/* On macOS, compile with... clang 700mainAmbient.c 040pixel.o -lglfw -framework OpenGL -framework Cocoa -framework IOKit On Ubuntu, compile with... cc 700mainAmbient.c 040pixel.o -lglfw -lGL -lm -ldl */ #include #include #include #include #include "040pixel.h" #include "240vector.c" #include "280matrix.c" #include "300isometry.c" #include "300camera.c" #include "700ray.c" #include "700body.c" #include "660sphere.c" #include "670half.c" #include "680and.c" #include "140texture.c" #include "700vanilla.c" #define SCREENWIDTH 512 #define SCREENHEIGHT 512 /*** ARTWORK ******************************************************************/ camCamera camera; double cameraTarget[3] = {0.0, 0.0, 0.0}; double cameraRho = 10.0, cameraPhi = M_PI / 3.0, cameraTheta = M_PI / 3.0; texTexture texForSphere, texForHalf; double cAmbient[3] = {0.2, 0.2, 0.2}; /* Four spheres, one half space, and one AND. */ #define BODYNUM 6 bodyBody bodies[BODYNUM]; int initializeArtwork(void) { /* Camera. */ camSetProjectionType(&camera, camPERSPECTIVE); camSetFrustum( &camera, M_PI / 6.0, cameraRho, 10.0, SCREENWIDTH, SCREENHEIGHT); camLookAt(&camera, cameraTarget, cameraRho, cameraPhi, cameraTheta); /* Textures. */ if (texInitializeFile(&texForSphere, "earth.png") != 0) return 8; if (texInitializeFile(&texForHalf, "webdubois.png") != 0) { texFinalize(&texForSphere); return 7; } /* 0th body: top lens sphere. */ if (bodyInitialize( &bodies[0], sphDATASIZE, sphGetIntersection, vanDATASIZE, vanGetMaterial) != 0) { texFinalize(&texForHalf); texFinalize(&texForSphere); return 6; } /* 1th body bottom lens sphere. */ if (bodyInitialize( &bodies[1], sphDATASIZE, sphGetIntersection, vanDATASIZE, vanGetMaterial) != 0) { for (int i = 0; i < 1; i += 1) bodyFinalize(&bodies[i]); texFinalize(&texForHalf); texFinalize(&texForSphere); return 5; } /* 2th body: another sphere. */ if (bodyInitialize( &bodies[2], sphDATASIZE, sphGetIntersection, vanDATASIZE, vanGetMaterial) != 0) { for (int i = 0; i < 2; i += 1) bodyFinalize(&bodies[i]); texFinalize(&texForHalf); texFinalize(&texForSphere); return 4; } /* 3th body: another sphere. */ if (bodyInitialize( &bodies[3], sphDATASIZE, sphGetIntersection, vanDATASIZE, vanGetMaterial) != 0) { for (int i = 0; i < 3; i += 1) bodyFinalize(&bodies[i]); texFinalize(&texForHalf); texFinalize(&texForSphere); return 3; } /* 4th body: AND. */ if (bodyInitialize( &bodies[4], andDATASIZE, andGetIntersection, vanDATASIZE, vanGetMaterial) != 0) { for (int i = 0; i < 4; i += 1) bodyFinalize(&bodies[i]); texFinalize(&texForHalf); texFinalize(&texForSphere); return 2; } /* 5th body: half space. */ if (bodyInitialize( &bodies[5], halfDATASIZE, halfGetIntersection, vanDATASIZE, vanGetMaterial) != 0) { for (int i = 0; i < 5; i += 1) bodyFinalize(&bodies[i]); texFinalize(&texForHalf); texFinalize(&texForSphere); return 1; } /* Shape data. */ double *rPtr = (double *)(bodies[0].shapeData); *rPtr = 5.1; rPtr = (double *)(bodies[1].shapeData); *rPtr = 5.1; rPtr = (double *)(bodies[2].shapeData); *rPtr = 1.0; rPtr = (double *)(bodies[3].shapeData); *rPtr = 2.0; bodyBody **bodiesArray = (bodyBody **)(bodies[4].shapeData); bodiesArray[0] = &bodies[0]; bodiesArray[1] = &bodies[1]; /* Material data. */ texTexture **texPtr = (texTexture **)(bodies[0].materialData); *texPtr = &texForSphere; texPtr = (texTexture **)(bodies[1].materialData); *texPtr = &texForSphere; texPtr = (texTexture **)(bodies[2].materialData); *texPtr = &texForSphere; texPtr = (texTexture **)(bodies[3].materialData); *texPtr = &texForSphere; texPtr = (texTexture **)(bodies[4].materialData); *texPtr = &texForSphere; texPtr = (texTexture **)(bodies[5].materialData); *texPtr = &texForHalf; /* Positions. */ double transl[3] = {0.0, 0.0, 5.0}; isoSetTranslation(&(bodies[0].isometry), transl); vec3Set(0.0, 0.0, -5.0, transl); isoSetTranslation(&(bodies[1].isometry), transl); vec3Set(2.0, 0.0, 3.0, transl); isoSetTranslation(&(bodies[2].isometry), transl); vec3Set(0.0, 3.0, 3.0, transl); isoSetTranslation(&(bodies[3].isometry), transl); vec3Set(0.0, 0.0, 7.0, transl); isoSetTranslation(&(bodies[4].isometry), transl); return 0; } void finalizeArtwork(void) { for (int i = 0; i < BODYNUM; i += 1) bodyFinalize(&bodies[i]); texFinalize(&texForHalf); texFinalize(&texForSphere); } /*** RENDERING ****************************************************************/ /* Given a ray x(t) = p + t u. Finds the color where that ray hits the scene (or the background), and outputs that color via the rgb parameter. */ void getSceneColor(const double p[3], const double u[3], double rgb[3]) { } void render(void) { } /*** USER INTERFACE ***********************************************************/ void handleKey( int key, int shiftIsDown, int controlIsDown, int altOptionIsDown, int superCommandIsDown) { if (key == GLFW_KEY_I) cameraPhi -= 0.1; else if (key == GLFW_KEY_K) cameraPhi += 0.1; else if (key == GLFW_KEY_J) cameraTheta -= 0.1; else if (key == GLFW_KEY_L) cameraTheta += 0.1; else if (key == GLFW_KEY_U) cameraRho *= 1.1; else if (key == GLFW_KEY_O) cameraRho *= 0.9; else if (key == GLFW_KEY_P) { if (camera.projectionType == camORTHOGRAPHIC) camSetProjectionType(&camera, camPERSPECTIVE); else camSetProjectionType(&camera, camORTHOGRAPHIC); } camSetFrustum( &camera, M_PI / 6.0, cameraRho, 10.0, SCREENWIDTH, SCREENHEIGHT); camLookAt(&camera, cameraTarget, cameraRho, cameraPhi, cameraTheta); } void handleTimeStep(double oldTime, double newTime) { if (floor(newTime) - floor(oldTime) >= 1.0) printf( "info: handleTimeStep: %f frames/s\n", 1.0 / (newTime - oldTime)); /* Rotate the two independent spheres. */ double rotAxis[3] = {1.0 / sqrt(3.0), 1.0 / sqrt(3.0), 1.0 / sqrt(3.0)}; double rotMatrix[3][3]; mat3AngleAxisRotation(newTime, rotAxis, rotMatrix); for (int k = 2; k < 4; k += 1) isoSetRotation(&(bodies[k].isometry), rotMatrix); render(); } int main(void) { if (pixInitialize(SCREENWIDTH, SCREENHEIGHT, "Ray Tracing") != 0) return 1; if (initializeArtwork() != 0) { pixFinalize(); return 2; } pixSetKeyDownHandler(handleKey); pixSetKeyRepeatHandler(handleKey); pixSetTimeStepHandler(handleTimeStep); pixRun(); finalizeArtwork(); pixFinalize(); return 0; }