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, gy_src_tex);
glCopyTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGB16F_ARB, 0, 0, ImageWidth, ImageHeight-1, 0);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0);
if (mode == PAINT_MODE) {
paint_stroke.clear();
current_stroke = &paint_stroke;
current_stroke->submit_point(draw_pos);
} else if (mode == CLONE_MODE) {
clone_stroke.clear();
current_stroke = &clone_stroke;
current_stroke->submit_point(draw_pos);
} else if (mode == EDGE_MODE) {
edge_stroke.clear();
current_stroke = &edge_stroke;
current_stroke->submit_point(draw_pos);
}
}
brush_fade = 1.0f;
}
//Actually paint:
if (event.type == SDL_MOUSEMOTION) {
//track motion 'direction':
Vector2f old_pos = mouse_pos;
mouse_pos.x = (local_mouse.x / size().x + 0.5f) * ImageWidth;
mouse_pos.y = (local_mouse.y / size().y + 0.5f) * ImageHeight;
if (dragging_stroke) {
if (current_stroke) {
Vector2f move = mouse_pos - drag_start;
move.y *= -1.0;
current_stroke->points = drag_start_points;
for (unsigned int i = 0; i < current_stroke->points.size(); ++i) {
current_stroke->points[i] += move;
}
current_stroke->dirty = true;
} else {
WARNING("WARNING: lost current stroke while dragging!");
dragging_stroke = false;
}
} else if (paint_color_selecting) {
Vector3f hsv = rgb_to_hsv(paint_color);
bool do_value = (SDL_GetModState() & KMOD_SHIFT) != 0;
Vector2f pos;
if (do_value) {
pos.x = (hsv.v - 0.5f) * 2.0f * ColorSelRad;
pos.y = 0.0f;
} else {
pos.x = cosf(hsv.h * 2.0f * float(M_PI)) * hsv.s * ColorSelRad;
pos.y = sinf(hsv.h * 2.0f * float(M_PI)) * hsv.s * ColorSelRad;
}
pos += mouse_pos - old_pos;
if (do_value) {
hsv.v = pos.x / (2.0f * ColorSelRad) + 0.5f;
if (hsv.v < 0.0f) hsv.v = 0.0f;
if (hsv.v > 1.0f) hsv.v = 1.0f;
} else {
hsv.h = atan2(pos.y, pos.x) / (2 * M_PI);
if (hsv.h < 0.0f) hsv.h += 1.0f;
hsv.s = length(pos) / ColorSelRad;
if (hsv.s < 0.0f) hsv.s = 0.0f;
if (hsv.s > 1.0f) hsv.s = 1.0f;
}
paint_color = hsv_to_rgb(hsv);
if (current_stroke) {
current_stroke->dirty = true;
}
} else if (painting) {
Vector2f draw_pos = mouse_pos;
Vector2f draw_old_pos = old_pos;
draw_pos.y = ImageHeight - draw_pos.y;
draw_old_pos.y = ImageHeight - draw_old_pos.y;
if (mode == PAINT_MODE) {
assert(current_stroke == &(paint_stroke));
current_stroke->submit_point(draw_pos);
//grad_line(draw_old_pos, draw_pos, brush_size, draw_dir, make_vector(1.0f, 1.0f, 1.0f, 0.5f), false);
} else if (mode == CLONE_MODE) {
current_stroke->submit_point(draw_pos);
assert(current_stroke == &(clone_stroke));
//grad_line(draw_old_pos, draw_pos, brush_size, make_vector(1.0f,1.0f), make_vector(1.0f, 1.0f, 1.0f, 1.0f), true);
} else if (mode == EDGE_MODE) {
assert(current_stroke == &(edge_stroke));
current_stroke->submit_point(draw_pos);
}
}
if (edge_selecting) {
Vector2f draw_pos = mouse_pos;
draw_pos.y = ImageHeight - draw_pos.y;
example_edge_stroke.submit_point(draw_pos);
if (edge_detail && example_edge_stroke.points.size() > 3) {
grab_current_edge();
}
}
brush_fade = 1.0f;
}
if (event.type == SDL_MOUSEBUTTONDOWN || event.type == SDL_MOUSEBUTTONUP || event.type == SDL_MOUSEMOTION) {
brush_fade = 1.0f;
return true;
}
return false;
}
namespace {
void dump_texture(GLuint tex, unsigned int w, unsigned int h, float scale, float bias, string base_filename) {
vector< Vector3f > texture(w*h);
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, tex);
glGetTexImage(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGB, GL_FLOAT, &(texture[0]));
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, 0);
ofstream dump((base_filename + ".ppm").c_str(), std::ios::out | std::ios::binary);
dump << "P6\n" << w << " " << h << " 255\n";
for (unsigned int row = 0; row < h; ++row) {
float *at = &(texture[row*w].x);
float *end = at + w * 3;
while (at != end) {
int val = (int)((scale * (*at) + bias)*256);
if (val < 0) val = 0;
if (val > 255) val = 255;
unsigned char v = val;
dump.write((char *)&(v),1);
++at;
}
}
ofstream raw((base_filename + ".raw").c_str(), std::ios::out | std::ios::binary);
raw << "RW\n" << w << " " << h << "\n";
raw.write((char *)&(texture[0]), sizeof(float)*3*w*h);
}
} //end namespace
float GeneralPaintModule::cursor_alpha() {
return 0.0f;
}
void GeneralPaintModule::draw(Box2f viewport, Box2f screen_viewport, float, unsigned int recurse) {
drew_recently = true;
assert(viewable_textures.at(2).name == "f");
viewable_textures.at(2).tex = f_tex;
viewable_textures.at(2).fb = f_fb;
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glBoxToBox(viewport, screen_viewport);
glMatrixMode(GL_MODELVIEW);
//background:
glBegin(GL_QUADS);
glColor3f(0.0f, 0.0f, 0.0f);
glVertex2f(-size().x*0.5f, -size().y*0.5f);
glVertex2f( size().x*0.5f, -size().y*0.5f);
glVertex2f( size().x*0.5f, size().y*0.5f);
glVertex2f(-size().x*0.5f, size().y*0.5f);
glEnd();
glDisable(GL_BLEND);