bool PaletteEntryPanel::generateColormaps()
{
if (!entry || !entry->getParent() || ! palettes[0])
return false;
MemChunk mc;
SImage img;
MemChunk imc;
mc.reSize(34*256);
mc.seek(0, SEEK_SET);
imc.reSize(34*256*4);
imc.seek(0, SEEK_SET);
uint8_t rgba[4];
rgba[3] = 255;
rgba_t rgb;
float grey;
// Generate 34 maps: the first 32 for diminishing light levels,
// the 33th for the inverted grey map used by invulnerability.
// The 34th colormap remains empty and black.
for (size_t l = 0; l < 34; ++l)
{
for (size_t c = 0; c < 256; ++c)
{
rgb = palettes[0]->colour(c);
if (l < 32)
{
// Generate light maps
DIMINISH(rgb.r, l);
DIMINISH(rgb.g, l);
DIMINISH(rgb.b, l);
#if (0)
}
else if (l == GREENMAP)
{
// Point of mostly useless trivia: the green "light amp" colormap in the Press Release beta
// have colors that, on average, correspond to a bit less than (R*75/256, G*225/256, B*115/256)
#endif
}
else if (l == GRAYMAP)
{
// Generate inverse map
grey = ((float)rgb.r/256.0 * col_greyscale_r) + ((float)rgb.g/256.0 * col_greyscale_g) + ((float)rgb.b/256.0 * col_greyscale_b);
grey = 1.0 - grey;
// Clamp value: with Id Software's values, the sum is greater than 1.0 (0.299+0.587+0.144=1.030)
// This means the negation above can give a negative value (for example, with RGB values of 247 or more),
// which will not be converted correctly to unsigned 8-bit int in the rgba_t struct.
if (grey < 0.0) grey = 0;
rgb.r = rgb.g = rgb.b = grey*255;
}
else
{
// Fill with 0
rgb = palettes[0]->colour(0);
}
rgba[0] = rgb.r; rgba[1] = rgb.g; rgba[2] = rgb.b;
imc.write(&rgba, 4);
mc[(256*l)+c] = palettes[0]->nearestColour(rgb);
}
}
#if 0
// Create truecolor image
uint8_t* imd = new uint8_t[256*34*4];
memcpy(imd, imc.getData(), 256*34*4);
img.setImageData(imd, 256, 34, RGBA);
// imd will be freed by img's destructor
ArchiveEntry* tcolormap;
string name = entry->getName(true) + "-tcm.png";
tcolormap = new ArchiveEntry(name);
if (tcolormap)
{
entry->getParent()->addEntry(tcolormap);
SIFormat::getFormat("png")->saveImage(img, tcolormap->getMCData());
EntryType::detectEntryType(tcolormap);
}
#endif
// Now override or create new entry
ArchiveEntry* colormap;
colormap = entry->getParent()->getEntry("COLORMAP", true);
bool preexisting = colormap != NULL;
if (!colormap)
{
// We need to create this entry
colormap = new ArchiveEntry("COLORMAP.lmp", 34*256);
}
if (!colormap)
return false;
colormap->importMemChunk(mc);
if (!preexisting)
{
entry->getParent()->addEntry(colormap);
}
return true;
}
/* MapPreviewCanvas::createImage
* Draws the map in an image
* TODO: Factorize code with normal draw() and showMap() functions.
* TODO: Find a way to generate an arbitrary-sized image through
* tiled rendering.
*******************************************************************/
void MapPreviewCanvas::createImage(ArchiveEntry& ae, int width, int height)
{
// Find extents of map
mep_vertex_t m_min(999999.0, 999999.0);
mep_vertex_t m_max(-999999.0, -999999.0);
for (unsigned a = 0; a < verts.size(); a++)
{
if (verts[a].x < m_min.x)
m_min.x = verts[a].x;
if (verts[a].x > m_max.x)
m_max.x = verts[a].x;
if (verts[a].y < m_min.y)
m_min.y = verts[a].y;
if (verts[a].y > m_max.y)
m_max.y = verts[a].y;
}
double mapwidth = m_max.x - m_min.x;
double mapheight = m_max.y - m_min.y;
if (width == 0) width = -5;
if (height == 0) height = -5;
if (width < 0)
width = mapwidth / abs(width);
if (height < 0)
height = mapheight / abs(height);
// Setup colours
rgba_t col_save_background = ColourConfiguration::getColour("map_image_background");
rgba_t col_save_line_1s = ColourConfiguration::getColour("map_image_line_1s");
rgba_t col_save_line_2s = ColourConfiguration::getColour("map_image_line_2s");
rgba_t col_save_line_special = ColourConfiguration::getColour("map_image_line_special");
rgba_t col_save_line_macro = ColourConfiguration::getColour("map_image_line_macro");
// Setup OpenGL rigmarole
GLuint texID, fboID;
if (GLEW_ARB_framebuffer_object)
{
glGenTextures(1, &texID);
glBindTexture(GL_TEXTURE_2D, texID);
// We don't use mipmaps, but OpenGL will refuse to attach
// the texture to the framebuffer if they are not present
glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
glBindTexture(GL_TEXTURE_2D, 0);
glGenFramebuffersEXT(1, &fboID);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fboID);
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, texID, 0);
GLenum status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
}
glViewport(0, 0, width, height);
// Setup the screen projection
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0, width, 0, height, -1, 1);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
// Clear
glClearColor(((double)col_save_background.r)/255.f, ((double)col_save_background.g)/255.f,
((double)col_save_background.b)/255.f, ((double)col_save_background.a)/255.f);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
// Translate to inside of pixel (otherwise inaccuracies can occur on certain gl implementations)
if (OpenGL::accuracyTweak())
glTranslatef(0.375f, 0.375f, 0);
// Zoom/offset to show full map
// Offset to center of map
offset_x = m_min.x + (mapwidth * 0.5);
offset_y = m_min.y + (mapheight * 0.5);
// Zoom to fit whole map
double x_scale = ((double)width) / mapwidth;
double y_scale = ((double)height) / mapheight;
zoom = MIN(x_scale, y_scale);
zoom *= 0.95;
// Translate to middle of canvas
glTranslated(width>>1, height>>1, 0);
// Zoom
glScaled(zoom, zoom, 1);
// Translate to offset
glTranslated(-offset_x, -offset_y, 0);
// Setup drawing
glDisable(GL_TEXTURE_2D);
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
glLineWidth(map_image_thickness);
glEnable(GL_LINE_SMOOTH);
// Draw lines
for (unsigned a = 0; a < lines.size(); a++)
{
mep_line_t line = lines[a];
// Check ends
if (line.v1 >= verts.size() || line.v2 >= verts.size())
continue;
// Get vertices
mep_vertex_t v1 = verts[lines[a].v1];
mep_vertex_t v2 = verts[lines[a].v2];
// Set colour
if (line.special)
OpenGL::setColour(col_save_line_special);
else if (line.macro)
OpenGL::setColour(col_save_line_macro);
else if (line.twosided)
OpenGL::setColour(col_save_line_2s);
else
OpenGL::setColour(col_save_line_1s);
// Draw line
glBegin(GL_LINES);
glVertex2d(v1.x, v1.y);
glVertex2d(v2.x, v2.y);
glEnd();
}
glLineWidth(1.0f);
glDisable(GL_LINE_SMOOTH);
uint8_t* ImageBuffer = new uint8_t[width * height * 4];
glReadPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, ImageBuffer);
if (GLEW_ARB_framebuffer_object)
{
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glDeleteTextures( 1, &texID );
glDeleteFramebuffersEXT( 1, &fboID );
}
SImage img;
img.setImageData(ImageBuffer, width, height, RGBA);
img.mirror(true);
MemChunk mc;
SIFormat::getFormat("png")->saveImage(img, mc);
ae.importMemChunk(mc);
}