// React to keyboard input
void keyboard(unsigned char key, int x, int y)
{
printf("key %d pressed at %d,%d\n",key,x,y);
fflush(stdout);
switch (key)
{
// Add a light based on the camera position.
case 'L':
MyLightPositions.push_back(getCameraPosition());
break;
// Update a light based on the camera position.
case 'l':
MyLightPositions[MyLightPositions.size() - 1] = getCameraPosition();
break;
// Pressing r will launch the raytracing.
case 'r':
{
cout << "Raytracing" << endl;
// Setup an image with the size of the current image.
Image result(ImageSize_X, ImageSize_Y);
// Produce the rays for each pixel, by first computing
// the rays for the corners of the frustum.
Vec3Df origin00, dest00;
Vec3Df origin01, dest01;
Vec3Df origin10, dest10;
Vec3Df origin11, dest11;
Vec3Df origin, dest;
produceRay(0, 0, &origin00, &dest00);
produceRay(0, ImageSize_Y - 1, &origin01, &dest01);
produceRay(ImageSize_X - 1, 0, &origin10, &dest10);
produceRay(ImageSize_X - 1, ImageSize_Y - 1, &origin11, &dest11);
for (unsigned int y = 0; y < ImageSize_Y; ++y) {
for (unsigned int x = 0; x < ImageSize_X; ++x)
{
// Produce the rays for each pixel, by interpolating
// the four rays of the frustum corners.
float xscale = 1.0f - float(x) / (ImageSize_X - 1);
float yscale = 1.0f - float(y) / (ImageSize_Y - 1);
origin = yscale*(xscale*origin00 + (1 - xscale)*origin10) +
(1 - yscale)*(xscale*origin01 + (1 - xscale)*origin11);
dest = yscale*(xscale*dest00 + (1 - xscale)*dest10) +
(1 - yscale)*(xscale*dest01 + (1 - xscale)*dest11);
// Launch raytracing for the given ray.
Vec3Df rgb = performRayTracing(origin, dest);
// Store the result in an image
result.setPixel(x, y, RGBValue(rgb[0], rgb[1], rgb[2]));
}
loadbar(y, ImageSize_Y, 50);
}
loadbar(ImageSize_Y, ImageSize_Y, 50);
cout << endl;
cout << endl;
result.writeImage("result.ppm");
cout << endl;
break;
}
// Pressing s will launch the raytracing with sampling.
case 's':
{
cout << "Raytracing with sampling" << endl;
// Setup an image with the size of the current image.
Image result(ImageSize_X, ImageSize_Y);
// Produce the rays for each pixel, by first computing
// the rays for the corners of the frustum.
Vec3Df origin00, dest00;
Vec3Df origin01, dest01;
Vec3Df origin10, dest10;
Vec3Df origin11, dest11;
Vec3Df origin, dest;
produceRay(0, 0, &origin00, &dest00);
produceRay(0, ImageSize_Y - 1, &origin01, &dest01);
produceRay(ImageSize_X - 1, 0, &origin10, &dest10);
produceRay(ImageSize_X - 1, ImageSize_Y - 1, &origin11, &dest11);
Vec3Df rgb;
unsigned int fromY = 0;
unsigned int toY = 100;
for (unsigned int y = fromY; y < toY; ++y) {
for (unsigned int x = 0; x < ImageSize_X; ++x)
{
// Produce the rays for each pixel, by interpolating
// the four rays of the frustum corners.
float xscale; // = 1.0f - float(x) / (ImageSize_X - 1);
float yscale; // = 1.0f - float(y) / (ImageSize_Y - 1);
for (unsigned int sx = 0; sx < ns; sx++) {
for (unsigned int sy = 0; sy < ns; sy++) {
xscale = 1.0f - (x + (sx + 0.5f) / ns) / (ImageSize_X - 1);
yscale = 1.0f - (y + (sy + 0.5f) / ns) / (ImageSize_Y - 1);
origin = yscale*(xscale*origin00 + (1 - xscale)*origin10) + (1 - yscale)*(xscale*origin01 + (1 - xscale)*origin11);
dest = yscale*(xscale*dest00 + (1 - xscale)*dest10) + (1 - yscale)*(xscale*dest01 + (1 - xscale)*dest11);
// Launch raytracing for the given ray.
rgb += performRayTracing(origin, dest);
}
}
rgb /= float(ns*ns);
// Store the result in an image
result.setPixel(x, y, RGBValue(rgb[0], rgb[1], rgb[2]));
}
loadbar(y-fromY, toY-fromY, 50);
}
loadbar(toY - fromY, toY - fromY, 50);
cout << endl;
cout << endl;
result.writeImage("result.ppm");
cout << endl;
break;
}
// ESC pressed
case 27:
{
exit(0);
}
// Space pressed, trace our debug line.
case 32:
{
cout << "Raytracing single ray" << endl;
// Produce the ray for the current mouse position
Vec3Df testRayOrigin, testRayDestination;
produceRay(x, y, &testRayOrigin, &testRayDestination);
yourKeyboardFunc(key, x, y, testRayOrigin, testRayDestination);
}
}
}
// prise en compte du clavier
void keyboard(unsigned char key, int x, int y) {
printf("key %d pressed at %d,%d\n",key,x,y);
fflush(stdout);
switch (key) {
case 'L':
MyLightPositions.push_back(getCameraPosition());
break;
case 'l':
MyLightPositions[MyLightPositions.size()-1]=getCameraPosition();
break;
case 'r': {
//C'est nouveau!!!
//commencez ici et lancez vos propres fonctions par rayon.
cout << config.toString() << endl;
cout << "Starting raytracing ..." << endl;
int pixelsTotal, pixelsRendered;
float fraction, previousFraction;
bool timing = true;
clock_t t1, t2;
if (timing) {
t1 = clock();
}
bool progressBar = true;
int barLength = 100;
if (progressBar) {
pixelsTotal = config.renderSize_X * config.renderSize_Y;
cout << " 0%";
for (unsigned int i = 0; i < barLength; ++i) cout << " ";
cout << "100%" << endl;
cout << " |";
for (unsigned int i = 0; i < barLength; ++i) cout << " ";
cout << "|" << endl;
}
Image result(config.renderSize_X,config.renderSize_Y);
Vec3Df origin00, dest00;
Vec3Df origin01, dest01;
Vec3Df origin10, dest10;
Vec3Df origin11, dest11;
Vec3Df origin, dest;
produceRay(0,0, &origin00, &dest00);
produceRay(0,config.viewportSize_Y-1, &origin01, &dest01);
produceRay(config.viewportSize_X-1,0, &origin10, &dest10);
produceRay(config.viewportSize_X-1,config.viewportSize_Y-1, &origin11, &dest11);
if (progressBar) {
previousFraction = 0;
cout << " ";
}
for (unsigned int y=0; y<config.renderSize_X;++y)
for (unsigned int x=0; x<config.renderSize_Y;++x)
{
//svp, decidez vous memes quels parametres vous allez passer à la fonction
//e.g., maillage, triangles, sphères etc.
float xscale=1.0f-float(x)/(config.renderSize_X-1);
float yscale=1.0f-float(y)/(config.renderSize_Y-1);
origin=yscale*(xscale*origin00+(1-xscale)*origin10)+
(1-yscale)*(xscale*origin01+(1-xscale)*origin11);
dest=yscale*(xscale*dest00+(1-xscale)*dest10)+
(1-yscale)*(xscale*dest01+(1-xscale)*dest11);
Vec3Df rgb = performRayTracing(origin, dest);
result.setPixel(x,y, RGBValue(rgb[0], rgb[1], rgb[2]));
// Update progress bar in console output
if (progressBar) {
pixelsRendered = (y * config.renderSize_X) + x;
if (pixelsRendered > 0)
fraction = static_cast<float>(pixelsRendered) / static_cast<float>(pixelsTotal);
else
fraction = 0;
float fDelta = fraction - previousFraction;
if (fDelta > 1.0f/barLength) {
cout << "#";
cout.flush();
// Fraction plus residual
previousFraction = fraction + (1.0f/barLength - fDelta);
}
}
}
if (progressBar)
cout << "#" << endl;
if (timing) {
t2 = clock();
float diffSeconds = ((static_cast<float>(t2) - static_cast<float>(t1)) / 1000000.0F);
cout << endl;
std::cout << " Render time: " << diffSeconds << " seconds" << std::endl;
cout << endl;
}
result.writeImage("result.ppm");
break;
}
case 27: // touche ESC
exit(0);
}
yourKeyboardFunc(key,x,y);
}
