From 8a16f3c0dbbf1c5a61a1a5bafbace81b2f0f5bb9 Mon Sep 17 00:00:00 2001
From: Rtch90 <ritchie.cunningham@protonmail.com>
Date: Tue, 21 Nov 2017 19:28:44 +0000
Subject: [PATCH] [Add?] Some work in progress planet drawing. Nothing to pay
attention to. :P
---
src/planet.cpp | 109 ++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 108 insertions(+), 1 deletion(-)
diff --git a/src/planet.cpp b/src/planet.cpp
index f83ddbd..22e994c 100644
--- a/src/planet.cpp
+++ b/src/planet.cpp
@@ -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();