void Viewer::init()
{
glewInit();
//shader_vert="toon.vert"; shader_frag = "toon.frag";
//shader_vert="vertexshader.txt"; shader_frag = "fragmentshader.txt";
//InitializeProgram();
//initShader_ter();
restoreStateFromFile();
glEnable (GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_LIGHTING);
glEnable(GL_NORMALIZE);
glCullFace(GL_BACK);
glEnable(GL_CULL_FACE);
glEnable(GL_TEXTURE_2D);
glShadeModel(GL_SMOOTH);
glEnable(GL_COLOR_MATERIAL);
glPixelStorei(GL_UNPACK_ALIGNMENT, 4); // 4-byte pixel alignment
// pretty rendering
// fast rendering
glEnable(GL_LINE_SMOOTH);
glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
glHint(GL_POINT_SMOOTH_HINT, GL_NICEST);
glHint(GL_POLYGON_SMOOTH_HINT, GL_NICEST);
light.setLight();
mat.setMaterial();
mySky.Set( 0,0,0, 300000.0f );
mySky.LoadTextures(":sky");
emit updateTasklabel(QString::number(curTerr+1)+"/"+QString::number(terrains.size()));
initShader_phong();
QVector4D ltmp(light.position[0],light.position[1],light.position[2],light.position[3]);
ltmp.normalize();
GLfloat lpos[4] = {ltmp.x(),ltmp.y(),ltmp.z(),ltmp.w()};
glProgramEnvParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, 1, lpos);
//QVector<QString> tlist;
//tlist.push_back("CD.ter");
//tlist.push_back("terr_gcut.ter");
// /addTerrain("CD.ter");
//addTerrain("terr_gcut.ter");
help();
//DrawInit();
//qWarning("start drawing");
}
vector<int> searchRange(vector<int>& nums, int target) {
vector<int> res{-1, -1};
if (nums.empty() || nums[0] > target || nums[nums.size()-1] < target) return res;
int l = 0, r = nums.size() - 1, mid = 0;
int start = -1, end = -1;
while (l < r)
{
mid = (l + r) / 2 + 1;
if (nums[mid] == target)
{
vector<int> ltmp(nums.begin() + l, nums.begin() + mid);
vector<int> rtmp(nums.begin()+mid+1, nums.begin()+r+1);
auto lvec = searchRange(ltmp, target), rvec = searchRange(rtmp, target);
if (lvec != res) start = lvec[0] + l;
else start = mid;
if (rvec != res) end = rvec[1] + mid + 1;
else end = mid;
break;
}
else if (nums[mid] < target) l = mid + 1;
else r = mid - 1;
}
if (start == -1 && end == -1 && nums[l] == target && l == r) start = end = l;
res[0] = start;
res[1] = end;
return res;
}
void Viewer::draw()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glClearColor(backgroundCol.x(), backgroundCol.y(), backgroundCol.z(), 1.0f);
if (mySky.wantSky())
mySky.Render( );
glEnable(GL_LIGHTING);
if (applyGLSL)
{
glEnable(GL_VERTEX_PROGRAM_ARB);
glEnable(GL_FRAGMENT_PROGRAM_ARB);
light.position[3] = 1;
light.setLight();
}
else{
light.position[3] = 0;
light.setLight();
}
QVector4D ltmp(light.position[0],light.position[1],light.position[2],light.position[3]);
ltmp.normalize();
GLfloat lpos[4] = {ltmp.x(),ltmp.y(),ltmp.z(),ltmp.w()};
glProgramEnvParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, 1, lpos);
// Draws a terrain
if (curTerr>=0 && curTerr<terrains.size()){
Terrain * terrain = terrains[curTerr];
if (applyTexture) glBindTexture( GL_TEXTURE_2D, terrain->texid );
else glBindTexture( GL_TEXTURE_2D, 0);
terrain->Draw();
//glLineWidth(10.0);
//glPointSize(10.0);
//glColor3f(1.0f,0.0f,0.0f);
for (int i=0; i<terrain->artifacts.size(); i++){
glColor3f(terrain->severity[i]/2.2f, 0.0f, 0.0f);
drawFlag(terrain->artifacts[i]);
}
}
glDisable(GL_VERTEX_PROGRAM_ARB);
glDisable(GL_FRAGMENT_PROGRAM_ARB);
glDisable(GL_LIGHTING);
//glLineWidth(1.0);
//glPointSize(1.0);
}
