116 lines
2 KiB
C++
116 lines
2 KiB
C++
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#include <windows.h>
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#include <GL/glu.h>
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#ifdef X11
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#include <GL/glx.h>
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#endif
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#include <math.h>
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#include <stdio.h>
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#ifdef WIN32
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#include "stonehen.h"
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#endif
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#include "Ring.h"
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inline float radians(float a) {return a * M_PI / 180.0;};
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Ring::Ring()
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{
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Point sar_dim, lin_dim;
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radius = 10;
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nstones = 30;
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sar_dim.set(.2, .5, 1);
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sarcen.set_dimensions(sar_dim);
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sarcen.translate(radius, 0, sar_dim.pt[2]);
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angle = 360.0 / (float)nstones;
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lin_dim.set(.2, .99 * tan(2.0 * M_PI / (float)nstones) *
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(radius - sar_dim.pt[0]) / 2.0, .2);
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lintel.set_dimensions(lin_dim);
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lintel.translate(radius, 0, 2.*sar_dim.pt[2] + lin_dim.pt[2]);
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}
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Ring::~Ring()
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{
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}
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void Ring::erode(float p)
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{
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sarcen.erode(p);
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lintel.erode(p);
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}
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void Ring::draw()
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{
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draw_sarcens();
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draw_lintels();
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}
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void Ring::draw_sarcens()
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{
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int i;
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for (i = 0; i < nstones; i++) {
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glPushMatrix();
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glRotatef(i * angle, 0, 0, 1);
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sarcen.draw();
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glPopMatrix();
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}
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}
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void Ring::draw_lintels()
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{
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int i;
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glPushMatrix();
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glRotatef(angle / 2.0, 0, 0, 1);
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for (i = 0; i < nstones; i++) {
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glPushMatrix();
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glRotatef(i * angle, 0, 0, 1);
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lintel.draw();
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glPopMatrix();
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}
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glPopMatrix();
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}
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void Ring::draw_shadow(Point dlight, GLfloat blur,
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Color color, Color diffuse)
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{
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draw_sarcens_shadows(dlight, blur, color, diffuse);
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draw_lintels_shadows(dlight, blur, color, diffuse);
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}
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void Ring::draw_sarcens_shadows(Point dlight, GLfloat blur,
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Color color, Color diffuse)
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{
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int i;
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Stone proto;
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proto = sarcen;
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for (i = 0; i < nstones; i++) {
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proto.rotate_self_aboutz(angle);
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proto.draw_shadow(dlight, blur, color, diffuse);
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}
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}
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void Ring::draw_lintels_shadows(Point dlight, GLfloat blur,
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Color color, Color diffuse)
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{
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int i;
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Stone proto;
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proto = lintel;
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proto.rotate_self_aboutz(angle / 2.0);
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for (i = 0; i < nstones; i++) {
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proto.rotate_self_aboutz(angle);
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proto.draw_shadow(dlight, blur, color, diffuse);
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}
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}
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