ps3.zip_c#绘制多边形_ps3_ps3绘制草丛

/* * Computer Graphics: Andrew Hanson, Indiana University * GLUT Graphics Exercise Template * cc -o template.linux template.c -lglut -lGLU -lGL -lm * * */ #define shift = 9; #include <stdio.h> #include <stdlib.h> #include <math.h> #include <GL/glut.h> /* Local Graphics Definitions. Also in /l/b481/include, /l/b581/include */ #include "defs.h" #include "dectEdge.c" /* double y0,y1; math.h conflict */ /***************************************************************/ /******************** MY GLOBAL VARIABLES **********************/ /***************************************************************/ int mouseButtons = 0; int MouseModifiers = 0; int X=0, Y=0, dX=0, dY=0; int main_window; int main_height, main_width; float mat[16]; struct POINT /*the position of the mouse*/ { float x; float y; }start={-1, -1}, current={-1,-1},center, ocenter, inticenter,off={0,0}; int myDrawingMode=1; int rad=200; int inside = GL_FALSE; int drag = GL_FALSE; float iflag; float offsetx, offsety; float polygonx[50], polygony[50]; float opolygonx[50], opolygony[50]; int i=0; float M[3][3]; float Tx, Ty; int j; int k=0; float px[50],py[50],pz[50],h[50],d[50],D,t; int m=0; pointq Q; int temp = 0, vtemp = 0; int in = GL_FALSE; float xTrans = 0; float yTrans = 0; float xTransInit = 0; float yTransInit = 0; float xScale = 0; float yScale = 0; float xScaleInit = 0; float yScaleInit = 0; float xRotAng = 0; float yRotAng = 0; float xRotAngInit = 0; float yRotAngInit = 0; int scale = 1; float N[3][3], M[3][3], L[3][3]; /***************************************************************/ /*********************** MOUSE CALLBACKS ***********************/ /***************************************************************/ /* Mouse Button UP/DOWN or DOWN/UP transition only */ void mouse(int button, int state, int x, int y) { X = x; Y = main_height - y - 1; /* Invert to right-handed system */ button = (1 << button); MouseModifiers = glutGetModifiers(); /* bitmask with GLUT_ACTIVE_SHIFT, GLUT_ACTIVE_CTRL, GLUT_ACTIVE_ALT */ if (state == GLUT_DOWN) { mouseButtons |= button; start.x = X; start.y = Y; // Xp= X; Yp= Y; current.x = start.x;current.y = start.y; switch (myDrawingMode) { case 1: drag = GL_TRUE; ocenter.x = center.x; ocenter.y = center.y; break; case 2: drag = GL_TRUE; break; case 3: switch(mouseButtons ) { case 0x1: /* Left Mouse Button */ fprintf(stderr,"Left+shift\n"); xTransInit = current.x - start.x; yTransInit = current.y - start.y; break; case 0x2: /* Middle Mouse Button */ xScaleInit = current.x - start.x; yScaleInit = current.y - start.y; break; case 0x4: /* Right Mouse Button */ xRotAngInit = current.x - start.x; yRotAngInit = current.y - start.y; break; } break; } } else { mouseButtons &= (~(button)); current.x = X; current.y = Y; switch (myDrawingMode) { case 1: drag = GL_FALSE; break; case 2: drag = GL_FALSE; if (MouseModifiers != GLUT_ACTIVE_SHIFT){ polygonx[i] = current.x; polygony[i] = current.y;i++; } break; case 3: break; } } // fprintf(stderr,"Comment this out: mouse buttons = [%d], modifiers = [%d] \n state = %s, mouse at (%d,%d)\n", mouseButtons, MouseModifiers, state == GLUT_UP? "Just Up":"Just Down",x,y); glutPostRedisplay(); } /* Mouse motion WHILE BUTTON DOWN */ /* COMPLAINS if you call glutGetModifiers() here!! */ void motion(int x, int y) { //fprintf(stderr,"Comment this out: mouse at (%d,%d)\nmouse buttons = [%d], modifiers = [%d]\n", x,y, mouseButtons, MouseModifiers); X = x; Y = main_height - y - 1; /* Invert to right-handed system */ current.x = X; current.y = Y; if (MouseModifiers == GLUT_ACTIVE_SHIFT) { // SHIFT is down switch(mouseButtons ) { case 0x1: /* Left Mouse Button */ fprintf(stderr,"Left+shift\n"); xTrans += (current.x - start.x - xTransInit) / scale; yTrans += (current.y - start.y - yTransInit) / scale; xTransInit = current.x - start.x; yTransInit = current.y - start.y; break; case 0x2: /* Middle Mouse Button */ fprintf(stderr,"middle+shift\n"); xScale += (current.x - start.x - xScaleInit) / (100* scale); yScale += (current.y - start.y - yScaleInit) / (100* scale); xScaleInit = current.x - start.x; yScaleInit = current.y - start.y; break; case 0x4: /* Right Mouse Button */ fprintf(stderr,"right+shift\n"); xRotAng += (current.x - start.x - xRotAngInit) / (10* scale); yRotAng += (current.y - start.y - yRotAngInit) / (10* scale); xRotAngInit = current.x - start.x; yRotAngInit = current.y - start.y; break; } } glutPostRedisplay(); } /* Mouse motion WHILE ALL BUTTONS UP */ /* COMPLAINS if you call glutGetModifiers() here!! */ void passive(int x, int y) { X = x; Y = main_height - y - 1; current.x = X; current.y = Y; //drag = GL_FALSE; switch (myDrawingMode) { case 1: //fprintf(stderr,"inside%f\n", ((current.x-center.x)*(current.x-center.x) + (current.y-center.y)*(current.y-center.y)) - rad*rad); iflag = ((current.x-center.x)*(current.x-center.x) + (current.y-center.y)*(current.y-center.y)) - rad*rad; if (iflag < 0) { inside = GL_TRUE; } else { inside = GL_FALSE; } break; case 2: for (j=0; j<i; j++) { if (j+1 == i){Q = dectEdge(polygonx[j], polygony[j], polygonx[0], polygony[0], current.x, current.y); }else{ Q = dectEdge(polygonx[j], polygony[j], polygonx[j+1], polygony[j+1], current.x, current.y);} px[j] = Q.x; py[j] = Q.y; h[j] = Q.h;printf("x=%lf y=%lf h=%lf point%d\n",px[j],py[j],h[j], j); } j = i; while(j > 0) { j--; if (h[temp] > h[j]){temp = j;} }printf("nearest x=%lf y=%lf h=%lf point:%d\n",px[temp],py[temp],h[temp], temp); if (temp+1 == i){t =