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https://github.com/aap/librw.git
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hopalong orbit viewer; also bezier patches in playground
This commit is contained in:
aap
@@ -302,8 +302,8 @@ InitRW(void)
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camera->m_aspectRatio = 640.0f/448.0f;
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// camera->m_near = 0.5f;
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camera->m_near = 1.5f;
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// camera->m_far = 450.0f;
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camera->m_far = 15.0f;
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camera->m_far = 450.0f;
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// camera->m_far = 15.0f;
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camera->m_target.set(0.0f, 0.0f, 0.0f);
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camera->m_position.set(0.0f, -10.0f, 0.0f);
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// camera->setPosition(Vec3(0.0f, 5.0f, 0.0f));
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@@ -497,7 +497,7 @@ Draw(float timeDelta)
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getFrontBuffer();
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rw::SetRenderState(rw::FOGCOLOR, 0xFF0000FF);
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rw::SetRenderState(rw::FOGENABLE, 1);
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// rw::SetRenderState(rw::FOGENABLE, 1);
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camera->m_rwcam->fogPlane = camera->m_rwcam->nearPlane;
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static rw::RGBA clearcol = { 161, 161, 161, 0xFF };
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@@ -517,7 +517,7 @@ extern void endSoftras(void);
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endSoftras();
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}
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//im2dtest();
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im2dtest2();
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//im2dtest2();
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// Scene.clump->render();
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// im3dtest();
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@@ -525,7 +525,7 @@ extern void endSoftras(void);
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// testfont->print("foo ABC", 200, 200, true);
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// rendersplines();
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rendersplines();
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camera->m_rwcam->endUpdate();
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@@ -59,6 +59,20 @@ AddVertex(const rw::V3d &vert)
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float epsilon = 0.000001;
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class BezierSurf
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{
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public:
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// hardcoded 4x4 for now
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V3d verts[16];
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void mirrorX(void);
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void mirrorY(void);
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V3d eval(float u, float v);
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void drawHull(void);
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void drawShaded(void);
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};
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class RBCurve
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{
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public:
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@@ -126,6 +140,113 @@ evalBasisFast(int i, int d, float u, float knots[])
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return tmp[0];
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}
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void
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BezierSurf::mirrorX(void)
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{
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int i;
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for(i = 0; i < 16; i++)
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verts[i].x = -verts[i].x;
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}
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void
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BezierSurf::mirrorY(void)
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{
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int i;
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for(i = 0; i < 16; i++)
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verts[i].y = -verts[i].y;
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}
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V3d
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BezierSurf::eval(float u, float v)
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{
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int i, j;
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V3d out = { 0.0f, 0.0f, 0.0f };
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float us[4], vs[4];
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float iu = 1.0f-u;
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float iv = 1.0f-v;
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us[0] = iu*iu*iu;
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us[1] = 3.0f*u*iu*iu;
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us[2] = 3.0f*u*u*iu;
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us[3] = u*u*u;
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vs[0] = iv*iv*iv;
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vs[1] = 3.0f*v*iv*iv;
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vs[2] = 3.0f*v*v*iv;
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vs[3] = v*v*v;
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for(i = 0; i < 4; i++)
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for(j = 0; j < 4; j++)
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out = add(out, scale(verts[j+i*4],us[j]*vs[i]));
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return out;
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}
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void
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BezierSurf::drawHull(void)
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{
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rw::SetRenderStatePtr(rw::TEXTURERASTER, nil);
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rw::SetRenderState(rw::FOGENABLE, 0);
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imVert.setU(0.0f);
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imVert.setV(0.0f);
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imVert.setColor(138, 72, 51, 255);
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// imVert.setColor(228, 172, 121, 255);
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int iu, iv;
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for(iv = 0; iv < 4; iv++){
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BeginIm3D(rw::PRIMTYPEPOLYLINE);
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for(iu = 0; iu < 4; iu++)
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AddVertex(verts[iu + iv*4]);
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EndIm3D();
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}
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for(iu = 0; iu < 4; iu++){
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BeginIm3D(rw::PRIMTYPEPOLYLINE);
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for(iv = 0; iv < 4; iv++)
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AddVertex(verts[iu + iv*4]);
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EndIm3D();
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}
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}
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void
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BezierSurf::drawShaded(void)
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{
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V3d vert;
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int iu, iv;
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float u, v;
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rw::SetRenderStatePtr(rw::TEXTURERASTER, nil);
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rw::SetRenderState(rw::FOGENABLE, 0);
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imVert.setU(0.0f);
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imVert.setV(0.0f);
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imVert.setColor(0, 128, 240, 255);
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float endu = 1.0f - epsilon;
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float endv = 1.0f - epsilon;
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float uinc = (endu-0.0f)/40.0f;
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float vinc = (endv-0.0f)/40.0f;
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float vnext;
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for(v = 0.0f;; v = vnext){
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if(v > endv)
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v = endv;
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vnext = v + vinc;
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BeginIm3D(rw::PRIMTYPETRISTRIP);
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for(u = 0.0f;; u += uinc){
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if(u > endu)
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u = endu;
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AddVertex(eval(u, v));
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AddVertex(eval(u, vnext));
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if(u >= endu)
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break;
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}
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EndIm3D();
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if(vnext >= endv)
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break;
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}
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}
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V3d
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RBCurve::eval(float u)
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{
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@@ -153,7 +274,7 @@ RBCurve::drawHull(void)
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{
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int i;
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rw::SetRenderState(rw::TEXTURERASTER, nil);
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rw::SetRenderStatePtr(rw::TEXTURERASTER, nil);
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rw::SetRenderState(rw::FOGENABLE, 0);
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BeginIm3D(rw::PRIMTYPEPOLYLINE);
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@@ -173,7 +294,7 @@ RBCurve::drawSpline(void)
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float u, endu;
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V3d vert;
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rw::SetRenderState(rw::TEXTURERASTER, nil);
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rw::SetRenderStatePtr(rw::TEXTURERASTER, nil);
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rw::SetRenderState(rw::FOGENABLE, 0);
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BeginIm3D(rw::PRIMTYPEPOLYLINE);
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imVert.setU(0.0f);
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@@ -238,7 +359,7 @@ RBSurf::eval(float u, float v)
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void
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RBSurf::drawHull(void)
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{
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rw::SetRenderState(rw::TEXTURERASTER, nil);
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rw::SetRenderStatePtr(rw::TEXTURERASTER, nil);
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rw::SetRenderState(rw::FOGENABLE, 0);
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imVert.setU(0.0f);
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@@ -269,7 +390,7 @@ RBSurf::drawIsoparms(void)
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int iu, iv;
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float u, v;
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rw::SetRenderState(rw::TEXTURERASTER, nil);
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rw::SetRenderStatePtr(rw::TEXTURERASTER, nil);
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rw::SetRenderState(rw::FOGENABLE, 0);
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imVert.setU(0.0f);
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@@ -323,7 +444,7 @@ RBSurf::drawShaded(void)
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int iu, iv;
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float u, v;
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rw::SetRenderState(rw::TEXTURERASTER, nil);
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rw::SetRenderStatePtr(rw::TEXTURERASTER, nil);
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rw::SetRenderState(rw::FOGENABLE, 0);
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imVert.setU(0.0f);
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@@ -362,6 +483,92 @@ RBSurf::drawShaded(void)
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RBCurve testspline1, testspline2;
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RBSurf testsurf;
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V3d teapotVerts[] = {
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{ 0.2000, 0.0000, 2.70000 }, { 0.2000, -0.1120, 2.70000 },
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{ 0.1120, -0.2000, 2.70000 }, { 0.0000, -0.2000, 2.70000 },
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{ 1.3375, 0.0000, 2.53125 }, { 1.3375, -0.7490, 2.53125 },
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{ 0.7490, -1.3375, 2.53125 }, { 0.0000, -1.3375, 2.53125 },
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{ 1.4375, 0.0000, 2.53125 }, { 1.4375, -0.8050, 2.53125 },
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{ 0.8050, -1.4375, 2.53125 }, { 0.0000, -1.4375, 2.53125 },
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{ 1.5000, 0.0000, 2.40000 }, { 1.5000, -0.8400, 2.40000 },
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{ 0.8400, -1.5000, 2.40000 }, { 0.0000, -1.5000, 2.40000 },
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{ 1.7500, 0.0000, 1.87500 }, { 1.7500, -0.9800, 1.87500 },
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{ 0.9800, -1.7500, 1.87500 }, { 0.0000, -1.7500, 1.87500 },
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{ 2.0000, 0.0000, 1.35000 }, { 2.0000, -1.1200, 1.35000 },
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{ 1.1200, -2.0000, 1.35000 }, { 0.0000, -2.0000, 1.35000 },
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{ 2.0000, 0.0000, 0.90000 }, { 2.0000, -1.1200, 0.90000 },
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{ 1.1200, -2.0000, 0.90000 }, { 0.0000, -2.0000, 0.90000 },
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{ -2.0000, 0.0000, 0.90000 }, { 2.0000, 0.0000, 0.45000 },
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{ 2.0000, -1.1200, 0.45000 }, { 1.1200, -2.0000, 0.45000 },
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{ 0.0000, -2.0000, 0.45000 }, { 1.5000, 0.0000, 0.22500 },
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{ 1.5000, -0.8400, 0.22500 }, { 0.8400, -1.5000, 0.22500 },
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{ 0.0000, -1.5000, 0.22500 }, { 1.5000, 0.0000, 0.15000 },
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{ 1.5000, -0.8400, 0.15000 }, { 0.8400, -1.5000, 0.15000 },
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{ 0.0000, -1.5000, 0.15000 }, { -1.6000, 0.0000, 2.02500 },
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{ -1.6000, -0.3000, 2.02500 }, { -1.5000, -0.3000, 2.25000 },
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{ -1.5000, 0.0000, 2.25000 }, { -2.3000, 0.0000, 2.02500 },
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{ -2.3000, -0.3000, 2.02500 }, { -2.5000, -0.3000, 2.25000 },
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{ -2.5000, 0.0000, 2.25000 }, { -2.7000, 0.0000, 2.02500 },
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{ -2.7000, -0.3000, 2.02500 }, { -3.0000, -0.3000, 2.25000 },
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{ -3.0000, 0.0000, 2.25000 }, { -2.7000, 0.0000, 1.80000 },
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{ -2.7000, -0.3000, 1.80000 }, { -3.0000, -0.3000, 1.80000 },
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{ -3.0000, 0.0000, 1.80000 }, { -2.7000, 0.0000, 1.57500 },
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{ -2.7000, -0.3000, 1.57500 }, { -3.0000, -0.3000, 1.35000 },
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{ -3.0000, 0.0000, 1.35000 }, { -2.5000, 0.0000, 1.12500 },
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{ -2.5000, -0.3000, 1.12500 }, { -2.6500, -0.3000, 0.93750 },
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{ -2.6500, 0.0000, 0.93750 }, { -2.0000, -0.3000, 0.90000 },
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{ -1.9000, -0.3000, 0.60000 }, { -1.9000, 0.0000, 0.60000 },
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{ 1.7000, 0.0000, 1.42500 }, { 1.7000, -0.6600, 1.42500 },
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{ 1.7000, -0.6600, 0.60000 }, { 1.7000, 0.0000, 0.60000 },
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{ 2.6000, 0.0000, 1.42500 }, { 2.6000, -0.6600, 1.42500 },
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{ 3.1000, -0.6600, 0.82500 }, { 3.1000, 0.0000, 0.82500 },
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{ 2.3000, 0.0000, 2.10000 }, { 2.3000, -0.2500, 2.10000 },
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{ 2.4000, -0.2500, 2.02500 }, { 2.4000, 0.0000, 2.02500 },
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{ 2.7000, 0.0000, 2.40000 }, { 2.7000, -0.2500, 2.40000 },
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{ 3.3000, -0.2500, 2.40000 }, { 3.3000, 0.0000, 2.40000 },
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{ 2.8000, 0.0000, 2.47500 }, { 2.8000, -0.2500, 2.47500 },
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{ 3.5250, -0.2500, 2.49375 }, { 3.5250, 0.0000, 2.49375 },
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{ 2.9000, 0.0000, 2.47500 }, { 2.9000, -0.1500, 2.47500 },
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{ 3.4500, -0.1500, 2.51250 }, { 3.4500, 0.0000, 2.51250 },
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{ 2.8000, 0.0000, 2.40000 }, { 2.8000, -0.1500, 2.40000 },
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{ 3.2000, -0.1500, 2.40000 }, { 3.2000, 0.0000, 2.40000 },
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{ 0.0000, 0.0000, 3.15000 }, { 0.8000, 0.0000, 3.15000 },
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{ 0.8000, -0.4500, 3.15000 }, { 0.4500, -0.8000, 3.15000 },
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{ 0.0000, -0.8000, 3.15000 }, { 0.0000, 0.0000, 2.85000 },
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{ 1.4000, 0.0000, 2.40000 }, { 1.4000, -0.7840, 2.40000 },
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{ 0.7840, -1.4000, 2.40000 }, { 0.0000, -1.4000, 2.40000 },
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{ 0.4000, 0.0000, 2.55000 }, { 0.4000, -0.2240, 2.55000 },
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{ 0.2240, -0.4000, 2.55000 }, { 0.0000, -0.4000, 2.55000 },
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{ 1.3000, 0.0000, 2.55000 }, { 1.3000, -0.7280, 2.55000 },
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{ 0.7280, -1.3000, 2.55000 }, { 0.0000, -1.3000, 2.55000 },
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{ 1.3000, 0.0000, 2.40000 }, { 1.3000, -0.7280, 2.40000 },
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{ 0.7280, -1.3000, 2.40000 }, { 0.0000, -1.3000, 2.40000 }
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};
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int teapotPatches[10][16] = {
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{ 118, 118, 118, 118, 124, 122, 119, 121,
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123, 126, 125, 120, 40, 39, 38, 37 },
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{ 102, 103, 104, 105, 4, 5, 6, 7,
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8, 9, 10, 11, 12, 13, 14, 15 },
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{ 12, 13, 14, 15, 16, 17, 18, 19,
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20, 21, 22, 23, 24, 25, 26, 27 },
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{ 24, 25, 26, 27, 29, 30, 31, 32,
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33, 34, 35, 36, 37, 38, 39, 40 },
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{ 96, 96, 96, 96, 97, 98, 99, 100,
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101, 101, 101, 101, 0, 1, 2, 3 },
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{ 0, 1, 2, 3, 106, 107, 108, 109,
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110, 111, 112, 113, 114, 115, 116, 117 },
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{ 41, 42, 43, 44, 45, 46, 47, 48,
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49, 50, 51, 52, 53, 54, 55, 56 },
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{ 53, 54, 55, 56, 57, 58, 59, 60,
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61, 62, 63, 64, 28, 65, 66, 67 },
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{ 68, 69, 70, 71, 72, 73, 74, 75,
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76, 77, 78, 79, 80, 81, 82, 83 },
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{ 80, 81, 82, 83, 84, 85, 86, 87,
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88, 89, 90, 91, 92, 93, 94, 95 },
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};
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BezierSurf teapotSurfs[32];
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void
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initsplines(void)
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{
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@@ -412,6 +619,7 @@ initsplines(void)
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V(-61.9913, 9.158239, 0);
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V(-32.32231, 27.23371, 0);
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V(25.80961, -4.820126, 0);
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#undef V
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testspline2.knots.clear();
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testspline2.knots.push_back(0);
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testspline2.knots.push_back(0);
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@@ -479,6 +687,7 @@ initsplines(void)
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V(25.75483, 70.07219, 31.27717);
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V(56.61724, 70.07219, -2.498198);
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V(86.35364, 70.07219, 12.53265);
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#undef V
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testsurf.knotsU.clear();
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testsurf.knotsU.push_back(0);
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testsurf.knotsU.push_back(0);
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@@ -503,18 +712,39 @@ initsplines(void)
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testsurf.knotsV.push_back(1);
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testsurf.update();
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int i, j;
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for(i = 0; i < 10; i++)
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for(j = 0; j < 16; j++)
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teapotSurfs[i].verts[j] = teapotVerts[teapotPatches[i][j]];
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for(i = 0; i < 10; i++){
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teapotSurfs[i+10] = teapotSurfs[i];
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teapotSurfs[i+10].mirrorY();
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}
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for(i = 0; i < 6; i++){
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teapotSurfs[i+20] = teapotSurfs[i];
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teapotSurfs[i+20].mirrorX();
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teapotSurfs[i+20+6] = teapotSurfs[i+10];
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teapotSurfs[i+20+6].mirrorX();
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}
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}
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void
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rendersplines(void)
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{
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testspline1.drawHull();
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testspline1.drawSpline();
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// testspline1.drawHull();
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// testspline1.drawSpline();
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// testspline2.drawHull();
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// testspline2.drawSpline();
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testsurf.drawHull();
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testsurf.drawShaded();
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testsurf.drawIsoparms();
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// testsurf.drawHull();
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// testsurf.drawShaded();
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// testsurf.drawIsoparms();
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int i;
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for(i = 0; i < 32; i++){
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teapotSurfs[i].drawHull();
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teapotSurfs[i].drawShaded();
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}
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}
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Reference in New Issue
Block a user