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ShapeRenderer.cpp
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ShapeRenderer.cpp
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//============================================================================
//
// This file is part of the ShapePFCN project.
//
// Copyright (c) 2016-2017 - Evangelos Kalogerakis, Melinos Averkiou, Siddhartha Chaudhuri, Subhransu Maji
//
// ShapePFCN 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.
// ShapePFCN 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 ShapePFCN. If not, see <http://www.gnu.org/licenses/>.
//
//============================================================================
#include "ShapeRenderer.hpp"
ColorRGBA8 indexToColor(uint32 index, bool is_point, bool use_same_index_for_all_channels)
{
ColorRGBA8 color;
if (use_same_index_for_all_channels)
{
color = ColorRGBA8((uint8)((index)& 0xFF),
(uint8)((index)& 0xFF),
(uint8)((index)& 0xFF),
255);
}
else
{
color = ColorRGBA8((uint8)((index)& 0xFF),
(uint8)((index >> 8) & 0xFF),
(uint8)((index >> 16) & 0xFF),
255);
}
if (is_point)
{
if (color.b() & 0x80)
THEA_WARNING << "Too many points -- point IDs will overflow and not be one-to-one!";
color.b() = (color.b() | 0x80);
}
return color;
}
ColorRGBA getPaletteColor(long n)
{
static ColorRGBA PALETTE[] = {
ColorRGBA::fromARGB(0xFFFF0000),
ColorRGBA::fromARGB(0xFF00FF00),
ColorRGBA::fromARGB(0xFF0000FF),
ColorRGBA::fromARGB(0xFF00FFFF),
ColorRGBA::fromARGB(0xFFFF00FF),
ColorRGBA::fromARGB(0xFFFFFF00),
ColorRGBA::fromARGB(0xFF800000),
ColorRGBA::fromARGB(0xFF008000),
ColorRGBA::fromARGB(0xFF000080),
ColorRGBA::fromARGB(0xFF008080),
ColorRGBA::fromARGB(0xFF800080),
ColorRGBA::fromARGB(0xFF808000),
};
return PALETTE[n % (sizeof(PALETTE) / sizeof(ColorRGBA))];
}
bool enableWireframe(DMesh & mesh)
{
mesh.setWireframeEnabled(true);
return false;
}
bool flattenFaces(DMesh & mesh)
{
mesh.isolateFaces();
mesh.computeAveragedVertexNormals();
return false;
}
bool averageNormals(DMesh & mesh)
{
//if (!mesh.hasNormals())
mesh.computeAveragedVertexNormals();
return false;
}
ShapeRenderer::ShapeRenderer(const std::string & _mesh_filepath, const Model & _model)
{
try
{
impl = new ShapeRendererImpl(_mesh_filepath, _model);
}
THEA_STANDARD_CATCH_BLOCKS(throw Error("Could not create ShapeRenderer");, ERROR, "%s", "Could not create shape renderer")
}
ShapeRenderer::~ShapeRenderer()
{
delete impl;
}
int ShapeRenderer::exec(string const & cmdline)
{
return impl->exec(cmdline);
}
int ShapeRenderer::exec(int argc, char ** argv)
{
return impl->exec(argc, argv);
}
AtomicInt32 ShapeRendererImpl::has_render_system(0);
RenderSystem * ShapeRendererImpl::render_system = NULL;
Shader * ShapeRendererImpl::point_shader = NULL;
Shader * ShapeRendererImpl::mesh_shader = NULL;
Shader * ShapeRendererImpl::face_index_shader = NULL;
ShapeRendererImpl::ShapeRendererImpl(const std::string & _mesh_filepath, const Model & _model)
{
model_path = _mesh_filepath;
resetArgs();
if (has_render_system.compareAndSet(0, 1) == 0)
{
if (!loadPlugins())
throw Error("Could not load plugins");
}
model = _model;
}
void ShapeRendererImpl::resetArgs()
{
zoom = 1.0f;
out_width = out_height = -1;
point_size = 4.0f;
has_up = false;
view_up = Vector3(0, 1, 0);
color_mode = COLOR_SINGLE_RGB;
// Gray color for the phong shaded image
primary_color = ColorRGBA(0.82745098f, 0.82745098f, 0.82745098f, 1.f); //0.0f, 0.0f, 0.0f, 1.0f); //(1.0f, 0.9f, 0.8f, 1.0f);
background_color = ColorRGBA(1, 1, 1, 1);
antialiasing_level = 1;
flat = false;
camera_distance = 0;
transform = Matrix4::identity();
}
int ShapeRendererImpl::exec(string const & cmdline) // cmdline should not include program name
{
TheaArray<string> args;
stringSplit(cmdline, " \t\n\f\r", args, true);
TheaArray<char *> argv(args.size());
for (array_size_t i = 0; i < args.size(); ++i)
{
argv[i] = new char[args[i].length() + 1];
strcpy(argv[i], args[i].c_str());
}
int status = exec((int)argv.size(), &argv[0]);
for (array_size_t i = 0; i < argv.size(); ++i)
delete[] argv[i];
return status;
}
//int ShapeRendererImpl::exec(int argc, char ** argv)
//{
// if (!parseArgs(argc, argv))
// return -1;
//
// if ((color_mode & COLOR_BY_FACE_IDS) | (color_mode & COLOR_BY_FACE_POINT_IDS) | (color_mode & COLOR_BY_FACE_LABELS) | (color_mode & COLOR_BY_FACE_LABELS_WITH_PALETTE))
// {
// FaceColorizer id_colorizer(model.tri_ids, model.quad_ids, model.face_labels, color_mode,view.dir);
// model.mesh_group.forEachMeshUntil(&id_colorizer);
// }
// else
// {
// if (flat)
// //model.mesh_group.forEachMeshUntil(flattenFaces);
// model.orig_mesh_group.forEachMeshUntil(flattenFaces);
// else
// {
// //model.mesh_group.forEachMeshUntil(averageNormals);
// model.orig_mesh_group.forEachMeshUntil(averageNormals);
// }
// }
//
// // Set up framebuffer for offscreen drawing
// int buffer_width = antialiasing_level * out_width;
// int buffer_height = antialiasing_level * out_height;
// Texture * color_tex = NULL;
// Texture * depth_tex = NULL;
// Framebuffer * fb = NULL;
// try
// {
// Texture::Options tex_opts = Texture::Options::defaults();
// tex_opts.interpolateMode = Texture::InterpolateMode::NEAREST_NO_MIPMAP;
// if (color_mode & COLOR_SINGLE_GRAY)
// {
// color_tex = render_system->createTexture("Color", buffer_width, buffer_height, 1, Texture::Format::RGB8(),
// Texture::Dimension::DIM_2D, tex_opts);
// }
// else
// {
// color_tex = render_system->createTexture("Color", buffer_width, buffer_height, 1, Texture::Format::RGBA8(),
// Texture::Dimension::DIM_2D, tex_opts);
// }
// if (!color_tex)
// {
// THEA_ERROR << "Could not create color buffer";
// return -1;
// }
//
// depth_tex = render_system->createTexture("Depth", buffer_width, buffer_height, 1, Texture::Format::DEPTH16(),
// Texture::Dimension::DIM_2D, tex_opts);
//
// if (!depth_tex)
// {
// THEA_ERROR << "Could not create depth buffer";
// return -1;
// }
//
// fb = render_system->createFramebuffer("Framebuffer");
// if (!fb)
// {
// THEA_ERROR << "Could not create offscreen framebuffer";
// return -1;
// }
//
// fb->attach(Framebuffer::AttachmentPoint::COLOR_0, color_tex);
// fb->attach(Framebuffer::AttachmentPoint::DEPTH, depth_tex);
// }
// THEA_STANDARD_CATCH_BLOCKS(return -1;, ERROR, "%s", "Could not render shape")
//
// // Do the rendering
// // We used to do a loop over multiple views, no longer needed, we just have one view
// try
// {
// // Initialize the camera
// Camera camera = model.fitCamera(transform, view, zoom, buffer_width, buffer_height, camera_distance, model.mesh_radius);
//
// // Render the mesh to the offscreen framebuffer
// render_system->pushFramebuffer();
// render_system->setFramebuffer(fb);
//
// render_system->pushDepthFlags();
// render_system->pushColorFlags();
// render_system->pushShapeFlags();
// render_system->setMatrixMode(RenderSystem::MatrixMode::MODELVIEW); render_system->pushMatrix();
// render_system->setMatrixMode(RenderSystem::MatrixMode::PROJECTION); render_system->pushMatrix();
//
// render_system->setCamera(camera);
// render_system->setDepthTest(RenderSystem::DepthTest::LESS);
// render_system->setDepthWrite(true);
// render_system->setColorWrite(true, true, true, true);
//
// render_system->setColorClearValue(background_color);
// render_system->clear();
//
// // Draw model
// render_system->setMatrixMode(RenderSystem::MatrixMode::MODELVIEW); render_system->pushMatrix();
// render_system->multMatrix(transform);
// renderModel(primary_color, false);
// render_system->setMatrixMode(RenderSystem::MatrixMode::MODELVIEW); render_system->popMatrix();
//
// if (color_mode & COLOR_BY_FACE_POINT_IDS)
// {
// // just get a dummy color. the only case we render points is when we render them using their index as color, so the overlay_color will not be used
// ColorRGBA overlay_color = getPaletteColor(0);
//
// render_system->setPolygonOffset(true, -1.0f); // make sure overlays appear on top of primary shape
//
// render_system->setMatrixMode(RenderSystem::MatrixMode::MODELVIEW); render_system->pushMatrix();
// render_system->multMatrix(transform);
// renderModel(overlay_color, true);
// render_system->setMatrixMode(RenderSystem::MatrixMode::MODELVIEW); render_system->popMatrix();
// }
//
// render_system->setMatrixMode(RenderSystem::MatrixMode::PROJECTION); render_system->popMatrix();
// render_system->setMatrixMode(RenderSystem::MatrixMode::MODELVIEW); render_system->popMatrix();
// render_system->popShapeFlags();
// render_system->popColorFlags();
// render_system->popDepthFlags();
//
// // Grab the rendered color image and depth image
// image_with_color.clear();
// if (color_mode & COLOR_SINGLE_GRAY)
// {
// image_with_color = Image(Image::Type::RGB_8U, buffer_width, buffer_height);
// }
// else
// {
// image_with_color = Image(Image::Type::RGB_8U, buffer_width, buffer_height);
// }
// color_tex->getImage(image_with_color);
//
// if (antialiasing_level > 1 && !image_with_color.rescale(out_width, out_height, Image::Filter::BICUBIC))
// {
// THEA_ERROR << "Could not rescale color image to output dimensions";
// return -1;
// }
//
// image_with_depth.clear();
// image_with_depth = Image(Image::Type::LUMINANCE_16U, buffer_width, buffer_height);
// depth_tex->getImage(image_with_depth);
//
// if (antialiasing_level > 1 && !image_with_depth.rescale(out_width, out_height, Image::Filter::BICUBIC))
// {
// THEA_ERROR << "Could not rescale depth image to output dimensions";
// return -1;
// }
//
// render_system->popFramebuffer();
//
// delete color_tex;
// delete depth_tex;
// delete fb;
// }
// catch (std::exception & e__)
// {
// THEA_ERROR << "Could not render view 1 of shape";
// return -1;
// }
//
// return 0;
//}
int ShapeRendererImpl::exec(int argc, char ** argv) // SDF/UP change
{
if (!parseArgs(argc, argv))
return -1;
if ((color_mode & COLOR_BY_FACE_IDS) | (color_mode & COLOR_BY_FACE_POINT_IDS) | (color_mode & COLOR_BY_FACE_LABELS) | (color_mode & COLOR_BY_FACE_LABELS_WITH_PALETTE))
{
FaceColorizer id_colorizer(model.tri_ids, model.quad_ids, model.face_labels, color_mode, view.dir);
model.mesh_group.forEachMeshUntil(&id_colorizer);
}
else
{
if (flat)
//model.mesh_group.forEachMeshUntil(flattenFaces);
model.orig_mesh_group.forEachMeshUntil(flattenFaces);
else
{
//model.mesh_group.forEachMeshUntil(averageNormals);
model.orig_mesh_group.forEachMeshUntil(averageNormals);
}
}
try
{
if (!(color_mode & COLOR_BY_AUX))
{
// Set up framebuffer for offscreen drawing
int buffer_width = antialiasing_level * out_width;
int buffer_height = antialiasing_level * out_height;
// Initialize the camera
Camera camera = model.fitCamera(transform, view, zoom, buffer_width, buffer_height, camera_distance, model.mesh_radius);
Texture * color_tex = NULL;
Texture * depth_tex = NULL;
Framebuffer * fb = NULL;
Texture::Options tex_opts = Texture::Options::defaults();
tex_opts.interpolateMode = Texture::InterpolateMode::NEAREST_NO_MIPMAP;
if (color_mode & COLOR_SINGLE_GRAY)
{
color_tex = render_system->createTexture("Color", buffer_width, buffer_height, 1, Texture::Format::RGB8(),
Texture::Dimension::DIM_2D, tex_opts);
}
else
{
color_tex = render_system->createTexture("Color", buffer_width, buffer_height, 1, Texture::Format::RGBA8(),
Texture::Dimension::DIM_2D, tex_opts);
}
if (!color_tex)
{
THEA_ERROR << "Could not create color buffer";
return -1;
}
depth_tex = render_system->createTexture("Depth", buffer_width, buffer_height, 1, Texture::Format::DEPTH16(),
Texture::Dimension::DIM_2D, tex_opts);
if (!depth_tex)
{
THEA_ERROR << "Could not create depth buffer";
return -1;
}
fb = render_system->createFramebuffer("Framebuffer");
if (!fb)
{
THEA_ERROR << "Could not create offscreen framebuffer";
return -1;
}
fb->attach(Framebuffer::AttachmentPoint::COLOR_0, color_tex);
fb->attach(Framebuffer::AttachmentPoint::DEPTH, depth_tex);
// Do the rendering
// We used to do a loop over multiple views, no longer needed, we just have one view
// Render the mesh to the offscreen framebuffer
render_system->pushFramebuffer();
render_system->setFramebuffer(fb);
render_system->pushDepthFlags();
render_system->pushColorFlags();
render_system->pushShapeFlags();
render_system->setMatrixMode(RenderSystem::MatrixMode::MODELVIEW); render_system->pushMatrix();
render_system->setMatrixMode(RenderSystem::MatrixMode::PROJECTION); render_system->pushMatrix();
render_system->setCamera(camera);
render_system->setDepthTest(RenderSystem::DepthTest::LESS);
render_system->setDepthWrite(true);
render_system->setColorWrite(true, true, true, true);
render_system->setColorClearValue(background_color);
render_system->clear();
// Draw model
if (!(color_mode & COLOR_BY_FACE_POINT_IDS))
{
render_system->setMatrixMode(RenderSystem::MatrixMode::MODELVIEW); render_system->pushMatrix();
render_system->multMatrix(transform);
renderModel(primary_color, false);
render_system->setMatrixMode(RenderSystem::MatrixMode::MODELVIEW); render_system->popMatrix();
}
//else
//{
// //// render white mesh
// FaceColorizer id_colorizer(model.tri_ids, model.quad_ids, model.face_labels, COLOR_SINGLE_RGB, view.dir);
// model.mesh_group.forEachMeshUntil(&id_colorizer);
// render_system->setMatrixMode(RenderSystem::MatrixMode::MODELVIEW); render_system->pushMatrix();
// render_system->multMatrix(transform);
// renderModel(primary_color, false);
// render_system->setMatrixMode(RenderSystem::MatrixMode::MODELVIEW); render_system->popMatrix();
// FaceColorizer id_colorizer2(model.tri_ids, model.quad_ids, model.face_labels, color_mode, view.dir);
// model.mesh_group.forEachMeshUntil(&id_colorizer2);
//}
if (color_mode & COLOR_BY_FACE_POINT_IDS)
{
// just get a dummy color. the only case we render points is when we render them using their index as color, so the overlay_color will not be used
ColorRGBA overlay_color = getPaletteColor(0);
render_system->setPolygonOffset(true, -1.0f); // make sure overlays appear on top of primary shape
render_system->setMatrixMode(RenderSystem::MatrixMode::MODELVIEW); render_system->pushMatrix();
render_system->multMatrix(transform);
renderModel(overlay_color, true);
render_system->setMatrixMode(RenderSystem::MatrixMode::MODELVIEW); render_system->popMatrix();
}
render_system->setMatrixMode(RenderSystem::MatrixMode::PROJECTION); render_system->popMatrix();
render_system->setMatrixMode(RenderSystem::MatrixMode::MODELVIEW); render_system->popMatrix();
render_system->popShapeFlags();
render_system->popColorFlags();
render_system->popDepthFlags();
// Grab the rendered color image and depth image
image_with_color.clear();
if (color_mode & COLOR_SINGLE_GRAY)
{
image_with_color = Image(Image::Type::RGB_8U, buffer_width, buffer_height);
}
else
{
image_with_color = Image(Image::Type::RGB_8U, buffer_width, buffer_height);
}
color_tex->getImage(image_with_color);
if (antialiasing_level > 1 && !image_with_color.rescale(out_width, out_height, Image::Filter::BICUBIC))
{
THEA_ERROR << "Could not rescale color image to output dimensions";
return -1;
}
image_with_depth.clear();
image_with_depth = Image(Image::Type::LUMINANCE_16U, buffer_width, buffer_height);
depth_tex->getImage(image_with_depth);
if (antialiasing_level > 1 && !image_with_depth.rescale(out_width, out_height, Image::Filter::BICUBIC))
{
THEA_ERROR << "Could not rescale depth image to output dimensions";
return -1;
}
render_system->popFramebuffer();
delete color_tex;
delete depth_tex;
delete fb;
}
else // SDF/UP change
{
// we were considering SDF, but did not work well for ShapeNet, this is now replaced with x^2 + y^2 + z^2
//////// Set up framebuffer for offscreen drawing
//////int buffer_width = out_width / 4; // SDF computation is expensive / do it in lower res
//////int buffer_height = out_height / 4;
//////// Initialize the camera
//////Camera camera = model.fitCamera(transform, view, zoom, buffer_width, buffer_height, camera_distance, model.mesh_radius);
//////// @Sid add the sdf image computation here
//////// Save the image in image_sdf; and it will get accessed using get_sdf_image(); (check ShapeRenderer.hpp)
//////renderSDFImage(camera, transform, buffer_width, buffer_height, image_with_sdf);
//////if (!image_with_sdf.rescale(out_width, out_height, Image::Filter::BICUBIC))
//////{
////// THEA_ERROR << "Could not rescale SDF image to output dimensions";
////// return -1;
//////}
// Set up framebuffer for offscreen drawing
int buffer_width = out_width;
int buffer_height = out_height;
// Initialize the camera
Camera camera = model.fitCamera(transform, view, zoom, buffer_width, buffer_height, camera_distance, model.mesh_radius);
renderCoordImage(camera, transform, buffer_width, buffer_height, aux_image, !Settings::use_upright_coord, Settings::up_vector);
if (!aux_image.rescale(out_width, out_height, Image::Filter::BICUBIC))
{
THEA_ERROR << "Could not rescale x^2+y^2+z^2 image to output dimensions";
return -1;
}
}
}
THEA_STANDARD_CATCH_BLOCKS(return -1; , ERROR, "%s", "Could not render view of shape")
return 0;
}
// SDF change
void ShapeRendererImpl::renderSDFImage(Camera const & camera, Matrix4 const & transform, int width, int height, Image & image)
{
if (!model.kdtree)
{
THEA_ERROR << "KD-tree for mesh was not created!";
return;
}
Algorithms::MeshFeatures::Local::ShapeDiameter<DMesh> sdf(model.kdtree, model.mesh_radius); // 2 * model.mesh_radius is max theoretically, but this would only hold for a perfect ball - better scale less aggressively
image.clear();
image.resize(Image::Type::LUMINANCE_16U, width, height);
Matrix4 inv_transform = transform.inverse();
static uint16 const PMAX = std::numeric_limits<uint16>::max();
#pragma omp parallel for
for (int r = 0; r < height; ++r)
{
//THEA_CONSOLE << "Rendering SDF row " << r;
uint16 * pixel = (uint16 *)image.getScanLine(r);
for (int c = 0; c < width; ++c)
{
Vector2 loc(2 * (c + 0.5f) / width - 1, 2 * (r + 0.5f) / height - 1);
Ray3 ray = camera.computePickRay(loc);
Vector4 p = inv_transform * Vector4(ray.getOrigin(), 1.0);
Vector4 u = inv_transform * Vector4(ray.getDirection(), 0.0);
ray = Ray3(p.xyz() / p.w(), u.xyz().unit());
KDTree::RayStructureIntersectionT isec = model.kdtree->rayStructureIntersection<Algorithms::RayIntersectionTester>(ray);
if (isec.isValid())
{
alwaysAssertM(isec.hasNormal(), "SDF: Normal at intersection point not found");
Vector3 surface_point = ray.getPoint(isec.getTime());
Vector3 surface_normal = isec.getNormal();
double v0 = sdf.compute(surface_point, surface_normal, true);
if (v0 < 0)
v0 = sdf.compute(surface_point, surface_normal, false);
double v1 = sdf.compute(surface_point, -surface_normal, true);
if (v1 < 0)
v1 = sdf.compute(surface_point, -surface_normal, false);
double vmin = (v1 < 0 || (v0 >= 0 && v0 < v1)) ? v0 : v1;
double f = Math::clamp( vmin, 0, 1 );
*pixel = Math::clamp((uint16)std::floor(f * PMAX + 0.5), (uint16)0, PMAX);
}
else
{
*pixel = PMAX; // 0xFFFF
}
++pixel;
}
}
}
// UP change
void ShapeRendererImpl::renderCoordImage(Camera const & camera, Matrix4 const & transform, int width, int height, Image & image, bool use_radial_distance, const Thea::Vector3& up_vector)
{
if (!model.kdtree)
{
THEA_ERROR << "KD-tree for mesh was not created!";
return;
}
image.clear();
image.resize(Image::Type::LUMINANCE_16U, width, height);
Matrix4 inv_transform = transform.inverse();
static uint16 const PMAX = std::numeric_limits<uint16>::max();
#pragma omp parallel for
for (int r = 0; r < height; ++r)
{
uint16 * pixel = (uint16 *)image.getScanLine(r);
for (int c = 0; c < width; ++c)
{
Vector2 loc(2 * (c + 0.5f) / width - 1, 2 * (r + 0.5f) / height - 1);
Ray3 ray = camera.computePickRay(loc);
Vector4 p = inv_transform * Vector4(ray.getOrigin(), 1.0);
Vector4 u = inv_transform * Vector4(ray.getDirection(), 0.0);
ray = Ray3(p.xyz() / p.w(), u.xyz().unit());
KDTree::RayStructureIntersectionT isec = model.kdtree->rayStructureIntersection<Algorithms::RayIntersectionTester>(ray);
if (isec.isValid())
{
Vector3 surface_point = ray.getPoint(isec.getTime());
double coord = 0.0;
if (use_radial_distance)
{
coord = sqrt(surface_point.x()*surface_point.x() + surface_point.y()*surface_point.y() + surface_point.z()*surface_point.z()) / (model.mesh_radius + 1e-30);
}
else
{
if (abs(up_vector.x()) > .97)
coord = (surface_point.x() - model.min_axis_values[0]) / model.axis_length[0];
else if (abs(up_vector.y()) > .97 )
coord = (surface_point.y() - model.min_axis_values[1]) / model.axis_length[1];
else if (abs(up_vector.z()) > .97 )
coord = (surface_point.z() - model.min_axis_values[2]) / model.axis_length[2];
else
coord = sqrt(surface_point.x()*surface_point.x() + surface_point.y()*surface_point.y() + surface_point.z()*surface_point.z()) / (model.mesh_radius + 1e-30);
}
coord = Math::clamp(coord, 0.0, 1.0);
*pixel = Math::clamp((uint16)std::floor(coord * PMAX + 0.5), (uint16)0, PMAX);
}
else
{
*pixel = PMAX; // 0xFFFF
}
++pixel;
}
}
}
bool ShapeRendererImpl::usage()
{
//string app_path = FilePath::objectName(Application::programPath());
THEA_CONSOLE << "";
THEA_CONSOLE << "Usage: " << " [OPTIONS] <width> <height>";
THEA_CONSOLE << "";
THEA_CONSOLE << "Options:";
THEA_CONSOLE << " -t <transform> (row-major comma-separated 3x4 or 4x4 matrix,";
THEA_CONSOLE << " applied to shape)";
THEA_CONSOLE << " -z <factor> (zoom factor, default 1)";
THEA_CONSOLE << " -v <arg> (comma-separated 3-vector (viewing direction);";
THEA_CONSOLE << " or 6-vector (direction + eye position);";
THEA_CONSOLE << " or 9-vector (direction + eye + up);";
THEA_CONSOLE << " or string of 3 chars, one for each coordinate,";
THEA_CONSOLE << " each one of +, - or 0;)";
THEA_CONSOLE << " -u <up-dir> (x, y or z, optionally preceded by + or -)";
THEA_CONSOLE << " -c <argb> (shape color, or 'id' to color faces by face ID and";
THEA_CONSOLE << " points by point ID)";
THEA_CONSOLE << " -b <argb> (background color)";
THEA_CONSOLE << " -a N (enable NxN antialiasing: 2 is normal, 4 is very";
THEA_CONSOLE << " high quality)";
THEA_CONSOLE << " -f (flat shading)";
THEA_CONSOLE << "";
return false;
}
bool ShapeRendererImpl::parseTransform(string const & s, Matrix4 & m)
{
TheaArray<string> fields;
long nfields = stringSplit(trimWhitespace(s), ",;:[({<>})] \t\n\r\f", fields, true);
if (nfields != 12 && nfields != 16)
{
THEA_ERROR << "Could not read row-major comma-separated matrix from '" << s << '\'';
return false;
}
m = Matrix4::identity();
for (int i = 0; i < nfields; ++i)
{
istringstream field_in(fields[i]);
if (!(field_in >> m(i / 4, i % 4)))
{
THEA_ERROR << "Could not parse matrix entry '" << fields[i] << '\'';
return false;
}
}
return true;
}
bool ShapeRendererImpl::parseViewDiscrete(string const & s, View & view, bool silent)
{
if (s.length() != 3)
{
if (!silent) THEA_ERROR << "Viewing direction string must have exactly 3 characters, one for each coordinate";
return false;
}
if (s == "000")
{
if (!silent) THEA_ERROR << "View direction is zero vector";
return false;
}
view = View();
for (int i = 0; i < 3; ++i)
{
switch (s[i])
{
case '+': view.dir[i] = 1; break;
case '-': view.dir[i] = -1; break;
case '0': view.dir[i] = 0; break;
default:
if (!silent) THEA_ERROR << "Invalid view direction string '" << s << '\'';
return false;
}
}
if (view.dir.squaredLength() <= 1e-10)
{
if (!silent) THEA_ERROR << "View direction is zero vector";
return false;
}
view.dir.unitize();
if (has_up)
view.up = view_up;
else if (s == "0-0")
view.up = -Vector3::unitZ();
else if (s == "0+0")
view.up = Vector3::unitZ();
else
view.up = Vector3::unitY();
return true;
}
bool ShapeRendererImpl::parseViewContinuous(string const & s, View & view, bool silent)
{
double dx, dy, dz;
double ex, ey, ez;
double ux, uy, uz;
double cam_dist;
char trailing[2]; // to make sure there's nothing after the 9th number
int num_params = sscanf(s.c_str(), " %lf , %lf , %lf , %lf , %lf , %lf , %lf , %lf , %lf , %lf %1s",
&dx, &dy, &dz, &cam_dist, &ex, &ey, &ez, &ux, &uy, &uz, trailing);
if (!(num_params == 10 || num_params == 7 || num_params == 4))
{
if (!silent) THEA_ERROR << "Invalid view string '" << s << '\'';
return false;
}
view = View();
view.dir = Vector3(dx, dy, dz);
if (view.dir.squaredLength() <= 1e-10)
{
if (!silent) THEA_ERROR << "View direction is zero vector";
return false;
}
view.dir.unitize();
camera_distance = cam_dist;
if (num_params == 7)
{
view.has_eye = true;
view.eye = Vector3(ex, ey, ez);
}
if (num_params == 10)
{
view.has_eye = true;
view.eye = Vector3(ex, ey, ez);
view.up = Vector3(ux, uy, uz);
if (view.up.squaredLength() <= 1e-10)
{
if (!silent) THEA_ERROR << "View up is zero vector";
return false;
}
view.up.unitize();
}
else if (has_up)
view.up = view_up;
else
{
Real d = view.dir.dot(Vector3::unitY());
if (Math::fuzzyEq(d, (Real)-1))
view.up = -Vector3::unitZ();
else if (Math::fuzzyEq(d, (Real)1))
view.up = Vector3::unitZ();
else
view.up = Vector3::unitY();
}
return true;
}
bool ShapeRendererImpl::parseViewUp(string const & s, Vector3 & up)
{
if (s.length() != 1 && s.length() != 2)
{
THEA_ERROR << "Up direction must be 'x', 'y' or 'z', optionally preceded by + or -";
return false;
}
char c = s[0];
bool neg = false;
if (c == '+' || c == '-')
{
if (s.length() < 2)
{
THEA_ERROR << "Up direction must be 'x', 'y' or 'z', optionally preceded by + or -";
return false;
}
if (c == '-')
neg = true;
c = s[1];
}
if (c == 'x' || c == 'X')
up = Vector3::unitX();
else if (c == 'y' || c == 'Y')
up = Vector3::unitY();
else if (c == 'z' || c == 'Z')
up = Vector3::unitZ();
else
{
THEA_ERROR << "Up direction must be 'x', 'y' or 'z', optionally preceded by + or -";
return false;
}
if (neg)
up = -up;
return true;
}
bool ShapeRendererImpl::parseColor(string const & s, ColorRGBA & c)
{
std::stringstream ss;
ss << std::hex << s;
uint32 argb;
if (!(ss >> argb))
{
THEA_ERROR << "Could not parse color '" << s << '\'';
return false;
}
c = ColorRGBA::fromARGB(argb);
if (trimWhitespace(s).length() <= 6) // alpha channel not specified
c.a() = 1.0;
return true;
}
bool ShapeRendererImpl::parseArgs(int argc, char ** argv)
{
if (argc < 2)
return usage();
resetArgs();
transform = Matrix4::identity();
argv++;
argc--;
int pos = 0;
while (argc > 0)
{
string arg = *argv;
argv++; argc--;
if (arg.length() <= 0)
continue;
if (arg[0] == '-')
{
if (arg.length() != 2)
return usage();
switch (arg[1])
{
case 't':
{
if (argc < 1) { THEA_ERROR << "-t: Transform not specified"; return false; }
if (!parseTransform(*argv, transform)) return false;
argv++; argc--; break;
}
case 'z':
{
if (argc < 1) { THEA_ERROR << "-z: Zoom not specified"; return false; }
if (sscanf(*argv, " %f", &zoom) != 1)
{
THEA_ERROR << "Could not parse zoom '" << *argv << '\'';
return false;
}
if (zoom <= 0)
{
THEA_ERROR << "Invalid zoom " << zoom;
return false;
}
argv++; argc--; break;
}
case 'v':
{
if (argc < 1) { THEA_ERROR << "-v: View parameters not specified"; return false; }
bool status = false;
if (strlen(*argv) == 3)
status = parseViewDiscrete(*argv, view, true);
else
status = parseViewContinuous(*argv, view, true);
if (!status)
{
THEA_ERROR << "Could not parse view direction '" << *argv << '\'';
return false;
}
argv++; argc--; break;
}
case 'u':
{
if (argc < 1) { THEA_ERROR << "-u: Up direction not specified"; return false; }
if (!parseViewUp(*argv, view_up)) return false;
has_up = true;
argv++; argc--; break;
}
case 'c':
{
if (argc < 1) { THEA_ERROR << "-c: Mesh color not specified"; return false; }
if (toLower(trimWhitespace(*argv)) == "id")
color_mode = COLOR_BY_FACE_POINT_IDS;
else if (toLower(trimWhitespace(*argv)) == "fid")
color_mode = COLOR_BY_FACE_IDS;
else if (toLower(trimWhitespace(*argv)) == "lbl")
color_mode = COLOR_BY_FACE_LABELS;
else if (toLower(trimWhitespace(*argv)) == "lblp")
color_mode = COLOR_BY_FACE_LABELS_WITH_PALETTE;
else if (toLower(trimWhitespace(*argv)) == "aux") // SDF/UP change