X-Git-Url: https://git.ucc.asn.au/?p=atyndall%2Fcits2231.git;a=blobdiff_plain;f=scene.c;h=e5d2a172a92a29f7c790b2897f7de19fe30822bd;hp=242a10482f0cfae27c4c01f2bda37e7f38bf4100;hb=2a3932dad3ec48310af0b3c3cbb7685fc6105b03;hpb=fbcff5fdddb4380b77f5cc4eb8a9419266fc1355 diff --git a/scene.c b/scene.c index 242a104..e5d2a17 100644 --- a/scene.c +++ b/scene.c @@ -10,6 +10,7 @@ #include #include #include +#include #include "bitmap.h" @@ -124,10 +125,15 @@ int lightMoving = 0, lightStartX, lightStartY; /* Time varying or user-controled variables. */ static float jump = 0.0; -static float lightAngle = 0.0, lightHeight = 20; +static float lightAngle = 0.0, lightHeight = 5; GLfloat angle = -150; /* in degrees */ GLfloat angle2 = 30; /* in degrees */ +GLfloat near = -10; +GLfloat far = 10; + +static float zoomFactor = 1.0; + /** * Prints out error message when file cannot be read * @param fileName Name of file that could not be read @@ -483,18 +489,18 @@ void makeMenu() { * @param h New height */ void windowReshape(int w, int h) { - GLdouble near = -10.0; - GLdouble far = 10.0; - glViewport(0, 0, (GLsizei) w, (GLsizei) h); glMatrixMode(GL_PROJECTION); glLoadIdentity(); + GLfloat x = 2.0f*(200 + 0.5)/w-1.0; + GLfloat y = 2.0f*(200 + 0.5)/h-1.0; + glTranslatef(-x,-y,0.0f); if (w <= h) - glOrtho(near, far, near*(GLfloat)h/(GLfloat)w, - far*(GLfloat)h/(GLfloat)w, near, far); + glOrtho(zoomFactor*near, zoomFactor*far, zoomFactor*near*(GLfloat)h/(GLfloat)w, + zoomFactor*far*(GLfloat)h/(GLfloat)w, near, far); else - glOrtho(near*(GLfloat)w/(GLfloat)h, - far*(GLfloat)w/(GLfloat)h, near, far, near, far); + glOrtho(zoomFactor*near*(GLfloat)w/(GLfloat)h, + zoomFactor*far*(GLfloat)w/(GLfloat)h, zoomFactor*near, zoomFactor*far, near, far); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); } @@ -553,35 +559,58 @@ motion(int x, int y) } } +void idle() { + angle = (int)(angle + 10) % 360; + //angle2 = (int)(angle2 + 10) % 360; + printf("Angle 1: %f, Angle 2: %f\n", angle, angle2); + sleep(1); + glutPostRedisplay(); +} + + +int drawFloorRecurse = 5; + +void drawSquare(int recurseLevel, float x1, float y1, float x2, float y2) { + + if ( drawFloorRecurse != recurseLevel ) { + float xm = (x1 + x2) / 2.0; + float ym = (y1 + y2) / 2.0; + int rnew = recurseLevel + 1; + + // Split into four sub-quads + drawSquare(rnew, x1, y1, xm, ym); + drawSquare(rnew, x1, ym, xm, y2); + drawSquare(rnew, xm, ym, x2, y2); + drawSquare(rnew, xm, y1, x2, ym); + + } else { + glBegin(GL_QUADS); + glVertex3f(x1, 0.0, y1); + glVertex3f(x1, 0.0, y2); + glVertex3f(x2, 0.0, y2); + glVertex3f(x2, 0.0, y1); + glEnd(); + } + +} /** * Draw a floor. */ void drawFloor() { - glDisable(GL_LIGHTING); - - //if (useTexture) { - // glEnable(GL_TEXTURE_2D); - //} - - /*glBegin(GL_QUADS); - glTexCoord2f(0.0, 0.0); - glVertex3fv(floorVertices[0]); - glTexCoord2f(0.0, 16.0); - glVertex3fv(floorVertices[1]); - glTexCoord2f(16.0, 16.0); - glVertex3fv(floorVertices[2]); - glTexCoord2f(16.0, 0.0); - glVertex3fv(floorVertices[3]); - glEnd();*/ + +drawSquare(0, -100.0, -100.0, 100.0, 100.0); /*if (useTexture) { glDisable(GL_TEXTURE_2D); }*/ - glEnable(GL_LIGHTING); } +/*void drawSquare(GLfloat x1, GLfloat y1, GLfloat x2, GLfloat y2) { + drawSquare(0, x1, y1, x2, y2); +}*/ + /** * Display function */ @@ -589,11 +618,13 @@ void display() { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glLoadIdentity(); gluLookAt( - 0.0, 0.0, 60.0, /* eye is at (x,y,z) */ + 0.0, 0.0, 10.0, /* eye is at (x,y,z) */ 0.0, 0.0, 0.0, /* center is at (x,y,z) */ - 0.0, -1.0, 0.0 /* up is in postivie Y direction */ + 0.0, 1.0, 0.0 /* up is in postivie Y direction */ ); + glRotatef(30.0, 1.0, 0.0, 0.0); + /* Reposition the light source. */ lightPosition[0] = 12*cos(lightAngle); lightPosition[1] = lightHeight; @@ -602,7 +633,7 @@ void display() { glPushMatrix(); /* Perform scene rotations based on user mouse input. */ - glRotatef(angle2, 1.0, 0.0, 0.0); + glRotatef(angle, 0.0, 1.0, 0.0); glLightfv(GL_LIGHT0, GL_POSITION, lightPosition); @@ -614,9 +645,8 @@ void display() { glPushMatrix(); - //glTranslatef(0.0, 0.0, 0.0); - - glutSolidTeapot(30); // Draw teapot for test + glTranslatef(0.0, 1.0, 0.0); + glutWireTeapot(1); // Draw teapot for test glPopMatrix(); glPushMatrix(); @@ -625,7 +655,7 @@ void display() { /* Draw a yellow ball at the light source. */ glTranslatef(lightPosition[0], lightPosition[1], lightPosition[2]); - glutSolidSphere(1.0, 5, 5); + glutSolidSphere(1.0, 50, 50); glEnable(GL_LIGHTING); glPopMatrix(); @@ -643,17 +673,23 @@ void init() { glLoadIdentity(); gluPerspective( - 60.0, /* field of view in degree */ - 1.0, /* aspect ratio */ - 0.0, /* Z near */ - 900.0 /* Z far */ + 60.0, /* field of view in degree */ + 1.0, /* aspect ratio */ + near, /* Z near */ + far /* Z far */ ); - glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, 1); - glLightfv(GL_LIGHT0, GL_DIFFUSE, lightColor); - glLightf(GL_LIGHT0, GL_CONSTANT_ATTENUATION, 0.1); - glLightf(GL_LIGHT0, GL_LINEAR_ATTENUATION, 0.05); - glEnable(GL_LIGHT0); + +GLfloat diffuse0[] = {1.0, 1.0, 1.0, 1.0}; +GLfloat ambient0[] = {1.0, 1.0, 1.0, 1.0}; +GLfloat specular0[] = {1.0, 1.0, 1.0, 1.0}; +GLfloat light0_pos[] ={ 1.0, 2.0, 3,0, 1.0}; + +glEnable(GL_LIGHT0); +glLightfv(GL_LIGHT0, GL_POSITION, light0_pos); +glLightfv(GL_LIGHT0, GL_AMBIENT, ambient0); +glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse0); +glLightfv(GL_LIGHT0, GL_SPECULAR, specular0); glEnable(GL_LIGHTING); glMatrixMode(GL_MODELVIEW); @@ -692,7 +728,7 @@ int main(int argc, char **argv) { glDepthFunc(GL_LEQUAL); // the type glEnable(GL_CULL_FACE); glEnable(GL_TEXTURE_2D); - glLineWidth(3.0); + glLineWidth(1.0); glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); @@ -700,6 +736,7 @@ int main(int argc, char **argv) { glutDisplayFunc(display); glutMouseFunc(mouse); glutMotionFunc(motion); + //glutIdleFunc(idle); makeMenu();