c3geometry: Removed projected vertices

Now uses a world aligned transform matrix. Changed randering code
to use it. Still use a projection matrix for now.

Signed-off-by: Michel Pollet <buserror@gmail.com>

diff --git a/examples/board_reprap/src/reprap_gl.c b/examples/board_reprap/src/reprap_gl.c
index b11f874..2ed140c 100644 (file)
--- a/examples/board_reprap/src/reprap_gl.c
+++ b/examples/board_reprap/src/reprap_gl.c
@@ -162,6 +162,7 @@ _gl_reshape_cb(int w, int h)
     _w  = w;
     _h = h;
 
+       glBindFramebuffer(GL_FRAMEBUFFER, 0);
     glViewport(0, 0, _w, _h);
     gl_offscreenReshape(_w, _h);
     glutPostRedisplay();
@@ -238,9 +239,9 @@ _gl_display_cb(void)                /* function called whenever redisplay needed */
 
        // Set up projection matrix
        glMatrixMode(GL_PROJECTION); // Select projection matrix
-       glLoadIdentity(); // Start with an identity matrix
+       c3mat4 p = perspective3D(50, (float)_w / (float)_h, z_min, z_max);
+       glLoadMatrixf(p.n);
 
-       gluPerspective(50, (float)_w / (float)_h, z_min, z_max);
 #if 0
        glCullFace(GL_BACK);
        glEnable(GL_CULL_FACE);
@@ -257,14 +258,6 @@ _gl_display_cb(void)               /* function called whenever redisplay needed */
        glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); // Type Of Blending To Use
 
        glMatrixMode(GL_MODELVIEW);
-       glLoadIdentity();
-
-       glMultMatrixf(c3context_view_get(c3)->cam.mtx.n);
-       glTranslatef(-c3context_view_get(c3)->cam.eye.n[VX],
-                       -c3context_view_get(c3)->cam.eye.n[VY],
-                       -c3context_view_get(c3)->cam.eye.n[VZ]);
-
-       dumpError("flush");
 
        c3context_draw(c3);
 
@@ -290,7 +283,6 @@ _gl_display_cb(void)                /* function called whenever redisplay needed */
        glScalef(1, -1, 1);
        glTranslatef(0, -1 * _h, 0);
        glMatrixMode(GL_MODELVIEW); // Select modelview matrix
-       glLoadIdentity(); // Start with an identity matrix
 
        if (hud)
                c3context_draw(hud);

diff --git a/examples/shared/libc3/src/c3geometry.c b/examples/shared/libc3/src/c3geometry.c
index a10eda5..7f607f6 100644 (file)
--- a/examples/shared/libc3/src/c3geometry.c
+++ b/examples/shared/libc3/src/c3geometry.c
@@ -49,7 +49,6 @@ _c3geometry_dispose(
                C3_DRIVER(g->object->context, geometry_dispose, g);
        str_free(g->name);
        c3vertex_array_free(&g->vertice);
-       c3vertex_array_free(&g->projected);
        c3tex_array_free(&g->textures);
        c3colorf_array_free(&g->colorf);
        free(g);
@@ -63,18 +62,17 @@ _c3geometry_project(
                c3mat4p m)
 {
        if (g->vertice.count) {
-               c3vertex_array_realloc(&g->projected, g->vertice.count);
-               g->projected.count = g->vertice.count;
                for (int vi = 0; vi < g->vertice.count; vi++) {
-                       g->projected.e[vi] = c3mat4_mulv3(m, g->vertice.e[vi]);
+                       c3vec3 v = c3mat4_mulv3(m, g->vertice.e[vi]);
                        if (vi == 0)
-                               g->bbox.min = g->bbox.max = g->projected.e[vi];
+                               g->bbox.min = g->bbox.max = v;
                        else {
-                               g->bbox.max = c3vec3_min(g->bbox.min, g->projected.e[vi]);
-                               g->bbox.max = c3vec3_max(g->bbox.max, g->projected.e[vi]);
+                               g->bbox.max = c3vec3_min(g->bbox.min, v);
+                               g->bbox.max = c3vec3_max(g->bbox.max, v);
                        }
                }
-       }
+       } else
+               g->bbox.min = g->bbox.max = c3vec3f(0,0,0);
 
        if (g->object && g->object->context)
                C3_DRIVER(g->object->context, geometry_project, g, m);

diff --git a/examples/shared/libc3/src/c3geometry.h b/examples/shared/libc3/src/c3geometry.h
index e7d0183..68831a8 100644 (file)
--- a/examples/shared/libc3/src/c3geometry.h
+++ b/examples/shared/libc3/src/c3geometry.h
@@ -68,8 +68,8 @@ enum {
  * real format of the vertices. like GL_LINES etc
  */
 typedef struct c3geometry_type_t {
-       uint32_t type;
-       c3apiobject_t subtype;
+       uint32_t type;                  // C3_RAW_TYPE etc
+       c3apiobject_t subtype;  // GL_LINES etc
 } c3geometry_type_t;
 
 /*!
@@ -79,23 +79,23 @@ typedef struct c3geometry_type_t {
  * c3object that has the projection
  */
 typedef struct c3geometry_t {
-       c3geometry_type_t       type;   // C3_TRIANGLE_TYPE, GL_LINES etc
+       c3geometry_type_t       type;   // geometry type
        int                                     dirty : 1,
                                                custom : 1;             // has a custom driver
        str_p                           name;   // optional
+       c3apiobject_t           bid;    // buffer id for opengl
+
        c3material_t            mat;
-       struct c3object_t * object;
+       struct c3object_t * object;     // parent object
        const struct c3driver_geometry_t ** driver;
 
+       c3bbox_t                        bbox;   // world aligned bounding box
        c3vertex_array_t        vertice;
-       c3tex_array_t           textures;
-       c3colorf_array_t        colorf;
-       c3vertex_array_t        normals;
-       c3indices_array_t       indices;
-
-       // projected version of the vertice
-       c3vertex_array_t        projected;
-       c3bbox_t                        bbox;
+       c3tex_array_t           textures;       // optional: texture coordinates
+       c3vertex_array_t        normals;        // optional: vertex normals
+       c3indices_array_t       indices;        // optional: vertex indices
+       // could go ?
+       c3colorf_array_t        colorf;         // optional: vertex colors
 
        /*
         * Some shared attributes

diff --git a/examples/shared/libc3/src/c3object.c b/examples/shared/libc3/src/c3object.c
index 04d17f1..1243e0d 100644 (file)
--- a/examples/shared/libc3/src/c3object.c
+++ b/examples/shared/libc3/src/c3object.c
@@ -81,21 +81,16 @@ _c3object_project(
                const c3driver_object_t * d,
                c3mat4p m)
 {
+       o->world = *m;
        if (!o->dirty)
                return;
-
-//     c3mat4 identity = identity3D();
        c3mat4 p = *m;
        for (int pi = 0; pi < o->transform.count; pi++)
                p = c3mat4_mul(&p, &o->transform.e[pi]->matrix);
-//     bool is_identity = c3mat4_equal(m, &identity);
        o->world = p;
 
        for (int gi = 0; gi < o->geometry.count; gi++) {
                c3geometry_p g = o->geometry.e[gi];
-               c3vertex_array_clear(&g->projected);
-
-               g->bbox.min = g->bbox.max = c3vec3f(0,0,0);
                c3geometry_project(g, &p);
        }
        for (int oi = 0; oi < o->objects.count; oi++)

diff --git a/examples/shared/libc3/srcgl/c3gl.c b/examples/shared/libc3/srcgl/c3gl.c
index 889633f..513a79b 100644 (file)
--- a/examples/shared/libc3/srcgl/c3gl.c
+++ b/examples/shared/libc3/srcgl/c3gl.c
@@ -237,10 +237,15 @@ _c3_geometry_draw(
        glColor4fv(g->mat.color.n);
        dumpError("glColor");
 //     glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, g->mat.color.n);
-       glVertexPointer(3, GL_FLOAT, 0,
-                       g->projected.count ? g->projected.e : g->vertice.e);
+       glVertexPointer(3, GL_FLOAT, 0, g->vertice.e);
        glEnableClientState(GL_VERTEX_ARRAY);
        dumpError("GL_VERTEX_ARRAY");
+
+       c3mat4 eye = c3mat4_mul(
+                       &g->object->world,
+                       &c3context_view_get(g->object->context)->cam.mtx);
+       glLoadMatrixf(eye.n);
+
        glDisable(GL_TEXTURE_2D);
        if (g->mat.texture) {
                GLuint mode = g->mat.texture->normalize ?
@@ -265,15 +270,11 @@ _c3_geometry_draw(
                glEnableClientState(GL_NORMAL_ARRAY);
        }
        if (g->indices.count) {
-       //      GLCHECK(glIndexPointer(GL_UNSIGNED_SHORT, 0, g->indices.e));
-       //      glEnableClientState(GL_INDEX_ARRAY);
                GLCHECK(glDrawElements((GLuint)g->type.subtype,
                                g->indices.count, GL_UNSIGNED_SHORT,
                                g->indices.e));
-       //      glDisableClientState(GL_INDEX_ARRAY);
        } else {
-               glDrawArrays((GLuint)g->type.subtype, 0,
-                       g->projected.count ? g->projected.count : g->vertice.count);
+               glDrawArrays((GLuint)g->type.subtype, 0, g->vertice.count);
        }
        glDisableClientState(GL_VERTEX_ARRAY);
        glDisableClientState(GL_TEXTURE_COORD_ARRAY);