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[Add?] Some work in progress planet drawing. Nothing to pay attention

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to. :P
This commit is contained in:
Rtch90 2017-11-21 19:28:44 +00:00
parent 1b35d387b9
commit 8a16f3c0db
1 changed files with 108 additions and 1 deletions
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109
src/planet.cpp
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@ -2,6 +2,7 @@
#include "planet.h"
#include "frame.h"
#include "l3d.h"
#include "world_view.h"
Planet::Planet(StarSystem::SBody::SubType subtype) : Body() {
m_radius = 6378135.0;
@ -34,6 +35,110 @@ void Planet::SetRadius(double radius) {
dGeomSphereSetRadius(m_geom, radius);
}
void subdivide(vector3d& v1, vector3d& v2, vector3d& v3, vector3d& v4, int depth) {
if(depth) {
depth--;
vector3d v5 = v1+v2;
vector3d v6 = v2+v3;
vector3d v7 = v3+v4;
vector3d v8 = v4+v1;
vector3d v9 = v1+v2+v3+v4;
v5.Normalize();
v6.Normalize();
v7.Normalize();
v8.Normalize();
v9.Normalize();
/* XXX WRONG, need to do projection stuff! */
#if 0
/* Front-facing. */
bool ff1, ff2, ff3, ff4, ff5, ff6, ff7, ff8, ff9;
const matrix4x4d& r = L3D::world_view->viewingRotation;
ff1 = (r*v1).z > 0;
ff2 = (r*v2).z > 0;
ff3 = (r*v3).z > 0;
ff4 = (r*v4).z > 0;
ff5 = (r*v5).z > 0;
ff6 = (r*v6).z > 0;
ff7 = (r*v7).z > 0;
ff8 = (r*v8).z > 0;
ff9 = (r*v9).z > 0;
#endif
subdivide(v1, v5, v8, v8, depth);
subdivide(v5, v2, v6, v9, depth);
subdivide(v9, v6, v3, v7, depth);
subdivide(v8, v9, v7, v4, depth);
} else {
glBegin(GL_TRIANGLE_STRIP);
glNormal3dv(&v1.x);
glVertex3dv(&v1.x);
glNormal3dv(&v2.x);
glVertex3dv(&v2.x);
glNormal3dv(&v4.x);
glVertex3dv(&v4.x);
glNormal3dv(&v3.x);
glVertex3dv(&v3.x);
glEnd();
}
}
void DrawLovelyRoundCube(double radius) {
const float mdiff[] = { 0.8, 0.8, 0.5, 1.0 };
const float mambient[] = { 0.02, 0.02, 0.01, 1.0 };
const float mdiff2[] = { 0.2, 0.2, 0.8, 0.5 };
const float mambient2[] = { 0.01, 0.01, 0.04, 0.5 };
glMaterialfv(GL_FRONT, GL_AMBIENT, mambient);
glMaterialfv(GL_FRONT, GL_DIFFUSE, mdiff);
vector3d p1(1, 1, 1);
vector3d p2(-1, 1, 1);
vector3d p3(-1, -1, 1);
vector3d p4(1, -1, 1);
vector3d p5(1, 1, -1);
vector3d p6(-1, 1, -1);
vector3d p7(-1, -1, -1);
vector3d p8(1, -1, -1);
p1.Normalize();
p2.Normalize();
p3.Normalize();
p4.Normalize();
p5.Normalize();
p6.Normalize();
p7.Normalize();
p8.Normalize();
//p1 *= radius;
//p2 *= radius;
//p3 *= radius;
//p4 *= radius;
//p5 *= radius;
//p6 *= radius;
//p7 *= radius;
//p8 *= radius;
//glDisable(GL_CULL_FACE);
glEnable(GL_NORMALIZE);
subdivide(p1, p2, p3, p3, 3);
subdivide(p4, p3, p7, p8, 3);
subdivide(p1, p4, p8, p5, 3);
subdivide(p2, p1, p5, p6, 3);
subdivide(p3, p2, p6, p7, 3);
subdivide(p8, p7, p6, p5, 3);
glEnable(GL_BLEND);
glMaterialfv(GL_FRONT, GL_AMBIENT, mambient2);
glMaterialfv(GL_FRONT, GL_DIFFUSE, mdiff2);
subdivide(p1, p2, p3, p4, 3);
glDisable(GL_BLEND);
glDisable(GL_NORMALIZE);
}
void Planet::Render(const Frame* a_camFrame) {
glPushMatrix();
glDisable(GL_DEPTH_TEST);
@ -61,7 +166,9 @@ void Planet::Render(const Frame* a_camFrame) {
glEnd();
glEnable(GL_LIGHTING);
} else {
gluSphere(L3D::gluQuadric, rad, 100, 100);
glScalef(rad, rad, rad);
DrawLovelyRoundCube(1.0f);
//gluSphere(L3D::gluQuadric, rad, 100, 100);
}
glEnable(GL_DEPTH_TEST);
glPopMatrix();