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[ADD] Adding GRRLIB_DrawCube

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[CHG] Adding a cube to the primitive/light demo code
This commit is contained in:
N0NameN0 2010-01-06 14:08:06 +00:00
parent d352bd354d
commit 899f7f1d47
3 changed files with 59 additions and 0 deletions
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54
GRRLIB/GRRLIB/GRRLIB_3D.c
View file

@ -320,3 +320,57 @@ void GRRLIB_DrawSphere(f32 r, int lats, int longs, bool filled) {
}
}
/**
* Draw a Cube (with normal).
* @param size Size of the cube edge.
* @param filled Wired or not.
*/
void GRRLIB_DrawCube(f32 size, bool filled)
{
static f32 n[6][3] =
{
{-1.0, 0.0, 0.0},
{0.0, 1.0, 0.0},
{1.0, 0.0, 0.0},
{0.0, -1.0, 0.0},
{0.0, 0.0, 1.0},
{0.0, 0.0, -1.0}
};
static int faces[6][4] =
{
{0, 1, 2, 3},
{3, 2, 6, 7},
{7, 6, 5, 4},
{4, 5, 1, 0},
{5, 6, 2, 1},
{7, 4, 0, 3}
};
f32 v[8][3];
int i;
v[0][0] = v[1][0] = v[2][0] = v[3][0] = -size / 2;
v[4][0] = v[5][0] = v[6][0] = v[7][0] = size / 2;
v[0][1] = v[1][1] = v[4][1] = v[5][1] = -size / 2;
v[2][1] = v[3][1] = v[6][1] = v[7][1] = size / 2;
v[0][2] = v[3][2] = v[4][2] = v[7][2] = -size / 2;
v[1][2] = v[2][2] = v[5][2] = v[6][2] = size / 2;
for (i = 5; i >= 0; i--) {
if(filled) GX_Begin(GX_QUADS, GX_VTXFMT0,4);
else GX_Begin(GX_LINESTRIP, GX_VTXFMT0,5);
GX_Position3f32(v[faces[i][0]][0],v[faces[i][0]][1],v[faces[i][0]][2] );
GX_Normal3f32(n[i][0], n[i][1], n[i][2]);
GX_Position3f32(v[faces[i][1]][0],v[faces[i][1]][1],v[faces[i][1]][2]);
GX_Normal3f32(n[i][0], n[i][1], n[i][2]);
GX_Position3f32(v[faces[i][2]][0],v[faces[i][2]][1],v[faces[i][2]][2]);
GX_Normal3f32(n[i][0], n[i][1], n[i][2]);
GX_Position3f32(v[faces[i][3]][0],v[faces[i][3]][1],v[faces[i][3]][2]);
GX_Normal3f32(n[i][0], n[i][1], n[i][2]);
if(!filled) {
GX_Position3f32(v[faces[i][0]][0],v[faces[i][0]][1],v[faces[i][0]][2]);
GX_Normal3f32(n[i][0], n[i][1], n[i][2]);
}
GX_End();
}
}

1
GRRLIB/GRRLIB/grrlib/GRRLIB__lib.h
View file

@ -152,6 +152,7 @@ void GRRLIB_LightOff(void);
void GRRLIB_LightSwitch(u8 id, u32 ambcol, u32 matcol, u8 colsrc);
void GRRLIB_DrawTorus(f32 r, f32 R, int nsides, int rings, bool filled);
void GRRLIB_DrawSphere(f32 r, int lats, int longs, bool filled);
void GRRLIB_DrawCube(f32 size, bool filled);
//------------------------------------------------------------------------------
// GRRLIB_Freetype.c - FreeType function for GRRLIB

4
examples/3D_LightDiffuse/source/main.c
View file

@ -53,6 +53,10 @@ int main() {
GRRLIB_DrawTorus(0.4f, 3.0f, 20, 50, 1);
GRRLIB_ObjectView(0,0,0, -a,a*2,-a*3, 1,1,1);
GRRLIB_DrawSphere(2.0f, 30, 30, 0);
GRRLIB_ObjectView(-4,-4,0, a,a*2,-a*3, 1,1,1);
GRRLIB_DrawCube(2.0f, 0);
GRRLIB_ObjectView(4,-4,0, a,-a*2,-a*3, 1,1,1);
GRRLIB_DrawCube(2.0f, 1);