mirror of
https://github.com/Fledge68/WiiFlow_Lite.git
synced 2024-11-01 09:05:06 +01:00
77 lines
2.1 KiB
C
77 lines
2.1 KiB
C
|
/****************************************************************************
|
||
|
|
* Copyright (C) 2012 Dimok
|
||
|
|
*
|
||
|
|
* This program is free software: you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License as published by
|
||
|
|
* the Free Software Foundation, either version 3 of the License, or
|
||
|
|
* (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
****************************************************************************/
|
||
|
|
#include <gccore.h>
|
||
|
|
|
||
|
|
void GX_Project(f32 mx, f32 my, f32 mz, Mtx mv, const f32 *projection,
|
||
|
|
const f32 *viewport, f32 *sx, f32 *sy, f32 *sz)
|
||
|
|
{
|
||
|
|
float x, y, z, w;
|
||
|
|
|
||
|
|
guVector vec = (guVector) { mx, my, mz };
|
||
|
|
guVector vecRes;
|
||
|
|
guVecMultiply(mv, &vec, &vecRes);
|
||
|
|
|
||
|
|
if(projection[0] == GX_PERSPECTIVE)
|
||
|
|
{
|
||
|
|
x = (vecRes.x * projection[1]) + (vecRes.z * projection[2]);
|
||
|
|
y = (vecRes.y * projection[3]) + (vecRes.z * projection[4]);
|
||
|
|
z = (vecRes.z * projection[5]) + projection[6];
|
||
|
|
w = -1.0f / vecRes.z;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
x = (vecRes.x * projection[1]) + projection[2];
|
||
|
|
y = (vecRes.y * projection[3]) + projection[4];
|
||
|
|
z = (vecRes.z * projection[5]) + projection[6];
|
||
|
|
w = 1.0f;
|
||
|
|
}
|
||
|
|
|
||
|
|
*sx = viewport[0] + (w * x * viewport[2] + viewport[2]) * 0.5f;
|
||
|
|
*sy = viewport[1] - (w * y * viewport[3] - viewport[3]) * 0.5f;
|
||
|
|
*sz = viewport[5] + (w * z * (viewport[5] - viewport[4]));
|
||
|
|
}
|
||
|
|
|
||
|
|
void GX_GetProjectionv( f32* ptr, Mtx44 p, u8 type)
|
||
|
|
{
|
||
|
|
ptr[0] = (f32)type;
|
||
|
|
ptr[1] = p[0][0];
|
||
|
|
ptr[3] = p[1][1];
|
||
|
|
ptr[5] = p[2][2];
|
||
|
|
ptr[6] = p[2][3];
|
||
|
|
|
||
|
|
if(type == GX_PERSPECTIVE)
|
||
|
|
{
|
||
|
|
ptr[2] = p[0][2];
|
||
|
|
ptr[4] = p[1][2];
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
ptr[2] = p[0][3];
|
||
|
|
ptr[4] = p[1][3];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void GX_GetViewportv( f32* ptr, GXRModeObj *vmode )
|
||
|
|
{
|
||
|
|
ptr[0] = 0.0f;
|
||
|
|
ptr[1] = 0.0f;
|
||
|
|
ptr[2] = vmode->fbWidth;
|
||
|
|
ptr[3] = vmode->efbHeight;
|
||
|
|
ptr[4] = 0.0f;
|
||
|
|
ptr[5] = 1.0f;
|
||
|
|
}
|