X-Git-Url: http://de.git.xonotic.org/?p=xonotic%2Fdarkplaces.git;a=blobdiff_plain;f=model_alias.c;fp=model_alias.c;h=ddcd849e63e487a838e3dcf4c836a0cbc5261567;hp=981188ea714dd1d16318ac652f6ed2693ed5a500;hb=a86f2139beecdb548c90b37abab5132b985833c6;hpb=17f95319455e01172cfdd806c8b7bc97064203fc

diff --git a/model_alias.c b/model_alias.c
index 981188ea..ddcd849e 100644
--- a/model_alias.c
+++ b/model_alias.c
@@ -62,6 +62,104 @@ void *Mod_Skeletal_AnimateVertices_AllocBuffers(size_t nbytes)
 	return Mod_Skeletal_AnimateVertices_bonepose;
 }
 
+void Mod_Skeletal_BuildTransforms(const dp_model_t * RESTRICT model, const frameblend_t * RESTRICT frameblend, const skeleton_t *skeleton, float * RESTRICT bonepose, float * RESTRICT boneposerelative)
+{
+	int i, blends;
+	float m[12];
+
+	if (!bonepose)
+		bonepose = (float * RESTRICT) Mod_Skeletal_AnimateVertices_AllocBuffers(sizeof(float[12]) * model->num_bones);
+		
+	if (skeleton && !skeleton->relativetransforms)
+		skeleton = NULL;
+
+	// interpolate matrices
+	if (skeleton)
+	{
+		for (i = 0;i < model->num_bones;i++)
+		{
+			Matrix4x4_ToArray12FloatD3D(&skeleton->relativetransforms[i], m);
+			if (model->data_bones[i].parent >= 0)
+				R_ConcatTransforms(bonepose + model->data_bones[i].parent * 12, m, bonepose + i * 12);
+			else
+				memcpy(bonepose + i * 12, m, sizeof(m));
+
+			// create a relative deformation matrix to describe displacement
+			// from the base mesh, which is used by the actual weighting
+			R_ConcatTransforms(bonepose + i * 12, model->data_baseboneposeinverse + i * 12, boneposerelative + i * 12);
+		}
+	}
+	else
+	{
+		for (i = 0;i < model->num_bones;i++)
+		{
+			// blend by transform each quaternion/translation into a dual-quaternion first, then blending
+			const short * RESTRICT pose7s = model->data_poses7s + 7 * (frameblend[0].subframe * model->num_bones + i);
+			float lerp = frameblend[0].lerp,
+				tx = pose7s[0], ty = pose7s[1], tz = pose7s[2],
+				rx = pose7s[3] * lerp,
+				ry = pose7s[4] * lerp,
+				rz = pose7s[5] * lerp,
+				rw = pose7s[6] * lerp,
+				dx = tx*rw + ty*rz - tz*ry,
+				dy = -tx*rz + ty*rw + tz*rx,
+				dz = tx*ry - ty*rx + tz*rw,
+				dw = -tx*rx - ty*ry - tz*rz,
+				scale, sx, sy, sz, sw;
+			for (blends = 1;blends < MAX_FRAMEBLENDS && frameblend[blends].lerp > 0;blends++)
+			{
+				const short * RESTRICT pose7s = model->data_poses7s + 7 * (frameblend[blends].subframe * model->num_bones + i);
+				float lerp = frameblend[blends].lerp,
+					tx = pose7s[0], ty = pose7s[1], tz = pose7s[2],
+					qx = pose7s[3], qy = pose7s[4], qz = pose7s[5], qw = pose7s[6];
+				if(rx*qx + ry*qy + rz*qz + rw*qw < 0) lerp = -lerp;
+				qx *= lerp;
+				qy *= lerp;
+				qz *= lerp;
+				qw *= lerp;
+				rx += qx;
+				ry += qy;
+				rz += qz;
+				rw += qw;
+				dx += tx*qw + ty*qz - tz*qy;
+				dy += -tx*qz + ty*qw + tz*qx;
+				dz += tx*qy - ty*qx + tz*qw;
+				dw += -tx*qx - ty*qy - tz*qz;
+			}
+			// generate a matrix from the dual-quaternion, implicitly normalizing it in the process
+			scale = 1.0f / (rx*rx + ry*ry + rz*rz + rw*rw);
+			sx = rx * scale;
+			sy = ry * scale;
+			sz = rz * scale;
+			sw = rw * scale;
+			m[0] = sw*rw + sx*rx - sy*ry - sz*rz;
+			m[1] = 2*(sx*ry - sw*rz);
+			m[2] = 2*(sx*rz + sw*ry);
+			m[3] = model->num_posescale*(dx*sw - dy*sz + dz*sy - dw*sx);
+			m[4] = 2*(sx*ry + sw*rz);
+			m[5] = sw*rw + sy*ry - sx*rx - sz*rz;
+			m[6] = 2*(sy*rz - sw*rx);
+			m[7] = model->num_posescale*(dx*sz + dy*sw - dz*sx - dw*sy);
+			m[8] = 2*(sx*rz - sw*ry);
+			m[9] = 2*(sy*rz + sw*rx);
+			m[10] = sw*rw + sz*rz - sx*rx - sy*ry;
+			m[11] = model->num_posescale*(dy*sx + dz*sw - dx*sy - dw*sz);
+			if (i == r_skeletal_debugbone.integer)
+				m[r_skeletal_debugbonecomponent.integer % 12] += r_skeletal_debugbonevalue.value;
+			m[3] *= r_skeletal_debugtranslatex.value;
+			m[7] *= r_skeletal_debugtranslatey.value;
+			m[11] *= r_skeletal_debugtranslatez.value;
+			if (model->data_bones[i].parent >= 0)
+				R_ConcatTransforms(bonepose + model->data_bones[i].parent * 12, m, bonepose + i * 12);
+			else
+				memcpy(bonepose + i * 12, m, sizeof(m));
+			// create a relative deformation matrix to describe displacement
+			// from the base mesh, which is used by the actual weighting
+			R_ConcatTransforms(bonepose + i * 12, model->data_baseboneposeinverse + i * 12, boneposerelative + i * 12);
+		}
+	}
+}
+
 static void Mod_Skeletal_AnimateVertices(const dp_model_t * RESTRICT model, const frameblend_t * RESTRICT frameblend, const skeleton_t *skeleton, float * RESTRICT vertex3f, float * RESTRICT normal3f, float * RESTRICT svector3f, float * RESTRICT tvector3f)
 {