diff options
Diffstat (limited to 'src/jake2/util')
| -rw-r--r-- | src/jake2/util/Math3D.java | 66 |
1 files changed, 32 insertions, 34 deletions
diff --git a/src/jake2/util/Math3D.java b/src/jake2/util/Math3D.java index a434a05..e949f07 100644 --- a/src/jake2/util/Math3D.java +++ b/src/jake2/util/Math3D.java @@ -19,7 +19,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ // Created on 09.12.2003 by RST. -// $Id: Math3D.java,v 1.4 2004-07-08 20:56:54 hzi Exp $ +// $Id: Math3D.java,v 1.5 2004-07-19 19:32:12 hzi Exp $ package jake2.util; @@ -315,21 +315,18 @@ public class Math3D extends Lib { } public static void ProjectPointOnPlane(float[] dst, float[] p, float[] normal) { - float d; - float[] n = { 0.0f, 0.0f, 0.0f }; - float inv_denom; - inv_denom = 1.0F / Math3D.DotProduct(normal, normal); + float inv_denom = 1.0F / Math3D.DotProduct(normal, normal); - d = Math3D.DotProduct(normal, p) * inv_denom; + float d = Math3D.DotProduct(normal, p) * inv_denom; - n[0] = normal[0] * inv_denom; - n[1] = normal[1] * inv_denom; - n[2] = normal[2] * inv_denom; + dst[0] = normal[0] * inv_denom; + dst[1] = normal[1] * inv_denom; + dst[2] = normal[2] * inv_denom; - dst[0] = p[0] - d * n[0]; - dst[1] = p[1] - d * n[1]; - dst[2] = p[2] - d * n[2]; + dst[0] = p[0] - d * dst[0]; + dst[1] = p[1] - d * dst[1]; + dst[2] = p[2] - d * dst[2]; } /** assumes "src" is normalized */ @@ -361,7 +358,6 @@ public class Math3D extends Lib { stellt fest, auf welcher Seite sich die Kiste befindet, wenn die Ebene durch Entfernung und Senkrechten-Normale gegeben ist. erste Version mit vec3_t... */ - public static final int BoxOnPlaneSide(float emins[], float emaxs[], cplane_t p) { assert (emins.length == 3 && emaxs.length == 3) : "vec3_t bug"; @@ -427,7 +423,7 @@ public class Math3D extends Lib { assert (sides != 0) : "BoxOnPlaneSide(): sides == 0 bug"; return sides; - } + } // this is the slow, general version private static float corners[][] = new float[2][3]; @@ -456,34 +452,36 @@ public class Math3D extends Lib { } public static void AngleVectors(float[] angles, float[] forward, float[] right, float[] up) { - float angle; - float sr, sp, sy, cr, cp, cy; - cr = 2.0f * piratio; - angle = (float) (angles[Defines.YAW] * (cr)); - sy = (float) Math.sin(angle); - cy = (float) Math.cos(angle); + float cr = 2.0f * piratio; + float angle = (float) (angles[Defines.YAW] * (cr)); + float sy = (float) Math.sin(angle); + float cy = (float) Math.cos(angle); angle = (float) (angles[Defines.PITCH] * (cr)); - sp = (float) Math.sin(angle); - cp = (float) Math.cos(angle); - angle = (float) (angles[Defines.ROLL] * (cr)); - sr = (float) Math.sin(angle); - cr = (float) Math.cos(angle); + float sp = (float) Math.sin(angle); + float cp = (float) Math.cos(angle); if (forward != null) { forward[0] = cp * cy; forward[1] = cp * sy; forward[2] = -sp; } - if (right != null) { - right[0] = (-sr * sp * cy + cr * sy); - right[1] = (-sr * sp * sy + -cr * cy); - right[2] = -sr * cp; - } - if (up != null) { - up[0] = (cr * sp * cy + -sr * -sy); - up[1] = (cr * sp * sy + -sr * cy); - up[2] = cr * cp; + + if (right != null || up != null) { + angle = (float) (angles[Defines.ROLL] * (cr)); + float sr = (float) Math.sin(angle); + cr = (float) Math.cos(angle); + + if (right != null) { + right[0] = (-sr * sp * cy + cr * sy); + right[1] = (-sr * sp * sy + -cr * cy); + right[2] = -sr * cp; + } + if (up != null) { + up[0] = (cr * sp * cy + sr * sy); + up[1] = (cr * sp * sy + -sr * cy); + up[2] = cr * cp; + } } } |