ref: 95edbe92a75b47a7a36e4c41bb450a718feabd60
parent: 0aefb6df51b29b022ec16394ce1a2132e9d41ac1
author: rodri <rgl@antares-labs.eu>
date: Wed Oct 2 16:49:14 EDT 2024
med: initial work on vertex selection.
--- a/med.c
+++ b/med.c
@@ -10,18 +10,8 @@
#include "fns.h"
enum {- K↑,
- K↓,
- K←,
- K→,
- Krise,
- Kfall,
- KR↑,
- KR↓,
- KR←,
- KR→,
- KR↺,
- KR↻,
+ Kmodeorb,
+ Kmodesel,
Kzoomin,
Kzoomout,
Khud,
@@ -38,6 +28,11 @@
Se
};
+enum {+ OMOrbit,
+ OMSelect,
+};
+
typedef struct Camcfg Camcfg;
struct Camcfg
{@@ -55,18 +50,8 @@
Compass compass; /* 3d compass */
Rune keys[Ke] = {- [K↑] = Kup,
- [K↓] = Kdown,
- [K←] = Kleft,
- [K→] = Kright,
- [Krise] = Kpgup,
- [Kfall] = Kpgdown,
- [KR↑] = 'w',
- [KR↓] = 's',
- [KR←] = 'a',
- [KR→] = 'd',
- [KR↺] = 'q',
- [KR↻] = 'e',
+ [Kmodeorb] = 'r',
+ [Kmodesel] = 's',
[Kzoomin] = 'z',
[Kzoomout] = 'x',
[Khud] = 'h',
@@ -93,16 +78,11 @@
40*DEG, 0.01, 10, PERSPECTIVE
};
Point3 center = {0,0,0,1};-RFrame3 ONF3 = { /* default orthonormal rframe */- 0,0,0,1,
- 1,0,0,0,
- 0,1,0,0,
- 0,0,1,0
-};
LightSource light; /* global point light */
static int doprof;
static int showhud;
+static int opmode;
Color (*tsampler)(Texture*,Point2);
#include "shaders.inc"
@@ -119,6 +99,54 @@
return Pt3(q.i, q.j, q.k, w);
}
+/*
+ * p is the point to test
+ * p0 and p1 are the centers of the circles at each end of the cylinder
+ * r is the radius of these circles
+ */
+int
+ptincylinder(Point3 p, Point3 p0, Point3 p1, double r)
+{+ Point3 p01, p0p, p1p;
+ double h;
+
+ p01 = subpt3(p1, p0);
+ p0p = subpt3(p, p0);
+ p1p = subpt3(p, p1);
+ h = vec3len(p01);
+
+ if(h == 0)
+ return 0;
+
+ return dotvec3(p0p, p01) >= 0 &&
+ dotvec3(p1p, p01) <= 0 &&
+ vec3len(crossvec3(p0p, p01))/h <= r;
+}
+
+/*
+ * p is the point to test
+ * p0 is the apex
+ * p1 is the center of the base
+ * br is the radius of the base
+ */
+int
+ptincone(Point3 p, Point3 p0, Point3 p1, double br)
+{+ Point3 p01, p0p;
+ double h, d, r;
+
+ p01 = subpt3(p1, p0);
+ p0p = subpt3(p, p0);
+ h = vec3len(p01);
+ d = dotvec3(p0p, normvec3(p01));
+
+ if(h == 0 || d < 0 || d > h)
+ return 0;
+
+ r = d/h * br;
+ return vec3len(crossvec3(p0p, p01))/h <= r;
+}
+
void
materializefrustum(void)
{@@ -214,7 +242,6 @@
m = newmodel();
e = newentity("basis", m);- e->RFrame3 = ONF3;
memset(prims, 0, sizeof prims);
prims[0].type = prims[1].type = prims[2].type = PLine;
@@ -266,8 +293,23 @@
}
void
+drawopmode(void)
+{+ static char *opmodestr[] = {+ [OMOrbit] "ORBIT",
+ [OMSelect] "SELECT",
+ nil
+ };
+ Point p;
+
+ p = Pt(screen->r.min.x + 10, screen->r.max.y - font->height-10);
+ stringbg(screen, p, display->white, ZP, font, opmodestr[opmode], display->black, ZP);
+}
+
+void
drawstats(void)
{+ Point p;
int i;
snprint(stats[Sfov], sizeof(stats[Sfov]), "FOV %g°", cam->fov/DEG);
@@ -281,8 +323,10 @@
!cam->stats.min? 0: 1e9/cam->stats.min,
!cam->stats.v? 0: 1e9/cam->stats.v);
snprint(stats[Sframes], sizeof(stats[Sframes]), "frame %llud", cam->stats.nframes);
- for(i = 0; i < Se; i++)
- stringbg(screen, addpt(screen->r.min, Pt(10,10 + i*font->height)), display->black, ZP, font, stats[i], display->white, ZP);
+ for(i = 0; i < Se; i++){+ p = addpt(screen->r.min, Pt(10,10 + i*font->height));
+ stringbg(screen, p, display->black, ZP, font, stats[i], display->white, ZP);
+ }
}
void
@@ -290,6 +334,7 @@
{lockdisplay(display);
draw(screen, screen->r, screenb, nil, ZP);
+ drawopmode();
if(showhud)
drawstats();
flushimage(display, 1);
@@ -299,12 +344,19 @@
void
renderproc(void *)
{- static Image *bg;
+ static Image *bg, *mist;
uvlong t0, Δt;
threadsetname("renderproc");- bg = eallocimage(display, UR, XRGB32, 1, 0x888888FF);
+ bg = eallocimage(display, Rect(0,0,32,32), XRGB32, 1, DNofill);
+ mist = eallocimage(display, UR, RGBA32, 1, 0xDF);
+ draw(bg, Rect( 0, 0,16,16), display->white, nil, ZP);
+ draw(bg, Rect(16, 0,32,16), display->black, nil, ZP);
+ draw(bg, Rect( 0,16,16,32), display->black, nil, ZP);
+ draw(bg, Rect(16,16,32,32), display->white, nil, ZP);
+ draw(bg, bg->r, mist, nil, ZP);
+ freeimage(mist);
t0 = nsec();
for(;;){@@ -311,7 +363,9 @@
qlock(&scenelk);
shootcamera(cam, shader);
qunlock(&scenelk);
+
shootcamera(compass.cam, getshader("ident"));+
Δt = nsec() - t0;
if(Δt > HZ2MS(60)*1000000ULL){lockdisplay(display);
@@ -319,6 +373,7 @@
cam->view->draw(cam->view, screenb, nil);
compass.cam->view->draw(compass.cam->view, screenb, nil);
unlockdisplay(display);
+
nbsend(drawc, nil);
t0 += Δt;
}
@@ -341,9 +396,15 @@
{ static Quaternion orient = {1,0,0,0};Quaternion Δorient;
- Point3 p;
+ Point3 p, cp0, cp1, cv;
+ double cr;
+ int i, j;
- if((om.buttons^mctl->buttons) == 0){+ switch(opmode){+ case OMOrbit:
+ if((om.buttons^mctl->buttons) != 0)
+ break;
+
Δorient = orient;
qball(screen->r, om.xy, mctl->xy, &orient, nil);
Δorient = mulq(Δorient, invq(orient));
@@ -350,7 +411,7 @@
/* orbit camera around the center */
p = subpt3(cam->p, center);
- p = vcs2world(cam, Vecquat(mulq(mulq(Δorient, Quatvec(0, world2vcs(cam, p))), invq(Δorient))));
+ p = vcs2world(cam, qsandwichpt3(Δorient, world2vcs(cam, p)));
p.w = cam->p.w;
movecamera(cam, p);
aimcamera(cam, center);
@@ -357,10 +418,27 @@
/* same for the compass */
p = subpt3(compass.cam->p, center);
- p = vcs2world(compass.cam, Vecquat(mulq(mulq(Δorient, Quatvec(0, world2vcs(compass.cam, p))), invq(Δorient))));
+ p = vcs2world(compass.cam, qsandwichpt3(Δorient, world2vcs(compass.cam, p)));
p.w = compass.cam->p.w;
movecamera(compass.cam, p);
aimcamera(compass.cam, center);
+ break;
+ case OMSelect:
+ if((om.buttons^mctl->buttons) == 0)
+ break;
+
+ mctl->xy = subpt(mctl->xy, screen->r.min);
+ cp0 = viewport2world(cam, Pt3(mctl->xy.x, mctl->xy.y, 1, 1));
+ cp1 = viewport2world(cam, Pt3(mctl->xy.x, mctl->xy.y, 0, 1));
+ cv = viewport2world(cam, Pt3(mctl->xy.x+10, mctl->xy.y, 1, 1));
+ cr = vec3len(subpt3(cv, cp0)) * cam->clip.f/cam->clip.n;
+
+ for(i = 0; i < model->nprims; i++)
+ for(j = 0; j < model->prims[i].type+1; j++){+ if(ptincone(model->prims[i].v[j].p, cam->p, cp1, cr))
+ model->prims[i].v[j].c = Pt3(0.5,0.5,0,1);
+ }
+ break;
}
}
@@ -368,14 +446,14 @@
mmb(void)
{ enum {- TSNEAREST,
- TSBILINEAR,
+ TSNEAR,
+ TSBILI,
SP,
QUIT,
};
static char *items[] = {- [TSNEAREST] "use nearest sampler",
- [TSBILINEAR] "use bilinear sampler",
+ [TSNEAR] "use nearest sampler",
+ [TSBILI] "use bilinear sampler",
[SP] "",
[QUIT] "quit",
nil,
@@ -384,10 +462,10 @@
lockdisplay(display);
switch(menuhit(2, mctl, &menu, _screen)){- case TSNEAREST:
+ case TSNEAR:
tsampler = neartexsampler;
break;
- case TSBILINEAR:
+ case TSBILI:
tsampler = bilitexsampler;
break;
case QUIT:
@@ -519,48 +597,11 @@
{static int okdown;
- if(kdown & 1<<K↑)
- movecamera(cam, mulpt3(cam->bz, -0.1));
- if(kdown & 1<<K↓)
- movecamera(cam, mulpt3(cam->bz, 0.1));
- if(kdown & 1<<K←)
- movecamera(cam, mulpt3(cam->bx, -0.1));
- if(kdown & 1<<K→)
- movecamera(cam, mulpt3(cam->bx, 0.1));
- if(kdown & 1<<Krise)
- movecamera(cam, mulpt3(cam->by, 0.1));
- if(kdown & 1<<Kfall)
- movecamera(cam, mulpt3(cam->by, -0.1));
- if(kdown & 1<<KR↑){- rotatecamera(cam, cam->bx, 1*DEG);
- movecamera(compass.cam, qrotate(compass.cam->p, compass.cam->bx, 1*DEG));
- rotatecamera(compass.cam, compass.cam->bx, 1*DEG);
- }
- if(kdown & 1<<KR↓){- rotatecamera(cam, cam->bx, -1*DEG);
- movecamera(compass.cam, qrotate(compass.cam->p, compass.cam->bx, -1*DEG));
- rotatecamera(compass.cam, compass.cam->bx, -1*DEG);
- }
- if(kdown & 1<<KR←){- rotatecamera(cam, cam->by, 1*DEG);
- movecamera(compass.cam, qrotate(compass.cam->p, compass.cam->by, 1*DEG));
- rotatecamera(compass.cam, compass.cam->by, 1*DEG);
- }
- if(kdown & 1<<KR→){- rotatecamera(cam, cam->by, -1*DEG);
- movecamera(compass.cam, qrotate(compass.cam->p, compass.cam->by, -1*DEG));
- rotatecamera(compass.cam, compass.cam->by, -1*DEG);
- }
- if(kdown & 1<<KR↺){- rotatecamera(cam, cam->bz, 1*DEG);
- movecamera(compass.cam, qrotate(compass.cam->p, compass.cam->bz, 1*DEG));
- rotatecamera(compass.cam, compass.cam->bz, 1*DEG);
- }
- if(kdown & 1<<KR↻){- rotatecamera(cam, cam->bz, -1*DEG);
- movecamera(compass.cam, qrotate(compass.cam->p, compass.cam->bz, -1*DEG));
- rotatecamera(compass.cam, compass.cam->bz, -1*DEG);
- }
+ if((okdown & 1<<Kmodeorb) == 0 && (kdown & 1<<Kmodeorb) != 0)
+ opmode = OMOrbit;
+ else if((okdown & 1<<Kmodesel) == 0 && (kdown & 1<<Kmodesel) != 0)
+ opmode = OMSelect;
+
if(kdown & 1<<Kzoomin)
zoomin();
if(kdown & 1<<Kzoomout)